Cisco CRS Configuration Manual page 258
Ios xr virtual private network
Hide thumbs
Also See for CRS:
- Configuration manual (430 pages) ,
- User manual (304 pages) ,
- Command reference manual (155 pages)
Table of Contents
Advertisement
Configuring Carrier Supporting Carrier
Step 8
neighbor ip-address
Example:
RP/0/RP0/CPU0:router(config-bgp-vrf)# neighbor 10.0.0.0
Configures a CE neighbor. The ip-address argument must be a private address.
Step 9
remote-as as-number
Example:
RP/0/RP0/CPU0:router(config-bgp-vrf-nbr)# remote-as 2
Configures the remote AS for the CE neighbor.
Step 10
ebgp-multihop { maximum hops | mpls }
Example:
RP/0/RP0/CPU0:router(config-bgp-vrf-nbr)# ebgp-multihop 55
Configures the CE neighbor to accept and attempt BGP connections to external peers residing on networks that are not
directly connected.
Step 11
address-family ipv6 unicast
Example:
RP/0/RP0/CPU0:router(config-bgp-vrf-nbr)# address-family ipv6 unicast
Specifies an IPv6 address family unicast and enters address family configuration submode.
To see a list of all the possible keywords and arguments for this command, use the CLI help (?).
Step 12
site-of-origin [as-number:nn | ip-address:nn ]
Example:
RP/0/RP0/CPU0:router(config-bgp-vrf-nbr-af)# site-of-origin 234:111
Configures the site-of-origin (SoO) extended community. Routes that are learned from this CE neighbor are tagged with
the SoO extended community before being advertised to the rest of the PEs. SoO is frequently used to detect loops when
as-override is configured on the PE router. If the prefix is looped back to the same site, the PE detects this and does not
send the update to the CE.
Step 13
as-override
Example:
RP/0/RP0/CPU0:router(config-bgp-vrf-nbr-af)# as-override
Configures AS override on the PE router. This causes the PE router to replace the CE's ASN with its own (PE) ASN.
This loss of information could lead to routing loops; to avoid loops caused by as-override, use it in conjunction
Note
with site-of-origin.
Cisco IOS XR Virtual Private Network Configuration Guide for the Cisco CRS Router, Release 6.1.x
244
Implementing MPLS Layer 3 VPNs
Advertisement
Table of Contents
