303
IPv6 multicast routes and release
suppressed BGP IPv6 multicast routes.
multicast
[ ipv6-address prefix-length ]
Clear flap information for BGP IPv6
multicast routes.
reset bgp
[
instance
instance-name ]
flap-info ipv6 multicast
[ ipv6-address prefix-length |
as-path-acl
as-path-acl-number |
peer
ipv6-address [ prefix-length ] ]
Clear BMP server statistics.
reset bgp
[
instance
instance-name ]
bmp server
server-number
statistics
IPv4 BGP configuration examples
Basic BGP configuration example
Network requirements
As shown in Figure 66, all switches run BGP. Run EBGP between Switch A and Switch B, and run
IBGP between Switch B and Switch C to allow Switch C to access network 8.1.1.0/24 connected to
Switch A.
Figure 66 Network diagram
Requirements analysis
To prevent route flapping caused by port state changes, this example uses loopback interfaces to
establish IBGP connections. Loopback interfaces are virtual interfaces. Therefore, use the peer
connect-interface command to specify the loopback interface as the source interface for
establishing BGP connections. Enable OSPF in AS 65009 to ensure that Switch B can communicate
with Switch C through loopback interfaces.
The EBGP peers, Switch A and Switch B (usually belong to different carriers), are located in different
ASs. Typically, their loopback interfaces are not reachable to each other, so directly connected
interfaces are used for establishing EBGP sessions. To enable Switch C to access the network
8.1.1.0/24 connected directly to Switch A, inject network 8.1.1.0/24 to the BGP routing table of
Switch A.
Configuration procedure
1. Configure IP addresses for interfaces. (Details not shown.)
2. Configure IBGP:
# Configure Switch B.
<SwitchB> system-view
[SwitchB] bgp 65009
[SwitchB-bgp-default] router-id 2.2.2.2
[SwitchB-bgp-default] peer 3.3.3.3 as-number 65009
[SwitchB-bgp-default] peer 3.3.3.3 connect-interface loopback 0
[SwitchB-bgp-default] address-family ipv4 unicast
Switch A
AS 65008
Vlan-int200
3.1.1.1/24
Switch C
Switch B
AS 65009
Vlan-int100
8.1.1.1/24
Vlan-int200
3.1.1.2/24
Vlan-int300
9.1.1.1/24
Vlan-int300
9.1.1.2/24
Loop0
1.1.1.1/32
Loop0
2.2.2.2/32
Loop0
3.3.3.3/32
EBGP IBGP
To Next Page
Loading...
Need help?
General