Add SuperELAN

This option allows you to add a SuperELAN configuration. A new Super ELAN is added to the corresponding ATM real interface configuration menu from which this SuperELAN configuration menu is accessed).

Even though a SuperELAN is directly associated with a single ATM Adapter, a SuperELAN can span multiple ATM Adapters provided the ATM Adapter network ID for all ATM Adapters on which the SuperELAN resides have the same value. The ATM Adapter network ID is a configurable parameter which identifies the ATM network to which the ATM adapter is attached. Therefore, if two ATM Adapter interfaces are configured with different ATM network IDs, a SuperELAN can not be configured to span both ATM interfaces since short-cut VCCs could not be established between ELANs on the two ATM networks.

  1. Enter the SuperELAN name you want to add.

    Valid Values: Any 32-character string

    Default Value: none

  2. Select the Submit button.

  3. Enter the SuperELAN ID for the SuperELAN you want to add.

    Valid Values: 1 - 65279

    Default Value: 0

  4. Select the Type of SuperELAN.

  5. Select the maximum frame size of the SuperELAN.

Select the Submit button.


Delete SuperELAN

This option allows you to remove a SuperELAN configuration from the corresponding ATM real interface configuration menu from which this SuperELAN configuration menu is accessed).

Select the SuperELAN name to be removed.

Select the Submit button.


Rename SuperELAN

This option allows you to rename a SuperELAN configuration.

  1. Select the SuperELAN name to be renamed.

  2. Select the Submit button.

  3. Enter the new SuperELAN name.

    Valid Values: Any 32-character string

    Default Value: none

Select the Submit button.


Add ELAN to SuperELAN

This option allows you to add an ELAN to an existing a SuperELAN configuration.

Both local and remote ELANs may be added.

Local ELANs represent LES/BUes defined in the same device as the SuperELAN.

Remote ELANs represent LES/BUSes defined in other devices.

  1. Select the ELAN name to be added.

  2. Select the Submit button.

  3. Enter the name of the ELAN to be added.

    Valid Values: Any 32-character string

    Default Value: none

  4. Select the Submit button.

  5. Click to Connect to the remote ELAN using the LECS.

  6. Click to Use Well-known LECS address.

  7. Enter the LECS Address and the LES Address.

    Valid Values: Any 40-digit hexadecimal string

    Default Value: 0

Select the Submit button.


Delete ELAN from SuperELAN

This option allows you to delete an ELAN from an existing a SuperELAN configuration.

  1. Select the ELAN name to be deleted.

Select the Submit button.


Set Spanning Tree Address

This option allows you to set the SuperELAN spanning tree address used for constructing the SuperELAN spanning tree.

  1. Enter the Spanning Tree Address.

    Valid Values: Any valid MAC address

    Default Value: 0

Select the Submit button.


Set Cache Age

This option allows you to set the MAC cache age. For a token-ring SuperELAN, this parameter also sets the route-descriptor cache age.

  1. Enter the MAC Filter Cache Age.

    Valid Values: 60 - 3600 seconds

    Default Value: 300

  2. Enter the RD Filter Cache Age.

    Valid Values: 600 - 65535 seconds

    Default Value: 1800

Select the Submit button.


Set Cache Size

This option allows you to set the MAC cache size.

  1. Enter the MAC Filter Cache Size.

    Valid Values: 1 - 10000 seconds

    Default Value: 1000

Select the Submit button.


Set Maximum Frame Size

This option allows you to set the SuperELAN frame size. Only ELANs matching the SuperELAN frame size can be configured in the SuperELAN.

Select the Maximum frame size of the SuperELAN.

Select the Submit button.


Set Spanning Tree Parameters

This option allows you to set the SuperELAN spanning tree parameters.

  1. Enter the Priority.

    This parameter indicates the SuperELAN short-cut bridge spanning tree priority. A lower value will increase the likelihood of a SuperELAN short-cut bridge becoming the root. This value is prefixed to the SuperELAN spanning tree MAC Address to form a SuperELAN short-cut bridge ID.

    Valid Values: 0 - 65535 seconds

    Default Value: 32768

  2. Enter a Max Age. This parameter is the age at which the current spanning tree configuration is considered too old. A value that is too small may cause the spanning tree to unnecessarily reconfigure. A value too large will increase the time it takes for the spanning tree to converge once an outage is detected.

    Valid Values: 6 - 40

    Default Value: 20

  3. Enter a Hello Time value. This parameter is the interval of time, in seconds, between the generation of spanning tree configuration messages generated by the root. Lower values increase the spanning tree robustness, but increase the network traffic overhead.

    Valid Values: 1 - 10

    Default Value: 2

  4. Enter a Forward Delay. This is the delay, in seconds, that the SuperELAN bridge waits before transitioning to the next port state. The forward delay should be large enough to allow all SuperELAN bridges in the SuperELAN to disable ports in the new topology prior to this short-cut bridge forwarding data frames. Values too low may cause temporary loops in the SuperELAN. Values too large may lengthen network partitions after the spanning tree has converged. The default value of 15 indicates that the short-cut bridge will begin forwarding frames 30 seconds after the spanning tree has converged: 15 seconds in listening state and 15 seconds in learning state.

    Valid Values: 4 - 30

    Default Value: 15

Select the Submit button.


Set SuperELAN ID

This option allows you to set the SuperELAN identifier associated with this SuperELAN.

Unlike the SuperELAN implementation under the ASRT Config> command prompt, the SuperELAN ID is used to construct redundant SuperELANs that span multiple devices. The SuperELAN ID is included as part of the spanning tree Topology frames and has external significance.

Only ELANs matching the SuperELAN frame size can be configured in the SuperELAN.

Enter the SuperELAN ID.

Valid Values: 1 - 65279

Default Value: 1

Select the Submit button.


Trace Address

This command, used with the ELS packet tracing facility, controls packet tracing configuration for the SuperELAN.

Setting the Destination Address Value, Destination Address Mask, Source Address Value, and Source Address Mask provides a mechanism for limiting the frames sent or received by the SuperELAN bridge to be traced. Frames passing the MAC address trace filter will be forwarded to ELS to be traced. A frame is considered traceable if:

For example, the following trace address settings will trace any frame received or transmitted to any ELAN in the SuperELAN that has a destination address of 0x000012120021 and was originated from any device with a MAC address beginning with 0x10005A.

  1. Enter the SuperELAN Trace Dest Address mask.

    Valid Values: Any 12-hexadecimal digit MAC address mask.

    Default Value: 0

  2. Enter the SuperELAN Trace Dest Address value.

    Valid Values: Any 12-hexadecimal digit MAC address value.

    Default Value: 0

  3. Enter the SuperELAN Trace Source Address masl.

    Valid Values: Any 12-hexadecimal digit MAC address mask.

    Default Value: 0

  4. Enter the SuperELAN Trace Source Address value.

    Valid Values: Any 12-hexadecimal digit MAC address value.

    Default Value: 0

Select the Submit button.