Hi, on a Juniper backbone, we have a Cisco AS5400 acts as a LAC, while there's Juniper device act as a LNS. I've few problems that I bumped into and dunno what is the cause. Let me summarize it into point form:
i. I've made the L2TP tunnel able to establish, but as far as I concern, LAC is tranparent, which means it only need to have a single default route to the LNS. And if a remote-site establish a connection through ISDN to the LAC, the authentication is done by the LNS itself. Hence the connection is directly to the LNS, LAC just act as a medium to transfer the connection aint it? But when the L2TP tunnel establish, the remote end get assigned an IP by the LNS, in this case 10.10.10.2, while at the LNS side the loopback is 10.10.10.1, I can't even ping to 10.10.10.1, but i still get the IP assigned.
ii. When I did some "debug ip packet", in the mean time if I ping to 10.10.10.2, the message appeared saying "encap failed". While if i ping to 10.10.10.1 (failed), i can't see anything flow out although "debug ip packet" is on.
are you guys having any idea, please see through the text file, I've included the configuration and some captures. Appreciate if you guys could shed some lights to my problems.
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