Alcatel-Lucent OmniAccess 700, Cli Configuration Manual

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Border Gateway Protocol
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498
Beta Beta
CLI Configuration Guide
Alcatel-Lucent
BGP C
ONFIGURATION
C
OMMANDS
There are several mandatory and optional configuration options available to
configure BGP in OA-700. Some of the basic configuration required for a BGP
connection with a peer is described in the following sections in this chapter.
T
O
E
NABLE
BGP R
OUTING
E
XAMPLE
ALU(config)# router bgp 30
ALU(config-router bgp AS30)#
Note: Private AS value can range from 64512 to 65535.
T
O
C
ONFIGURE
BGP N
EIGHBORS
After you have enabled the BGP routing process, the next step is to configure
BGP neighbors. Every neighbor that this router wishes to peer with needs to be
configured.
A BGP neighbor can be either internal or external.
•
Internal Neighbor: Neighbors who are in the same AS. This is also referred to as
an iBGP connection.
•
External Neighbor: Neighbors who are in different AS. This is also commonly
referred to as an eBGP connection. External neighbors are usually adjacent to
each other, if they are not,
ebgp multihop needs to be configured for that
neighbor.
E
XAMPLE
ALU(config-router bgp AS30)# neighbor 1.1.1.1 remote-as 100
Command (in CM) Description
router bgp <1-65535>
This command enables BGP routing.
This enters Router Configuration Mode.
The range 1-65535 indicates
Autonomous System number.
Command (in RCM) Description
neighbor {< ip-address> | <peer-
group-name> } remote-as
<1-65535>
Configures a BGP neighbor and the AS
to which this neighbor belongs.