358
[Sysname-bgp] address-family l2vpn
[Sysname-bgp-l2vpn] peer 1.1.1.1 enable
Related commands
display bgp peer
peer fake-as
Use
peer fake-as
to advertise a fake AS number to a peer or peer group.
Use
undo peer fake-as
to restore the default.
Syntax
peer
{
group-name
|
ip-address
|
ipv6-address
}
fake-as
as-number
undo peer
{
group-name
|
ip-address
|
ipv6-address
}
fake-as
Default
No fake local AS number is advertised to a peer or peer group.
Views
BGP view, BGP-VPN instance view
Predefined user roles
network-admin
Parameters
group-name
: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer
group must have been created.
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.
as-number
: Specifies a fake AS number in the range of 1 to 4294967295.
Usage guidelines
After you move a BGP router from an AS to another AS (from AS 2 to AS 3 for example), you have to
modify the AS number of the router on all its EBGP peers. To avoid such modifications, you can configure
the router to advertise a fake AS number 2 to its EBGP peers so that the EBGP peers still think that Router
A is in AS 2.
The
peer fake-as
command is only applicable to EBGP peers or peer groups.
If you execute the
peer fake-as
command on the local router, specify the local router's AS number on the
peer as the fake local AS number specified in the command.
Examples
# In BGP view, advertise a fake AS number of 200 to the peer group
test
.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] peer test fake-as 200
# In BGP-VPN instance view, advertise a fake AS number of 200 to the peer group
test
.
<Sysname> system-view
[Sysname] bgp 100
