Version 6.8 121 Mediant MSBR
Configuration Guide 20. IPv6 Routing
20.4.3 Example 2
This example shows a scenario in which an organization is connected to the public internet
through two ISPs. This is often called a Multi-WAN configuration and it provides high
availability and redundancy of the internet connection. It is demonstrated that both ISPs
advertise a default route through the BGP protocol, and are prioritized using manual
modification of the BGP Weight attribute.
Figure 20-5: BGP IPv6 Example 2
20.4.3.1 Configuration
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Basic Configuration omitted
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MSBR(conf-router)# router bgp 65000
MSBR(conf-router)# bgp router-id 1.1.1.1
MSBR(conf-router)# bgp log-neighbor-changes
MSBR(conf-router)# neighbor 2001:1::20 remote-as 6500
MSBR(conf-router)# neighbor 2001:2::20 remote-as 6501
MSBR(conf-router)# address-family ipv6
MSBR(conf-router)# network 2001::/64
MSBR(conf-router)# network 2001:100:1::/64
MSBR(conf-router)# neighbor 2001:1::20 activate
MSBR(conf-router)# neighbor 2001:2::20 activate
MSBR1:
MSBR(conf-data)# router bgp 6500
MSBR(conf-router)# bgp router-id 10.4.4.69
MSBR(conf-router)# neighbor 2001:1::10 remote-as 65000
MSBR(conf-router)#
MSBR(conf-router)#
MSBR(conf-router)# address-family ipv6
MSBR(conf-router-af)# redistribute connected <- redistribute
all IPv6 connected routes
MSBR(conf-router-af)# neighbor 2002:1::10 activate <- activate
the bgp ipv6 with this neighbor (differently from ipv4, it is
a mandatory command)
MSBR(conf-router-af)# exit
MSBR(conf-router)# exit
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