An ATM address is composed of:
ATM routing is based on the Network Prefix plus the End System Identifier.
This adapter MAC address is called the universally administered or the burned-in address.
Using locally administered ESIs instead of allowing the system to default to a universally administered (burned-in) ESI makes problem determination easier.
In both cases, you can then choose a locally unique selector to ensure that your address is valid. You will have 200 Selector values for each ESI that can be assigned to make unique ATM End System Addresses. Addresses will be registered with the switch, which will reject the registration if the ATM address is not unique.
This page defines the locally administered End System Identifier (ESI) component of the ATM End System Address used by an ATM device. If you want to use locally administered ESIs, choose any combination of 12 hexadecimal digits as your ESI.
You may repeat this step up to 16 times in order to associate up to 16 different ESIs with this physical interface. Ensure that you write down all ESIs that you enter, as you will need them later in the configuration process.
It is suggested that you enter locally administered ESIs instead of allowing the system to default to a universally administered ESI. Using locally administered ESIs makes problem determination easier.
Enter an ESI value.
Valid Values: any 12 hexadecimal digits
Default Value: none
Select the Submit button.
This option removes an ESI from your ATM device configuration.
Enter the ESI value you want to remove.
Valid Values: any 12 hexadecimal digits
Default Value: none
Select the Submit button.
All emulated LANs must use a Maximum frame size less than or equal to this value.
Valid Values: An integer in the range of 16 - 65535
Default Value: 9234
This parameter sets defaults and upper bounds for VCC traffic parameters of components, such as LAN Emulation and Classical IP, created on this ATM interface. For example, the parameter sets the default peak cell rate for best effort VCCs initiated by the components. The parameter also sets an upper bound on the cell rates that can be configured for any individual VCC, as well as setting an upper bound on the amount of reserved bandwidth that the components can accept.
The units of the parameter are Mbps. In general, the Default of this parameter should be suitable for most configurations. As an example of a situation where adjusting the value of this parameter could be useful, consider a configuration where the majority of the stations use 25 Mbps adapters. In this case, it might be desirable to limit any individual VCC to 25 Mbps in order to reduce the likelihood of overruns due to speed mismatches. Note that this parameter will not affect instantaneous transmission rates, nor will it constrain cumulative throughput across all VCCs.
Valid Values:
25
100
155
Default Value: 155
Selecting AUTO will allow the device to use the same version of the protocol being run by the ATM switch. If the device is unable to determine the version of the protocol being run by the switch, it will by default use User Network Interface (UNI) 3.0.
Note: If the device defaults to UNI 3.0 and the switch protocol is UNI 3.1, you must override the default and select the UNI version to match the ATM switch.
Valid Values:UNI 3.0, UNI 3.1, AUTO-DETECT
Default Value: UNI 3.0
The reserved selectors begin at hexadecimal '00' and extend through
(value of this parameter) - 1
Note: Storage is allocated based on the values chosen for items 5, 6, and 7. so reducing these values will reduce memory requirements. Allowing these parameters to default will be sufficient for most network configurations.
Valid Values: 0 - 255
Default Value: 200
Valid Values: an integer in the range of 64 - 65535
Default Value: 1024
Each LAN Emulation or Classical IP client and server are considered distinct protocol entities and should be included in this number.
Valid Values: an integer in the range of 64 - 1024
Default Value: 209
This parameter sets the maximum number of parties allowed on a point-to-multipoint call placed from the ATM device.
Valid Values: an integer in the range of 16 - 65535
Default Value: 512
Select the Submit button.
Select the ESI you want to enable in your ATM device configuration. You must have added the ESI before you can enable it.
Select the Submit button.
Select the ESI you want to disable in your ATM device configuration. You must have added the ESI before you can disable it.
Select the Submit button.
A LEC provides the intermediate layer between the connectionless application-to-MAC layer and the connection-oriented layer of ATM. A LEC is identified by a combination of ATM address and MAC address. A LEC resolves LAN addresses to ATM addresses and filters incoming unicast and multicast traffic to ensure that it is destined for the end system represented by the LEC.
LECs may be members of one or more ELANs. Membership in an ELAN does not depend on physical location, and an end user may belong to more than one emulated LAN, but clients cannot communicate across LAN boundaries.
If you do not use the adapter address as the LE client's ESI address, enter the locally administered ESI for the LE client ESI address. If you do not select the adapter address, then only those locally administered ESI addresses that have been configured and enabled for this ATM interface are valid.
Valid Values: any valid MAC address.
This address must be unique across all LECs on the ELAN.
Note. Only one LEC on a given ELAN can use the burned-in MAC address.
Default Value: none
Valid Values: a single octet value that is unique for this LEC and within the range of reserved selector values for the ESI you selected.
If you indicate 'Yes', you can enter the ATM address of the LE Configuration Server, and you do not have to configure the ATM address of the LE Server.
Valid Values: any ATM address
Default Value: none
Otherwise, you enter the ATM address of the LE Server this client will use.
Valid Values: any ATM address
Default Value: none
The value specified for frame-size must be equal to or less than the value specified for ATM max-frame using the Adapter Interface Set option. Select the value that you need for this ELAN.
Specifies the maximum size of an AAL-5 Service Data Unit that the LE Service can guarantee not to drop because it is too large.
Valid Values:
Default Value:
If the ELAN type is token ring, the default is 4544.
If the ELAN type is Ethernet, the default is 1516.
Valid Values: any character string of length 0 - 32 bytes
Default Value: blank
Control timeout is the period used for timing out most request/response control frame interactions.
Valid Values: An integer number of seconds in the range of 10 - 300
Default Value: 120 seconds
This is the maximum number of frames for a given unicast MAC address or route descriptor that may be sent to the BUS within a specified time period.
Valid Values: an integer number of frames in the range of 1 - 10
Default Value: 1 frame
During this period of time, the LEC will send no more than the maximum unknown frame count number of frames to the BUS for a given unicast LAN destination, and the LEC must also initiate the address resolution protocol to resolve that LAN destination.
Valid Values: An integer number of seconds in the range of 1 to 60
Default Value: 1 second
If you are using switched virtual circuits (SVCs), the LEC should release any data direct VCCs that have not been used to transmit or receive data frames for the timeout period.
Valid Values: an integer number of seconds in the range of 1 to unlimited
Default Value: 1200 seconds
This parameter sets the maximum number of times the LEC must retry an LE_ARP_REQUEST for a given LAN destination.
Valid Values: An integer number in the range of 0 to 2
Default Value: 1
This number is the maximum time that a LEC will keep an entry in its LE_ARP cache without verification of the LE_ARP relationship.
Valid Values: An integer number of seconds in the range of 10 - 300
Default Value: 300
This number is the maximum time that a LEC will maintain an entry for a non-local MAC address in its LE_ARP cache without verification of the LE_ARP relationship, as long as the Topology Change flag is true.
Valid Values: An integer number of seconds in the range of 4 - 30
Default Value: 15
This is the maximum time that the LEC expects an LE_ARP_REQUEST/LE_ARP_RESPONSE cycle to take.
Valid Values: An integer number of seconds in the range of 1 to 30
Default Value: 1 second
This is the time limit that the LEC must wait to receive LE_FLUSH_RESPONSE after the LE_FLUSH_REQUEST has been sent before taking recovery action.
Valid Values: An integer number of seconds in the range of 1 to 4
Default Value: 4 seconds
The LEC can assume that a frame sent to the BUS has been either discarded or delivered to the receiver after this amount of time.
Valid Values: an integer number of seconds in the range of 1 to 8
Default Value: 6 seconds
Select Best Effort whenever possible.
Valid Values:
Default Value: Best Effort
The LEC uses this parameter when establishing the Multicast Send VCC. for reserving bandwidth on the VCC to the BUS. It specifies the average rate to be used for forward and backward sustained cell rate to be requested by LEC when setting up multicast send VCC when using reserved bandwidth connections.
Both the setting and the default depend on the parameter specified for Multicast Send VCC type as described in Multicast Send VCC Type.
Valid Values
The LEC uses this parameter when reserving bandwidth on the Multicast Send VCC. It specifies the peak rate to be used for the forward and backward sustained cell rate to be requested by LEC when setting up multicast send VCC when using reserved bandwidth connections.
Both the setting and the default depend on the parameter specified for multicast send VCC type as described in the Multicast Send VCC type.
This is the time period in which data or a READY_IND message is expected from a Calling Party.
Valid Values: an integer number of seconds in the range of 1 to 10
Default Value: 4 seconds
This is maximum number of queued frames per LE_ARP cache entry.
Valid Values: an integer number in the range of 0 - 10
Default Value: 5
This is the number of entries in the LE_ARP cache.
Valid Values: an integer number in the range of 10 - 1024
Default Value: 10
This is the signalling parameter used when establishing best-effort multicast send connections.
Valid Values: an integer number in the range of 10 - device line speed
Default Value: 155000 Kbps
This is the maximum number of times a LE_CONFIG_REQUEST should be sent to the LECS.
Valid Values: an integer number in the range of 0 -5
Default Value: 3
Valid Values: Enable or Disable
Default Value: Disable
Select the Submit button.
This parameter sets the aging timer for the RIF cache. The value that you enter indicates the amount of time that the router holds the information contained in the Routing Information Field (RIF). This is the maximum amount of time (in seconds) that the information in the RIF is maintained before it is refreshed. This is not a required parameter.
Enter a value for RIF aging timer.
Valid Values: an integer number of seconds in the range of 0 - 4096
Default Value: 120 seconds
Select the Submit button.
The LECS provides configuration services for the LAN Emulation Service. The LECS assigns clients to a particular emulated LAN service by giving the client the ATM address of the LAN Emulation Server (LES). The LECS makes assignment based on ATM address or the identity of a LAN destination that it represents. The LECS uses assignment policy values to help make assignments. Each policy value represents an association between a possible value in a configuration request coming from a client and a LES.
The LECS reduces the network management burden by serving as a central repository for configuration data, minimizing configuration of clients.
After the LECS has determined the appropriate LEC to LES assignment pair, the LECS returns to the client configuration data that includes the following information: LES ATM address, ELAN type, Max Frame Size, and ELAN name, as well as any user-defined parameters. The LECS provides configuration services for the LAN Emulation Service.
The ADD option adds a LECS to your ATM network. It adds a LECS to the static configuration of the MSS Server.
Select a value that has not already been assigned to a LAN Emulation component. The range of valid selector values is the same that was specified for the ATM device interface.
This value will default to 0 unless a selector value of 0 has already been used for the ESI you specified in step 1.
The following parameters should assume Defaults unless you are tuning an operational network.
At the sending side of the network, data frames are broken into very short blocks called cells. At the destination side of the network, the cells are reassembled into data frames.
You can specify the traffic characteristics of the cells.
If you enable this parameter, Best Effort Configuration Direct VCCs will be rejected if the Peak Cell Rate exceeds the line speed of the LECS ATM device.
Important Note: Accepting Best Effort VCCs with Peak Cell Rates that exceed the line speed can result in poor performance due to excessive retransmissions. However, rejecting the Best Effort VCCs can result in interoperability problems that may cause traffic on your network to halt.
This rate is the maximum acceptable Sustained Cell Rate for the Configuration Direct VCC. The chosen rate is used for both forward and backward directions on the Configuration Direct VCC.
Valid Values: An integer Kbps in the range of 0 - line speed of the ATM device
Default Value: 0
If this number is exceeded, then VCCs will be released.
Valid Values: An integer in the range of 1 to 128
Default Value: 128
If a VCC has been inactive for this length of time, then it is released.
Valid Values: An integer number of seconds in the range of 3 - 43200
Default Value: 60
Select the Submit button.