3Com S7902E, Configuration Manual

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To do… Use the command… Remarks
Reset the BGP connections to a peer
group
reset bgp group group-name
Reset all iBGP connections reset bgp internal
Reset all IPv4 unicast BGP connections reset bgp ipv4 all
Clearing BGP Information
To do… Use the command… Remarks
Clear dampened MBGP routing
information and release suppressed
routes
reset bgp dampening [ ip-address [ mask |
mask-length ] ]
Clear route flap information
reset bgp flap-info [ ip-address
[ mask-length | mask ] | as-path-acl
as-path-acl-number | regexp
as-path-regular-expression ]
Available in
user view
BGP Configuration Examples
BGP Basic Configuration
Network requirements
In the following network, run eBGP between Switch A and Switch B and iBGP between Switch B and
Switch C so that Switch C can access the network 8.1.1.0/24 connected to Router A.
Figure 1-20 Network diagram for BGP basic configuration (on switches)
Configuration procedure
1) Configure IP addresses for interfaces (omitted)
2) Configure iBGP
z
To prevent route flapping caused by port state changes, this example uses loopback interfaces to
establish iBGP connections.
z
Because loopback interfaces are virtual interfaces, you need to use the peer connect-interface
command to specify the loopback interface as the source interface for establishing BGP
connections.
z
Enable OSPF in AS 65009 to ensure that Switch B can communicate with Switch C through
loopback interfaces.
# Configure Switch B.