The peer advertise-ext-community command enables a device to advertise an extended community attribute to its peer or peer group.
The undo peer advertise-ext-community command restores the default setting.
By default, a device advertises no extended community attribute to its peer or peer group.
Product |
Support |
|---|---|
S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S |
Supported |
S2720-EI, S5720I-SI, S5720-LI, S5735-L, S5735S-L, S5735S-L-M, S5720S-LI, S5720S-SI, S5720-SI, S5735-S, S5735S-S, S5735-S-I, S5730S-EI, S5730-SI, S6720-LI, S6720S-LI, S6720S-SI, and S6720-SI |
Not supported |
peer { group-name | ipv6-address } advertise-ext-community
undo peer { group-name | ipv6-address } advertise-ext-community
| Parameter | Description | Value |
|---|---|---|
| group-name | Specifies the name of a peer group. | The name is a string of 1 to 47 case-sensitive characters, with spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string. |
| ipv6-address | Specifies the IPv6 address of a peer. | The value is a 32-digit hexadecimal number, in the format of X:X:X:X:X:X:X:X. |
Usage Scenario
The peer advertise-ext-community command is used to enable a device to advertise an extended community attribute to a specified peer or peer group. If a device advertises an extended community attribute to a specified peer group, all the members of the peer group will inherit the configuration. This simplifies the application of routing policies and facilitates route maintenance and management.
Prerequisites
Peer relationships have been established using the peer as-number command.
A specific extended community attribute has been defined in a routing policy.
# Configure a device to advertise an extended community attribute to its peer.
<HUAWEI> system-view
[HUAWEI] bgp 100
[HUAWEI-bgp] peer 2:3::4:5 as-number 200
[HUAWEI-bgp] ipv6-family vpn-instance abc
[HUAWEI-bgp6-abc] peer 2:3::4:5 as-number 200
[HUAWEI-bgp6-abc] peer 2:3::4:5 advertise-ext-community