What is the meaning of "0" in X.X.X.X:0 of display mpls ldp session?
We often read "X.X.X.X:0" and "X.X.X.X:2" after entering display mpls ldp session, for example,
<Quidway>disp mpls ldp sess
Local LDP ID: 18.104.22.168:0; Peer LDP ID: 22.214.171.124:0
TCP Connection: 126.96.36.199 <- 188.8.131.52
Session State: Operational
Session Role: Passive
Here "0" and "2" of "X.X.X.X:0" and "X.X.X.X:2" are:
0: LDP Allocation tag is based on platform.
Non-0: LDP Allocation tag is based on interface.
Tag based on platform is to realize LSP load balance.
VRP3 platform is based on interface to have tag allocation. VRP5 is changed as tage allocation based on platform.