DGS-3610 Series Configuration Guide Chapter 29 BGP Configuration
Router(config-router)# neighbor
{address | peer-group-name}
route-map map-tag {in | out}
(Optional) Configure to implement the route policy
according to the route-map when the route information
is received from and sent to specified BGP peer
(group).
In the route-map configuration mode, you can use the
match as-path to operate the AS path attribute by the
AS path list, or take the set as-path to operate the AS
attribute value directly.
The BGP will not take the length of the AS path into account when it selects the optimal path
according to the implement of the standard (RFC1771). In general, the shorter the length of
the AS path, the higher the path priority is. Hence, we take the length of the AS path when
we select the optimal path. You can determine whether it is necessary to take the length of
the AS path into account when you select the optimal path according to the actual condition.
If you don‘t hope take the length of the AS path into account when you select the optimal
path, execute the following operations in the BGP configuration mode:
Router(config-router)# bgp bestpath
as-path ignore
(Optional) Allow the BGP to compare with the length of
the AS path when the optimal path is selected.
Within the whole AS, whether all BGP Speakers takes the length of the AS
path into account will be consistent when the optimal path is selected.
Otherwise, the optimal path information selected by various BGP
Speakers will not be consistent with each other.
29.9.2 NEXT_HOP Attribute Related
Configuration
To set the next hop as this BGP Speaker when the route is sent to the specified BGP peer,
you can use the neighbor next-hop-self command, which mainly provides for the use of the
non-mesh networks (such as frame relay and X.25). Execute the following operations in the
BGP configuration mode:
Router(config-router)# neighbor
{address | peer-group-name}
next-hop-self
(Optional) Configure to set the next route information
as this BGP speaker when the route is distributed to
specified BGP peer (group).
You can also modify the next hop of specified path by the set next-hop command of
Route-map.
To Next Page
Loading...
Need help?
General