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JUNOSe 11.0.x BGP and MPLS Configuration Guide
Figure 97: Preventing Potential Routing Loops in the Network
neighbor site-of-origin
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Configuring BGP VPN Services
Use to set a site of origin that is included in the extended community list for
routes received from the specified peer.
If you use this command to configure a site of origin for routes from a peer, then
routes advertised to that peer that contain this site of origin are filtered out and
not advertised. This behavior is followed regardless of whether the neighbor
send-community extended command has been issued for the peer.
The configured site of origin does not override the site of origin if it is already
present in the extended community list of a route.
If you specify a BGP peer group by using the peer-group-name argument, all the
members of the peer group inherit the characteristic configured with this
command. You cannot override the characteristic for a specific member of the
peer group.
The site of origin is applied to all routes that are received or advertised to all
after you issue the command. The session is not bounced.
To apply the new policy to routes that are already present in the BGP routing
table, you must use the clear ip bgp command to perform a soft clear or hard
clear of the current BGP session.
Example
host1(config-router)#neighbor 10.25.32.4 site-of-origin 200:21
Use the no version to remove the site of origin for routes received from the peer.
See neighbor site-of-origin.
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Troubleshooting
