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DES-7200 Configuration Guide Chapter 6 BGP
Configuration
6-17
6.11.2 NEXT_HOP Attribute
To set the next hop as the local BGP Speaker for sending the route information to
the specified BGP peer, you can use the neighbor next-hop-self command,
which is mainly used in the non-mesh networks (such as frame relay and X.25).
Execute the following operations in the BGP configuration mode:
Command Function
DES-7200(config-router)# neighbor
{address | peer-group-name}
next-hop-self
(Optional) Set the next hop as the
local BGP speaker for distributing the
route information to the specified
BGP peer (group).
You can also modify the next hop of the specified path by the set next-hop
command of Route-map.
Caution
This command is not recommended to use under the full mesh network
environment (such as Ethernet) for it will cause additional hops and incur
unnecessary overhead.
6.11.3 MULTI_EXIT_DISC Attribute Configuration
The BGP takes the MED value as the foundation of priority comparision of the
paths learned from the EBGP Peers. The smaller the MED value, the higher the
priority of the path is.
By default, it will only compare with the MED value for the path of the peers from
the same AS when the optimal path is selected. If you hope to compare with the
MED value for the path of the peers from different ASs, execute the following
operations in the BGP configuration mode:
Command Function
DES-7200(config-router)# bgp
always-compare-med
(Optional) Compare with the MED
value for the path of different ASs.
By default, it will not compare with the MED value for the path of the peers for
other ASs within the AS association when the optimal path is selected. If you
hope to compare with the MED value for the path of the peers from different AS
confederations, execute the following operations in the BGP :configuration mode
Command Function
DES-7200(config-router)# bgp
bestpath
med confed
(Optional) Compare with the MED
value for the path of the peers from
other ASs within the confederation.