confederation peer-as
Function
The confederation peer-as command configures the number of each sub-AS of the same confederation.
The undo confederation peer-as command removes the specified sub-AS from the confederation.
By default, no sub-AS number of the confederation is configured.
Format
confederation peer-as { as-number-plain | as-number-dot } &<1-32>
undo confederation peer-as { as-number-plain | as-number-dot } &<1-32>
Parameters
| Parameter | Description | Value |
|---|---|---|
| as-number-plain | Integral AS number | The value is an integer ranging from 1 to 4294967295. |
| as-number-dot | AS number in dotted notation | The value is in the format of x.y, where x and y are integers that range from 1 to 65535 and from 0 to 65535, respectively. |
Usage Guidelines
Usage Scenario
To solve the problem that a large AS may contain too large a full-meshed IBGP, you can use the method of confederation.
Prerequisites
The confederation id command specifies the confederation ID of each sub-AS. If the confederation Id is not configured, this configuration is invalid.
Configuration Impact
The sub-ASs configured in this command belong to the same confederation, and each sub-AS uses fully meshed network.
Precautions
The old speaker with 2-byte AS numbers and the new speaker with 4-byte AS numbers cannot exist in the same confederation. Otherwise, routing loops may occur because AS4_Path does not support confederations.