Chapter 29 BGP Configuration DGS-3610 Series Configuration Guide
By default, each member of the peer group will inherit all configurations of the peer group.
However, each member is allowed to configure the optional configurations which have no
effect on the output update independently, to replace the unified configuration of the peer
group.
Each memberof the peer is allowed to configure the optional
independently for replacing the unified configuration of it. But the
information independently configured does not contain the updated
configuration information effected on the output. That is to say, Each
member of the peer group will inherit following configuration for the peer
groups: remote-as, update-source, local-as, reconnect-interval ,
times, advertisemet-interval, default-originate, next-hop-self,
password remove-private-as, send-community , distribute-list out,
filter-list out, prefix-list out, route-map out, unspress-map,
route-reflector-client.
Use the commane neighbor update-source to select the effective interface to establish the
connection of TCP. The important role of this command is to provice Loopback interface for
using, so as to the connection reached to the IBGP Speaker is more stable.
By default, it‘s required to phisically direct-connect with for the BGP Peers to establish the
connection with EBGP. You can use neighbor ebgp-multihop command to establish the
EBGP peers among the non-direct-connection External BGP Speakers.
For prevent the route loop and vibration, It is necessary to present the
non-default routing to reach the opposite party among EBGP peers
established the connection with BGP which multi-hop is needed..
For the sake of the security, you can set the authentication for the BGP peers (group) which
will establish the connection, the authentication uses the MD5 algorithm. The authentication
password set for the BGP peer should be identical. The process to enable the MD5
authentication in BGP is shown as follows:
Router(config-router)# neighbor
{address | peer-group-name} password
string
When the BGP connection with the BGP peer is
established, use this command to enable the TCP MD5
authentication and set the password.
Use the no neighbor {ip-address | peer-group-name} password command to disable the
MD5 authentication set among the BGP peer (group).
Use the neighbor shutdown command to disable the valid connection established with the
peer (group) immediately, and delete all route information related to the peer (group).
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