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Spirent KB Article
Doc ID: FAQ14201
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Spirent TestCenter: Why should I set IPv6 next hop and IPv6 link local next hop addresses while sending IPv6 routes for BGP with 'IPv4 only' encapsulation?
BGP with 'IPv4 only'
It is working as per RFC.
from the RFC4659 (
22.214.171.124. BGP Speaker Requesting IPv4 Transport
When the IPv6 VPN traffic is to be transported to the BGP speaker using IPv4 tunneling (e.g., IPv4 MPLS LSPs, IPsec-protected IPv4 tunnels), the BGP speaker SHALL advertise to its peer a Next Hop.
Network Address field containing a VPN-IPv6 address:
- whose 8-octet RD is set to zero, and
- whose 16-octet IPv6 address is encoded as an IPv4-mapped IPv6 address [V6ADDR] containing the IPv4 address of the advertising BGP speaker. This IPv4 address must be routable by the other BGP Speaker.
Product : Spirent TestCenter,Routing,Spirent TestCenter,BGP