LDP IPv6 can be enabled on the SR OS interface. Figure 1 shows the LDP adjacency and session over an IPv6 interface.
Figure 1. LDP Adjacency and Session over an IPv6 Interface
LSR-A and LSR-B have the following IPv6 LDP identifiers respectively:
<LSR Id=A/128> : <label space id=0>
<LSR Id=B/128> : <label space id=0>
By default, A/128 and B/128 use the system interface IPv6 address.
Note:
Although the LDP control plane can operate using only the IPv6 system address, the user must configure the IPv4-formatted router ID for OSPF, IS-IS, and BGP to operate properly.
The following sections describe the behavior when LDP IPv6 is enabled on the interface.