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Cisco ME 3400 EthernetAccess Switch SoftwareConfiguration Guide
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Chapter32 Configuring IP Unicast Routing Configuring BGP
Beginning in privileged EXEC mode, use these commands to configure BGP peers:
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 router bgp autonomous-system Enter BGP router configuration mode.
Step3 neighbor peer-group-name peer-group Create a BGP peer group.
Step4 neighbor ip-address peer-group
peer-group-name Make a BGP neighbor a member of the peer group.
Step5 neighbor {ip-address | peer-group-name}
remote-as number Specify a BGP neighbor. If a peer group is not configured with a
remote-as number, use this command to create peer groups
containing EBGP neighbors. The range is 1 to 65535.
Step6 neighbor {ip-address | peer-group-name}
description text (Optional) Associate a description with a neighbor.
Step7 neighbor {ip-address | peer-group-name}
default-originate [route-map map-name](Optional) Allow a BGP speaker (the local router) to send the
default route 0.0.0.0 to a neighbor for use as a default route.
Step8 neighbor {ip-address | peer-group-name}
send-community (Optional) Specify that the COMMUNITIES attribute be sent to
the neighbor at this IP address.
Step9 neighbor {ip-address | peer-group-name}
update-source interface (Optional) Allow internal BGP sessions to use any operational
interface for TCP connections.
Step10 neighbor {ip-address | peer-group-name}
ebgp-multihop (Optional) Allow BGP sessions, even when the neighbor is not
on a directly connected segment. The multihop session is not
established if the only route to the multihop peer’s address is the
default route (0.0.0.0).
Step11 neighbor {ip-address | peer-group-name}
local-as number (Optional) Specify an AS number to use as the local AS. The
range is 1 to 65535.
Step12 neighbor {ip-address | peer-group-name}
advertisement-interval seconds (Optional) Set the minimum interval between sending BGP
routing updates.
Step13 neighbor {ip-address | peer-group-name}
maximum-prefix maximum [threshold](Optional) Control how many prefixes can be received from a
neighbor. The range is 1 to 4294967295. The threshold
(optional) is the percentage of maximum at which a warning
message is generated. The default is 75 percent.
Step14 neighbor {ip-address | peer-group-name}
next-hop-self (Optional) Disable next-hop processing on the BGP updates to a
neighbor.
Step15 neighbor {ip-address | peer-group-name}
password string (Optional) Set MD5 authentication on a TCP connection to a
BGP peer. The same password must be configured on both BGP
peers, or the connection between them is not made.
Step16 neighbor {ip-address | peer-group-name}
route-map map-name {in | out}(Optional) Appl y a ro ute m ap t o inco ming or o utgoing r oute s.
Step17 neighbor {ip-address | peer-group-name}
send-community (Optional) Specify that the COMMUNITIES attribute be sent to
the neighbor at this IP address.