Filtering BGP Routes Using Route Maps
To filter routes using a route map, use these commands.
1.
Create a route map and assign it a name.
CONFIGURATION mode
route-map
map-name
[permit | deny] [
sequence-number
]
2.
Create multiple route map filters with a match or set action.
CONFIG-ROUTE-MAP mode
{match | set}
For information about configuring route maps, refer to
3.
Return to CONFIGURATION mode.
CONFIG-ROUTE-MAP mode
exit
4.
Enter ROUTER BGP mode.
CONFIGURATION mode
router bgp
as-number
5.
Filter routes based on the criteria in the configured route map.
CONFIG-ROUTER-BGP mode
neighbor {
ip-address
|
peer-group-name
} route-map
map-name
{in | out}
Configure the following parameters:
•
ip-address
or
peer-group-name
: enter the neighbor’s IP address or the peer group’s name.
•
map-name
: enter the name of a configured route map.
•
in
: apply the route map to inbound routes.
•
out
: apply the route map to outbound routes.
To view the BGP configuration, use the
show config
command in CONFIGURATION ROUTER BGP
mode. To view a route map configuration, use the
show route-map
command in EXEC Privilege mode.
Filtering BGP Routes Using AS-PATH Information
To filter routes based on AS-PATH information, use these commands.
1.
Create a AS-PATH ACL and assign it a name.
CONFIGURATION mode
ip as-path access-list
as-path-name
2.
Create a AS-PATH ACL filter with a deny or permit action.
AS-PATH ACL mode
{deny | permit}
as-regular-expression
244
Border Gateway Protocol IPv4 (BGPv4)
Summary of Contents for S4820T
Page 1: ...Dell Configuration Guide for the S4820T System 9 8 0 0 ...
Page 282: ...Dell 282 Control Plane Policing CoPP ...
Page 622: ...Figure 81 Configuring Interfaces for MSDP 622 Multicast Source Discovery Protocol MSDP ...
Page 623: ...Figure 82 Configuring OSPF and BGP for MSDP Multicast Source Discovery Protocol MSDP 623 ...
Page 629: ...Figure 86 MSDP Default Peer Scenario 2 Multicast Source Discovery Protocol MSDP 629 ...
Page 630: ...Figure 87 MSDP Default Peer Scenario 3 630 Multicast Source Discovery Protocol MSDP ...
Page 751: ...10 11 5 2 00 00 05 00 02 04 Member Ports Te 1 2 1 PIM Source Specific Mode PIM SSM 751 ...
Page 905: ...Figure 112 Single and Double Tag First byte TPID Match Service Provider Bridging 905 ...
Page 979: ...6 Member not present 7 Member not present Stacking 979 ...
Page 981: ...storm control Storm Control 981 ...
Page 1103: ...Figure 134 Setup OSPF and Static Routes Virtual Routing and Forwarding VRF 1103 ...
