269
for example), the AS_PATH attribute of a route from a peer must be allowed to contain the local AS
number. Otherwise, the route cannot be advertised correctly.
Examples
# In BGP IPv4 unicast instance view, configure the number of times the local AS number can appear in
AS_PATH attribute of routes from peer group
test
as 2.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ipv4-family unicast
[Sysname-bgp-ipv4] peer test allow-as-loop 2
# In BGP-VPN IPv6 unicast instance view, configure the number of times the local AS number can appear
in AS_PATH attribute of routes from peer group
test
as 2.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ip vpn-instance vpn1
[Sysname-bgp-vpn1] ipv6-family unicast
[Sysname-bgp-ipv6-vpn1] peer test allow-as-loop 2
peer as-number (for a BGP peer)
Use
peer as-number
to create a BGP peer and specify its AS number.
Use
undo peer
to delete a BGP peer.
Syntax
peer
{
ip-address
|
ipv6-address
}
as-number
as-number
undo peer
{
ip-address
|
ipv6-address
}
Default
No BGP peer is created.
Views
BGP view, BGP-VPN instance view
Predefined user roles
network-admin
Parameters
ip-address
: Specifies the IP address of a peer.
ipv6-address
: Specifies the IPv6 address of a peer.
as-number
: Specifies an AS number for the peer, in the range of 1 to 4294967295. If the AS numbers of
the peer and the local router are the same, the peer is an IBGP peer. If they are different, the peer is an
EBGP peer.
Usage guidelines
You can also create a peer and add it to a peer group by using the
peer group
command.
To modify the AS number of a peer, do not execute the
peer as-number
command repeatedly. Instead,
you must first delete the peer and configure it again.
