R0106-HP MSR Router Series Layer 3 - IP Routing Command Reference(V7)

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ip-address: Specifies a peer by its IP address. The peer must have been created.
ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created.
Usage guidelines
The COMMUNITY attribute is a group of specific data carried in update messages. A route can carry
one or more COMMUNITY attribute values (each is represented by a 4-byte integer). The receiving
router processes the route (for example, determining whether to advertise the route and the scope for
advertising the route) based on the COMMUNITY attribute values.
After you execute the peer advertise-community command, routing updates advertised to the peer carry
the
COMMUNITY attribute.
After you execute the undo peer advertise-community command, BGP, upon receiving a route with the
COMMUNITY attribute, removes the COMMUNITY attribute before sending the route to the peer or peer
group.
Examples
# In BGP IPv4 unicast address family view, advertise the COMMUNITY attribute to peer group test.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] address-family ipv4 unicast
[Sysname-bgp-ipv4] peer test advertise-community
# In BGP-VPN IPv4 unicast address family view, advertise the COMMUNITY attribute to peer group test.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ip vpn-instance vpn1
[Sysname-bgp-vpn1] address-family ipv4 unicast
[Sysname-bgp-ipv4-vpn1] peer test advertise-community
# In BGP IPv6 unicast address family view, advertise the COMMUNITY attribute to peer group test.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] address-family ipv6 unicast
[Sysname-bgp-ipv6] peer test advertise-community
Related commands
• apply community
• if-match community
• ip community-list
peer advertise-ext-community
Use peer advertise-ext-community to advertise the extended community attribute to a peer or peer
group.
Use undo peer advertise-ext-community to disable the extended community attribute advertisement to a
peer or peer group.
Syntax
In BGP IPv4 unicast address family view/BGP-VPN IPv4 unicast address family view/BGP IPv4 multicast
address family view: