Users Guide

mechanism results in load sharing of traffic corresponding to path X across both the available paths in a
4:1 ratio.
The following example shows the configuration in each router shown in Figure 1:
R1#
interface vlan 10
ip address 1.1.1.1/24
no shut
router bgp 1
maximum-paths ibgp 2
bgp dmzlink-bw
neighbor 1.1.1.2 remote-as 1
neighbor 1.1.1.2 no shutdown
neighbor 1.1.1.3 remote-as 1
neighbor 1.1.1.3 no shutdown
R2#
interface tengigbitethernet 1/1
ip address 1.1.1.2/24
no shut
interface tengigbitethernet 1/2
ip address 4.4.4.1/24
no shut
interface fortyGigE 1/48
ip address 5.5.5.1/24
no shut
router bgp 1
maximum-paths ebgp 2
bgp dmzlink-bw
neighbor 1.1.1.1 remote-as 1
neighbor 1.1.1.1 no shutdown
neighbor 4.4.4.2 remote-as 2
neighbor 4.4.4.2 dmzlink-bw
neighbor 4.4.4.2 no shutdown
neighbor 5.5.5.2 remote-as 2
neighbor 5.5.5.2 dmzlink-bw
neighbor 5.5.5.2 no shutdown
R3#
interface tengigbitethernet 1/1
ip address 1.1.1.3/24
no shutdown
interface fortyGigE 1/48
ip address 3.3.3.1/24
no shut
router bgp 1
maximum-paths ebgp 2
bgp dmzlink-bw
neighbor 1.1.1.1 remote-as 1
neighbor 1.1.1.1 no shutdown
neighbor 3.3.3.2 remote-as 2
neighbor 3.3.3.2 dmzlink-bw
neighbor 3.3.3.2 no shutdown
R4#
interface tengigbitethernet 1/1
ip address 4.4.4.2/24
no shut
router bgp 2
maximum-paths ebgp 2
bgp dmzlink-bw
Equal Cost Multi-Path (ECMP)
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