2. Assign an IP address to each VLANIF interface.
The configuration details are not mentioned here.
3. Create EBGP peer relationships.
Configure SwitchA.
[SwitchA] bgp 65008
[SwitchA-bgp] router-id 1.1.1.1
[SwitchA-bgp] peer 200.1.1.1 as-number 65009
[SwitchA-bgp] peer 200.1.2.1 as-number 65009
[SwitchA-bgp] quit
# Configure SwitchB.
[SwitchB] bgp 65009
[SwitchB-bgp] router-id 2.2.2.2
[SwitchB-bgp] peer 200.1.1.2 as-number 65008
[SwitchB-bgp] peer 9.1.1.2 as-number 65009
[SwitchB-bgp] ipv4-family unicast
[SwitchB-bgp-af-ipv4] network 9.1.1.0 255.255.255.0
[SwitchB-bgp-af-ipv4] quit
[SwitchB-bgp] quit
# Configure SwitchC.
[SwitchC] bgp 65009
[SwitchC-bgp] router-id 3.3.3.3
[SwitchC-bgp] peer 200.1.2.2 as-number 65008
[SwitchC-bgp] peer 9.1.1.1 as-number 65009
[SwitchC-bgp] ipv4-family unicast
[SwitchC-bgp-af-ipv4] network 9.1.1.0 255.255.255.0
[SwitchC-bgp-af-ipv4] quit
[SwitchC-bgp] quit
# Check the routing table of SwitchA.
[SwitchA] display bgp routing-table
BGP Local router ID is 1.1.1.1
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Total Number of Routes: 2
Network NextHop MED LocPrf PrefVal Path/Ogn
*> 9.1.1.0/24 200.1.1.1 0 0 65009i
* 200.1.2.1 0 0 65009i
You can view that there are two valid routes to the destination 9.1.1.0/24. The route whose
next hop is 200.1.1.1 is the optimal route because the router ID of SwitchB is smaller.
4. Configure load balancing.
Configure SwitchA.
[SwitchA] bgp 65008
[SwitchA-bgp] ipv4-family unicast
[SwitchA-bgp-af-ipv4] maximum load-balancing 2
[SwitchA-bgp-af-ipv4] quit
[SwitchA-bgp] quit
# Check the routing table of SwitchA.
[SwitchA] display bgp routing-table
BGP Local router ID is 1.1.1.1
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Total Number of Routes: 2
Network NextHop MED LocPrf PrefVal Path/Ogn
S6700 Series Ethernet Switches
Configuration Guide - IP Routing 7 BGP Configuration
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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