Command Reference Guide

3Com Router 5000 Family and Router 6000 Family ttl propagate ● 95
Command Reference
ttl propagate
Purpose Use the ttl propagate command to enable IP TTL duplication of MPLS.
Use the undo ttl propagate command to disable IP TTL duplication of MPLS.
Syntax ttl propagate { public | vpn }
undo ttl propagate { public | vpn }
Parameters public
Configures to apply TTL duplication to the packets on
the public network.
vpn
Configures to apply TTL duplication to the VPN
packets.
Example Apply IP TTL duplication of MPLS to VPN packets.
[3Com -mpls] ttl propagate vpn
View This command can be used in the following views:
■ MPLS view
Description The ttl propagate command is only available with the NE16E, NE08E, and NE05.
CAUTION: The configuration of TTL duplication must be the same on all the PEs. If
otherwise, the results of traceroutes cannot reflect the real network conditions.
Related Commands ■ tracert
■ ttl expiration