3Com 7757 Configuration Manual page 366

366 C 36: BGP C
HAPTER ONFIGURATION
c
Configuring BGP
Community
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Table 301 Configure BGP peer group
Operation
Create an Create an IBGP peer
IBGP peer group
group
Add a peer to a peer
group
Create an Create an EBGP peer
EBGP peer group
group
Configure the AS
number of a peer
group
CAUTION:
It is not required to specify an AS number for creating an IBGP peer group.
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If there already exists a peer in a peer group, you can neither change the AS
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number of the peer group, nor delete a specified AS number through the
undo command.
Table 302 Configure BGP community
Operation
Enter system view
Enable BGP, and enter BGP view
Configure the peers to advertise
community attribute to the peer
group
Specify routing policy for the routes
exported to the peer group
CAUTION:
When configuring BGP community, you must use a routing policy to define the
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specific community attribute, and then apply the routing policy when a peer
sends routing information.
For configuration of routing policy, refer to "IP Routing Policy Configuration"
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on page 378.
Command
group group-name Optional
[ internal ]
If the command is executed
peer ip-address group without the internal or
group-name external keyword, an IBGP
[ as-number peer group will be created. You
as-number ] can add multiple peers to the
group, and the system will
automatically create a peer in
BGP view, and configure its AS
number as the local AS
number.
group group-name Optional
external
You can add multiple peers to
peer group-name the group. The system
as-number as-number automatically creates the peer
in BGP view and specifies its AS
number as the one of the peer
group.
Command
system-view
bgp as-number
peer group-name
advertise-community
peer group-name
route-policy
route-policy-name
export
Description
Description
-
Required
By default, the system does not
operate BGP.
Required
By default, no community
attribute or extended
community attribute is
advertised to any peer group.
Required
By default, no routing policy is
specified for the routes
exported to the peer group.