Using and Configuring Features Version 3.3
This chapter describes the WAN Restoral configuration and operational
commands. It includes the following sections:
The WAN Restoral configuration commands allow you to create or modify the
WAN Restoral interface configuration. This section summarizes and
explains the WAN Restoral configuration commands.
Table 8 lists the WAN Restoral configuration commands and their
function. Enter these commands at the WRS Config>
prompt. To access WRS Config>, enter feature
wrs at the Config> prompt.
Table 8. WAN Restoral Configuration Commands Summary
| Command
| Function
|
| ? (Help)
| Displays all the commands available for this command level or lists the
options for specific commands (if available). See "Getting Help".
|
| Add
| Adds a mapping of primary-to-secondary (for WAN Restoral) or
primary-to-alternate (for WAN Reroute).
|
| Disable
| Disables WRS, an individual secondary-circuit mapping, or
alternate-circuit mapping.
|
| Enable
| Enables WRS, an individual secondary-circuit mapping, or
alternate-circuit mapping.
|
| List
| Displays the current Restoral configuration.
|
| Remove
| Removes a primary to secondary mapping or a primary to alternate
mapping created by add.
|
| Set
| Sets the values for the stabilization, route-stabilization, and
time-of-day-revert-back timers.
|
| Exit
| Returns you to the previous command level. See "Exiting a Lower Level Environment".
|
Use the add command to identify a secondary or an alternate
dial-circuit or leased link interface for a primary serial link.
Syntax:
- add
- alternate-circuit
-
- secondary-circuit
- alternate-circuit
- The add alternate-circuit command binds an alternate interface
to a primary interface for WAN Reroute purposes. You can assign
multiple primaries to a single alternate interface. The alternate link
type need not be the same as the primary link type (for example, the alternate
link type can be a PPP dial circuit and the primary link type can be a Frame
Relay leased line).
Example:
WRS Config>add alt
Alternate interface number [0]? 6
Primary interface number [0]? 1
- Alternate interface number
- This is the interface number previously assigned to the alternate
interface. Any LAN interface, PPP, Frame Relay, or X.25 serial
interface, or a PPP or Frame Relay dial circuit is an eligible alternate
interface. The default is 0.
- Primary interface number
- This is the interface number of the primary interface previously assigned
when the device was added. A primary interface can be any previously
defined LAN interface, PPP, Frame Relay, or X.25 serial interface, or a
PPP or Frame Relay dial circuit. The default is 0.
- secondary-circuit
- The add secondary-circuit command binds a secondary interface
to a primary interface for WAN Restoral purposes. Both interfaces must
have previously been configured. You can only assign one secondary
interface to a primary and vice-versa.
Example:
WRS Config>add secondary-circuit
Secondary interface number [0]? 4
Primary interface number [0]? 1
- Secondary interface number
- This is the dial circuit interface number previously assigned to the
secondary interface when the device was added. Any PPP dial circuit or
Multilink PPP interface can be a secondary interface. The default is
0.
- Primary interface number
- This is the interface number of the primary interface previously assigned
when the device was added. A primary interface can be any previously
defined leased-line running PPP. The default is 0.
Use the disable command to disable the WAN Restoral function, or
to disable a primary/secondary pairing for WAN Restoral, or to disable a
primary/alternate pairing for WAN Reroute, or to disable Dial-on-overflow for
a primary/alternate pairing.
Syntax:
- disable
- alternate-circuit
-
- dial-on-overflow
-
- secondary-circuit
-
- wrs
- alternate-circuit interface#
- Disables the primary/alternate pairing for WAN Reroute.
Example:
WRS Config> disable alternate-circuit
Alternate interface number [0]? 6
- Alternate interface number
- This is the number of the alternate interface previously configured with
the add alternate-circuit command. The default is 0.
- dial-on-overflow alt-intfc#
- Disables dial-on-overflow for all primary/alternate pairings using a
specified alternate.
Example:
WRS Config> disable dial-on-overflow
alternate interface number [0]? 6
- Alternate interface number
- This is the number of the alternate interface previously configured with
the add alternate-circuit command. The default is 0.
- secondary-circuit interface#
- Disables the restoral of a particular primary interface by its associated
secondary interface until the next enable secondary-circuit command
at the WRS console. Both interfaces must have been previously
configured and bound together in the WRS configuration.
Example:
WRS Config> disable secondary-circuit
Secondary interface number [0]? 3
- Secondary interface number
- This is the number of the secondary interface previously configured with
the add secondary-circuit command. The default is 0.
- wrs
- Disables the WAN Restoral feature globally on the router. This
means that WAN Reroute and Dial-on-overflow are also disabled.
Use the enable command to enable the WAN Restoral function, to
enable a primary/secondary pairing for WAN Restoral, to enabled a
primary/alternate pairing for WAN Reroute, or to enable dial-on-overflow for a
primary/alternate pairing.
Syntax:
- enable
- alternate-circuit
-
- dial-on-overflow
-
- secondary-circuit
-
- wrs
- alternate-circuit interface#
- Enables an alternate circuit
Example:
WRS Config>enable alternate-circuit
Alternate interface number [0]? 6
- Alternate interface number
- This is the number of the alternate interface previously configured with
the add alternate-circuit command. The default is 0.
- dial-on-overflow
- Enables dial-on-overflow and allows you to set parameters that control how
dial-on-overflow works.
Example:
WRS>enable dial-on-overflow
For dial-on-overflow, only IP traffic can overflow to the alternate
interface.
Primary interface number ]0]? 1
add-threshold (1-100% utilization) [90]?
drop-threshold(0-99% utilization) [60]?
bandwidth test interval(10-200 seconds) [15]?
minimum time to keep the alternate up (20-21600 sec.) [300]?
Dial-on overflow is enabled.
Remember to configure the primary interface's line speed!
- Primary interface number
- This is the interface number of the primary interface for which you are
enabling dial-on-overflow. The default is 0.
- add-threshold
- Determines when an alternate interface will be brought up for additional
bandwidth. This value must expressed as a percentage of the primary
interface's configured line speed. The default is 90%.
- drop-threshold
- Determines when an alternate interface is no longer needed for additional
bandwidth. This value must expressed as a percentage of the primary
interface's configured line speed. The default is 60%.
- bandwidth monitoring interval
- Determines how often the primary interface's bandwidth is monitored
for the add-threshold and drop-threshold. The default
is 15 seconds.
- Minimum time to keep alternate up
- This time period needs to include enough time for the routers to establish
the new route when IP traffic on the local router is rerouted to the alternate
interface. The default is 5 minutes.
- secondary-circuit interface#
- Enables the restoral of a primary link by the indicated secondary
link.
Example:
WRS Config>enable secondary-circuit
Secondary interface number [0]? 3
- Secondary interface number
- This is the number of the secondary interface previously configured with
the add secondary-circuit command. The default is 0.
- wrs
- Enables the function of the WAN Restoral feature on the router.
This means that if WAN Reroute and Dial-on-overflow are configured they are
also enabled.
Use the list command to display global configuration information
for the feature and display configuration information for WAN Restoral
primary-secondary pairs, WAN Reroute primary-alternate pairs, and
Dial-on-Overflow.
Syntax:
- list
-
Example:
WRS Config>list all
WAN Restoral is enabled.
Default Stabilization Time: 0 seconds
Default First Stabilization Time: 0 seconds
Secondary
Primary Interface Secondary Interface Enabled
----------------------- ----------------------- --------
4 - WAN PPP 7 - PPP Dial Circuit No
Alt. 1st Subseq TOD Revert Back Stab
Primary Interface Alternate Interface Enabled Stab Stab Start Stop
----------------- ---------------------- ------- ---- ---- ------- ------- ----
1 - WAN Frame Re 2 - WAN Frame Relay Yes dflt dflt Not Set Not Set 15
Dial-on-overflow is enabled.
Primary add- drop- test minimum
Interface threshold threshold interval alt up time
--------- --------- --------- --------- -----------
1 29% 20% 15 sec. 300 sec.
Use the remove command to delete the mapping of an alternate
interface or secondary (backup) interface to the primary interface.
Syntax:
- remove
- alternate-circuit
-
- secondary-circuit
- alternate-circuit alternate-interface# primary-interface#
- Removes the mapping of a alternate (backup) interface to the primary
interface for WAN Reroute. Both interfaces must have been previously
assigned and bound together using the add alternate-circuit
command.
- Alternate-interface#
- This is the number of the alternate interface previously configured with
the add alternate-circuit command. The default is 0.
- Primary-interface#
- This is the interface number of the primary interface previously bound to
the alternate being removed. The default is 0.
Example:
WRS Config> remove alternate-circuit
Alternate interface number [0]? 3
Primary interface number [0]? 1
- secondary-circuit secondary-interface# primary-interface#
- Removes the mapping of a secondary (backup) interface to the primary
interface for WAN Restoral. Both interfaces must have been previously
assigned and bound together using the add secondary-circuit
command.
- Secondary-interface#
- This is the number of the secondary interface previously configured with
the add secondary-circuit command. The default is 0.
- Primary-interface#
- This is the interface number of the primary interface previously bound to
the secondary being removed. The default is 0.
Example:
WRS Config> remove secondary-circuit
Secondary interface number [0]? 3
Primary interface number [0]? 1
Use the set command to set the parameters for WAN
Reroute.
Syntax:
- set ?
- default
-
- first-stabilization
-
- routing-stabilization
-
- stabilization
-
- start-time-of-day-revert-back
-
- stop-time-of-day-revert-back
- default
- Use the set default command to set the defaults to be used by
links that do not have configured stabilization and first-stabilization
times.
- first-stabilization
- Sets the default first-stabilization value to be used for links for which
a first-stabilization time was not configured.
WRS Config>set default first
Default first primary stabilization time (0 - 3600 seconds) [0]? 20
- stabilization
- Sets the default stabilization value to be used for links for which a
stabilization time was not configured.
WRS Config>set default stab
Default primary stabilization time (0 - 3600 seconds) [0]? 30
- first-stabilization
- Sets the number of seconds at router initialization before routing for
this primary link is switched to the alternate link if the primary link is not
up.
Example:
WRS Config>set first
Primary interface number [0]? 1
First primary stabilization time (0 - 3600 seconds -1 = default) [-1]?
- Primary interface number
- This is the primary interface number of the primary interface for which
you are setting first-stabilization. The default is 0.
- First primary stabilization time
- The stabilization time for this primary interface. The default is
1.
- routing-stabilization
- Sets the routing-stabilization value. This parameter defines the
number of seconds that both the primary link and the alternate link remain up
after the primary link has been found to be up and the stabilization timer, if
any, has expired. The routing-stabilization time is provided so that
routing protocols such as OSPF or RIP have enough time to recognize the
availability of the new route. Without the routing-stabilization timer,
traffic can be interrupted for several seconds while the alternate route has
been disabled and the primary route has not yet been discovered.
If the alternate link was up prior to the reroute, the alternate link
remains up and the routing-stabilization timer is ignored. If the
alternate link went down prior to the reroute or during the reroute, the
alternate link remains down and the routing-stabilization timer and the
stabilization timer are both ignored.
WRS Config>set routing-stabilization
Primary interface number [0]? 1
Routing stabilization timer (0 - 3600 seconds) [0]?
- Primary interface number
-
Valid Values: 0 to the number of interfaces configured on
the router
Default Value: 0
- Routing-stabilization timer
-
Valid Values: 1 to 3600 seconds
Default Value: 0
- stabilization
- Sets the number of seconds required after the primary link is first
detected to be up before the process of re-initializing routing on the primary
link begins. When the stabilization timer expires, the alternate link
will be brought down unless the routing-stabilization timer has been
configured. The routing-stabilization timer will start as soon as the
stabilization timer expires and will keep both the primary and the alternate
links up long enough to maintain the traffic on the alternate link while the
routing protocols such as OSPF and RIP reestablish the route over the primary
link.
Example:
WRS Config>set first
Primary interface number [0]? 1
Primary stabilization time (0 - 3600 seconds -1 = default) [-1]?
- Primary interface number
- This is the primary interface number of the primary interface for which
you are setting stabilization. The default is 0.
- Primary stabilization time
- The stabilization time for the primary interface. The default is
1.
- start-time-of-day-revert-back
- The earliest time of the day the router can switch back to the primary
route. The router can revert back to the primary any time between the
start-time-of-day-revert-back time and the stop-time-of-day-revert-back
time. Reverting back to the primary will only occur if the primary is
up and the stabilization parameters are met. The default is 0.
Example:
WRS Config>set start
Primary interface number [0]? 1
Time-of-Day revert back window start (1 - 24 hours, 0 = not configured) [0] 3
Start time-of-day revert back configured. Remember to configure stop time-of-day
- Primary interface number
- This is the primary interface number of the primary interface for which
you are setting first-stabilization. The default is 0.
- Time-of-day-revert-back-window start
- This time marks the beginning time for the revert back window. The
router can revert back to the primary interface any time between the
start-time-of-day-revert-back time and the stop-time-of-day-revert-back
time. Reverting back to the primary interface will only occur if the
primary interface is up and the stabilization parameters are met. The
default is 1.
- stop-time-of-day-revert-back
- This time marks the ending time for the revert back window. The
router can revert back to the primary interface any time between the
start-time-of-day-revert-back time and the stop-time-of-day-revert-back
time. Reverting back to the primary interface will only occur if the
primary interface is up and the stabilization parameters are met. The
default is 1.
Example:
WRS Config>set stop
Primary interface number [0]? 1
Time-of-Day revert back window stop (1 - 24 hours, 0 = not configured) [0]?5
- Primary interface number
- This is the primary interface number of the primary interface for which
you are setting first-stabilization. The default is 0.
- Time-of-day-revert-back-window stop
- This time marks the ending time for the revert back window. The
router can revert back to the primary interface any time between the
start-time-of-day-revert-back time and the stop-time-of-day-revert-back
time. Reverting back to the primary interface will only occur if the
primary interface is up and the stabilization parameters are met. The
default is 1.
To access the WAN Restoral interface monitoring process, enter the
following command at the GWCON (+) prompt:
+ feature wrs
The WAN Restoral (WRS) monitoring commands allow you to monitor the state
of WAN Restoral primary-secondary pairs, WAN Reroute primary-alternate pairs,
and Dial-on-Overflow. Any modifications to the operational state of WAN
Restoral, WAN Reroute, and Dial-on-Overflow made through the monitoring
interface are not maintained across router restarts.
Access the WRS prompt by entering feature wrs at the
GWCON (+) prompt. Table 9 lists the WRS commands and their functions, and the following
sections explain the commands.
Table 9. WAN Restoral Monitoring Commands
| Command
| Function
|
| ? (Help)
| Displays all the commands available for this command level or lists the
options for specific commands (if available). See "Getting Help".
|
| Clear
| Clears the monitoring statistics displayed using the list
command.
|
| Disable
| Disables the WRS, or an individual secondary, or alternate, or
dial-on-overflow.
|
| Enable
| Enables the WRS, or an individual secondary, or alternate, or
dial-on-overflow.
|
| List
| Displays the monitoring information on one or all alternate or
secondary circuits.
|
| Set
| Sets the values for the stabilization, route-stabilization, and
time-of-day-revert-back-timers.
|
| Exit
| Returns you to the previous command level. See "Exiting a Lower Level Environment".
|
Use the clear command to clear WAN Restoral, WAN Reroute, and
dial-on-overflow statistics that are displayed using the list
command.
Syntax:
- clear
-
| Note: | This command clears Longest restoral period, but does not clear
the Most recent restoral period. For the screen display,
refer to the example in the list command.
|
Use the disable command to disable the WAN Restoral feature
completely, disable the restoral of a particular primary interface by its
associated secondary interface, disable an alternate interface or disable
dial-on-overflow.
Syntax:
- disable
- alternate-circuit
-
- dial-on-overflow
-
- secondary-circuit
-
- wrs
- alternate-circuit
- Disables a primary/alternate pairing for WAN Reroute. There can be
multiple pairings using the same alternate. This command disables all
the pairings using the specified alternate-circuit.
Example:
WRS>disable alternate-circuit
Alternate circuit number [0]? 6
- Alternate circuit number
- This is the number of the alternate circuit. The default is
0.
- dial-on-overflow
- Disables dial-on-overflow for the specified primary/alternate pairing,
without changing the enabled/disabled state of WAN Reroute for that
pairing. If dial-on-overflow is actively routing, it is terminated at
the expiration of the next monitor interval.
- secondary-circuit
- Disables the restoral of a particular primary interface by its associated
secondary interface until the next restart, reload, or
enable secondary-circuit command. Both interfaces must have
been previously configured and bound together in the WRS configuration.
Normally, in talk 5 (GWCON), the disable command
causes the interface to be inactive and stay inactive. For WAN Restoral
secondary, however, this is not the case. The disable
command applied to the secondary interface does not disable the interface
itself. It disables only the current call (that is, causes any active
call to be disconnected.) To disable use of the secondary circuit, you
need to disable secondary-circuit at the WAN Restoral monitoring
prompt and disable the secondary interface at the top level GWCON
prompt.Example:
WRS>disable secondary-circuit
Secondary interface number [0]? 3
- Secondary interface number
- This is the number of the secondary interface previously configured with
the add secondary-circuit command. The default is 0.
- wrs
- Disabling WRS disables WAN Restoral, WAN Reroute, and Dial-on-overflow on
the router until the next restart, reload, or
enable WRS command.
Use the enable command to enable the WAN Restoral interface,
enable the restoral of a primary link by a secondary circuit, enable an
alternate circuit, or enable dial-on-overflow.
Syntax:
- enable
- alternate-circuit
-
- dial-on-overflow
-
- secondary-circuit
-
- wrs
- alternate-circuit
- Enables the primary/alternate pairings for WAN Reroute for all pairings
using the specified alternate.
Example:
WRS> enable alternate-circuit
Alternate circuit number [0]? 3
- Alternate circuit number
- This is the interface number of the alternate circuit. The default
is 0.
- dial-on-overflow
- Enables dial-on-overflow and allows you to set parameters that control
dial-on-overflow. Optionally, allows you to cause the IP protocol to be
switched immediately to the alternate, as if the add threshold had been
crossed.
Example:
WRS> dial-on-overflow
For dial-on-overflow, only IP traffic can overflow to the alternate interface.
Primary interface number [0]? 1
add-threshold (1-100% utilization) [90]?
drop-threshold(0-99% utilization) [60]?
bandwidth test interval(10-200 seconds) [15]?
minimum time to keep the alternate up (20-21600 sec.) [300]?
Dial-on overflow is enabled.
Remember to configure the primary interface's line speed!
Do you want to switch IP traffic to the alternate now?(Yes or [No]):
WRS>
- secondary-circuit
- Enables the restoral of a primary link by the indicated secondary
link.
Example:
WRS> enable secondary-circuit
Secondary interface number [0]? 3
- Secondary interface number
- This is the number of the secondary interface previously configured with
the add secondary-circuit command. The default is 0.
- wrs
- Enables the function of the WAN Restoral feature on the router.
This feature needs to be enabled in order to do WAN Restoral, WAN Reroute, or
Dial-on-overflow.
Use the set command to set the parameters for WAN
Reroute.
Syntax:
- set ?
- default
-
- first-stabilization
-
- routing-stabilization
-
- stabilization
-
- start-time-of-day-revert-back
-
- stop-time-of-day-revert-back
- default
- Use the set default command to set the defaults to be used by
links that do not have configured stabilization and first-stabilization
times.
Example:
WRS Config>set default ?
FIRST-STABILIZATION
STABILIZATION
- first-stabilization
- Sets the default first-stabilization value to be used for links for which
a first-stabilization time was not configured.
WRS Config>set default first
Default first primary stabilization time (0 - 3600 seconds) [0]? 20
- stabilization
- Sets the default stabilization value to be used for links for which a
stabilization time was not configured.
WRS Config>set default stab
Default primary stabilization time (0 - 3600 seconds) [0]? 30
- first-stabilization
- Sets the number of seconds at router initialization before routing for
this primary link is switched to the alternate link if the primary link is not
up.
Example:
WRS Config>set first
Primary interface number [0]? 1
First primary stabilization time (0 - 3600 seconds -1 = default) [-1]?
- Primary interface number
- This is the primary interface number of the primary interface for which
you are setting first-stabilization. The default is 0.
- First primary stabilization time
- The stabilization time for this primary interface. The default is
1.
- routing-stabilization
- Sets the routing-stabilization value. This parameter defines the
number of seconds that both the primary link and the alternate link remain up
after the primary link has been found to be up and the stabilization timer, if
any, has expired. The routing-stabilization time is provided so that
routing protocols such as OSPF or RIP have enough time to recognize the
availability of the new route. Without the routing-stabilization timer,
traffic can be interrupted for several seconds while the alternate route has
been disabled and the primary route has not yet been discovered.
If the alternate link was up prior to the reroute, the alternate link
remains up and the routing-stabilization timer is ignored. If the
alternate link went down prior to the reroute or during the reroute, the
alternate link remains down and the routing-stabilization timer and the
stabilization timer are both ignored.
WRS Config>set routing-stabilization
Primary interface number [0]? 1
Routing stabilization timer (0 - 3600 seconds) [15]?
- Primary interface number
-
Valid Values: 0 to the number of interfaces configured on
the router
Default Value: 0
- Routing-stabilization timer
-
Valid Values: 1 to 3600 seconds
Default Value: 0
- stabilization
- Sets the number of seconds required after the primary link is first
detected to be up before the process of re-initializing routing on the primary
link begins. When the stabilization timer expires, the alternate link
will be brought down unless the routing-stabilization timer has been
configured. The routing-stabilization timer will start as soon as the
stabilization timer expires and will keep both the primary and the alternate
links up long enough to maintain the traffic on the alternate link while the
routing protocols such as OSPF and RIP reestablish the route over the primary
link.
Example:
WRS Config>set first
Primary interface number [0]? 1
Primary stabilization time (0 - 3600 seconds -1 = default) [-1]?
- Primary interface number
- This is the primary interface number of the primary interface for which
you are setting stabilization. The default is 0.
- Primary stabilization time
- The stabilization time for the primary interface. The default is
1.
- start-time-of-day-revert-back
- Sets the earliest time of the day that the router can switch back to the
primary route. The router can revert back to the primary any time
between the start-time-of-day-revert-back time and the
stop-time-of-day-revert-back time. Reverting back to the primary will
only occur if the primary is up and the stabilization parameters are
met. The default is 0.
Example:
WRS Config>set start
Primary interface number [0]? 1
Time-of-Day revert back window start (1 - 24 hours, 0 = not configured) [0] 3
Start time-of-day revert back configured. Remember to configure stop time-of-day
- Primary interface number
- This is the primary interface number of the primary interface for which
you are setting first-stabilization. The default is 0.
- Time-of-day-revert-back-window start
- This time marks the beginning time for the revert back window. The
router can revert back to the primary interface any time between the
start-time-of-day-revert-back time and the stop-time-of-day-revert-back
time. Reverting back to the primary interface will only occur if the
primary interface is up and the stabilization parameters are met. The
default is 1.
- stop-time-of-day-revert-back
- This time marks the ending time for the revert back window. The
router can revert back to the primary interface any time between the
start-time-of-day-revert-back time and the stop-time-of-day-revert-back
time. Reverting back to the primary interface will only occur if the
primary interface is up and the stabilization parameters are met. The
default is 1.
Example:
WRS Config>set stop
Primary interface number [0]? 1
Time-of-Day revert back window start (1 - 24 hours, 0 = not configured) [0]?
5
- Primary interface number
- This is the primary interface number of the primary interface for which
you are setting first-stabilization. The default is 0.
- Time-of-day-revert-back-window stop
- This time marks the ending time for the revert back window. The
router can revert back to the primary interface any time between the
start-time-of-day-revert-back time and the stop-time-of-day-revert-back
time. Reverting back to the primary interface will only occur if the
primary interface is up and the stabilization parameters are met. The
default is 1.
Use the list command to display monitoring information on one or
all WAN Restoral primary-secondary pairs or one or all WAN Reroute
primary-alternate pairs.
Syntax:
- list
- all
-
- alternate-circuit
-
- secondary-circuit
-
- summary
- all
- Provides summary information, followed by the specific information, for
each secondary interface.
Example:
list all
WAN Restoral/Re-route is enabled with 2 circuits configured
Total restoral attempts = 7 completions = 7
Total packets forwarded = 39
Longest completed restoral period in hrs:min:sec 0:03:27
Total overflow attempts = 20 completions = 19
Longest completed overflow period in hrs:min:sec 0:05:00
Primary Secondary Restoral Restoral Current/Longest
Net Interface Net Interface Enabled Active Duration
------------- ------------- -------- -------- --------------------
4 PPP/0 7 PPP/1 No No 00:03:27/ 00.06.00
Re-route/ Re-route/ Recent
Primary Alternate Overflow Overflow Reroute/Overflow
Net Interface Net Interface Enabled Active Duration
------------- ------------- -------- -------- --------------------
1 FR/0 2 FR/1 Yes/Yes No /No 00:00:56/ 00:05:00
- Total restoral attempts
- The number of times the primary link failed, causing the router to try to
bring up a secondary link.
- Completions
- The number of successful restoral attempts when the secondary link came up
and was used.
- Total packets forwarded
- The total number of packets forwarded across the secondary
interface. It is the sum of both directions, and is cumulative over all
successful restores, until the restart or clear restoral-statistics command is
issued.
- Longest Completed Restoral Period
- This field displays in hours, minutes, and seconds the longest amount of
time a restoral was in operation, not counting any current usage.
- Total Overflow Attempts
- The number of attempts due to an overflow.
- Completions
- The number of successful overflow attempts when the secondary link came up
and was used.
- Longest Completed Overflow Period
- Displays in hours, minutes , and seconds the longest amount of time an
overflow was in operation, not counting any current usage.
- Primary Net Interface
- The interface that is being backed up by its associated secondary
interface.
- Secondary Net Interface
- The dial circuit that is being used to back up the associated primary
interface.
- Restoral Enabled
- Indicates that restoral of this primary interface is currently
enabled.
- Restoral Active
- Indicates whether restoral is active (Yes or No).
- Current/Longest Duration
- Indicates in hours, minutes, and seconds the current and longest duration
the secondary net interface was up.
- Primary Net Interface
- The interface that is being backed up by its associated alternate
interface.
- Alternate Net Interface
- The interface that is being used as an alternate back up the associated
primary interface.
- Re-route/Overflow Enabled
- Indicates whether reroute and overflow are enabled (Yes or No).
- Re-route/Overflow Active
- Indicates whether reroute and overflow are active (Yes or No).
- Recent Re-route Overflow Duration
- Indicates in hours, minutes, and seconds the recent reroute and overflow
duration of the alternate net interface.
- Alternate-circuit
- Provides totals for an alternate circuit. Allows the monitoring
operator to retrieve the WAN Reroute state and associated statistics for each
alternate interface and its associated primary mapping.
Example:
WRS>li alt 7
Primary 1:FR/0 Frame Relay SCC Serial Line
Alternate 7:PPP/1 Point to Point V.25bis Dial Circuit
reroute Enabled, currently inactive
overflow Enabled, currently inactive
Primary first stabilization time: default (0 seconds)
Primary stabilization time: default (0 seconds)
Routing-stabilization time: 15 seconds
Time-of-day revert back not configured: start = 0, stop = 0
Restored 0 times (0 attempts)
Overflow 0 times (0 attempts)
- Primary Interface
- The interface that is being backed up by this associated alternate
interface.
- Alternate Interface
- The dial circuit that is being used to back up the associated primary
interface.
- Reroute Enabled
- Indicates whether reroute of this primary interface is currently
enabled.
- Overflow Enabled
- Indicates whether overflow of this primary interface is currently
enabled.
- Primary first stabilization
- The number of seconds at router initialization before routing for this
primary link is switched to the alternate link if the primary link is not
up.
- First stabilization
- The number of seconds required after the primary link is first detected to
be up before routing is switched back from the alternate link to the primary
link. Routing over the alternate link continues until the primary link
remains up for this number of seconds.
- Routing stabilization
- The number of seconds required after routing is switched back to the
primary link before the alternate link is taken down. During this time
both the primary and the alternate links remain up. This interval is
provided to allow routing protocols such as OSPF and RIP time to recognize the
availability of the route over the primary interface.
- Time-of-day revert back
- The time of the day the router can switch back to the primary
route. The router can revert back to the primary any time between the
start-time-of-day-revert-back time and the stop-time-of-day-revert-back
time. Reverting back to the primary will only occur if the primary is
up and the stabilization parameters are met. The default is 0.
- Restored times
- The number of attempts to reroute the primary interface.
- Overflow times
- The number of dial-on-overflow attempts.
- secondary-circuit
- Provides totals for each secondary circuit. Allows the monitoring
operator to retrieve the WAN Restoral state and associated statistics for each
secondary interface and its associated primary mapping.
Example:
list secondary-circuit
Secondary interface number [0]? 1
Secondary
Primary Interface Secondary Interface Enabled
------------------- -------------------- ---------
1 PPP/0 Point to Poi 3 PPP/1 Point to Poi Yes
Router primary interface state = Up
Router secondary interface state = Available
Restoral Statistics:
Primary restoral attempts = 6 completions = 5
Restoral packets forwarded = 346
Most recent restoral period in hrs:min:sec 00:08:20
- Primary Interface
- The interface that is being backed up by this associated secondary
interface.
- Secondary Interface
- The dial circuit that is being used to back up the associated primary
interface.
- Secondary Enabled
- Indicates whether restoral of this primary interface is currently
enabled.
- Router Primary Interface State
- Indicates that the primary interface state is one of the following:
Up - Indicates that the link is up.
Down - Indicates that the link is down.
Disabled - Indicates that the operator has disabled the link.
Not present - Indicates that the link is configured but there is a
hardware problem.
- Router Secondary Interface State
- Indicates that the associated secondary interface state is one of the
following:
Up - Indicates that the link is up.
Down - Indicates that the link is down. This also occurs when the
base network for the secondary is disabled either at the Config>
prompt or at the operator console.
Available - Indicates that the link is in the waiting mode.
Testing - Indicates that the link is in the process of establishing a
connection.
- Restoral Statistics:
-
- Primary Restoral Attempts
- The number of times the primary failed, causing the router to try to bring
up a secondary link.
- Restoral Packets forwarded
- This field indicates the total number of packets forwarded.
- Most Recent Restoral Period
- This indicates how long the secondary was up, the last time it was used or
during the current restoral use.
- summary
- Provides totals for each secondary circuit.
Example:
list summary
WAN Restoral is enabled with 3 circuit(s) configured
Total restoral attempts = 3 completions = 2
Total packets forwarded = 346
Longest restoral period in hrs:min:sec 00:08:20
Primary Interface and State Secondary Interface and State
--------------------------- -----------------------------------
1 PPP/0 - Up 3 PPP/1 - Available
- Total restoral attempts
- The number of times the primary failed, causing the router to try to bring
up a secondary link.
- Completions
- The number of successful restoral attempts when the secondary came up and
was used.
- Total packets forwarded
- The total number of packets forwarded across the secondary
interface. It is the sum of both directions, and is cumulative over all
restoral periods until the restart or clear restoral-statistics command is
used.
- Longest restoral period
- This field displays in hours, minutes, seconds the longest amount of time
restoral was in use, not counting the current usage.
- Primary Interface and State
- The interface that is being backed up by its associated secondary.
Valid states are:
Up - Indicates that the link is up.
Down - Indicates that the link is down.
Disabled - Indicates that the operator has disabled the link.
Not present - Indicates that the link is configured but there is a
hardware problem.
- Secondary Interface and State
- The dial circuit that is being used to back up the associated
primary. Valid states are:
Up - Indicates that the link is up.
Down - Indicates that the link is down. This also occurs when the
base network for the secondary is disabled either at the Config>
prompt or at the operator console.
Testing - Indicates that the link is in the process of establishing a
connection.
Available - Indicates that the link is in the waiting mode.
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