6PE IPv6 packet that is transmitted by way of a tunnel mpls.
6PE signaling, PE received from the IPv6 unicast routing the CE, PE MPLS label for a routing assignment, then advertised to RR, i.e. with the IPv6 unicast routing label.
Further ldpv4 between PE, P tags to normal distribution.
PE iBGP information specific to RR: (prefix tag, the next hop)
iBGP Route IPv6 LU
(AFI = 2, SAFI = 4)
NLRI: fc00 :: 10: 2: 34: 0/112
Label 24040, MED 100
Next hop ::: ffff: 172.16.0.44
6PE forwarding outbound packets encapsulating layer 2 labels on PE, inner layer IPv6 unicast routing label distribution, the outer label ipv4 fec.
Configuration, a simplified example between PE-CE focus:
1.interface{
ipv4 addr
ipv6 addr
}
2.protocol{
bgp
group eBGP-65000 {// multiprotocol
family inet unicast;
family inet6 unicast;
neighbor 10.1.0.0;
}
}
3.policy-options // rewrite IPv6 next hop.
{
from family inet6;
then next-hop fc00::10:1:0:1;
}