L2TP to Cisco

RouterOS General
1 
echo: l2tp,ppp,debug,packet Peer VPN: rcvd LCP ConfNak id=0x17
echo: l2tp,ppp,debug,packet    <mru 1500>
echo: l2tp,ppp,debug,packet Peer VPN: sent LCP ConfReq id=0x18
echo: l2tp,ppp,debug,packet    <magic 0x25413bec>
echo: l2tp,ppp,debug,packet Peer VPN: rcvd LCP ConfRej id=0x18
echo: l2tp,ppp,debug,packet    <magic 0x25413bec>
echo: l2tp,ppp,debug,packet Peer VPN: sent LCP ConfReq id=0x19
echo: l2tp,ppp,debug,packet Peer VPN: rcvd LCP ConfAck id=0x19
echo: l2tp,ppp,debug,packet    <magic 0x25413bec>
echo: l2tp,ppp,debug Peer VPN: LCP received bad ConfAck
echo: l2tp,ppp,debug Peer VPN: PPP received non-LCP packet (0xc223) when LCP not open

Uhm… :confused: What’s happening here?

2

try to set “lcp renegotiation on-mismatch” in cisco.

Also cisco has some very usefull logs.

3

Hiya Eugene,

Unfortunately, that can’t be done… Big coroprate I don’t have access to the VPN Concentrator, nor any remote possibility to change the config.

It’s weird though. We seem to be using some form of double authentication - first to the VPN Concentrator, and then Kerberos to a Windows AD. This will definately not work in MT, I’m stuck at using the Cisco VPN Client for this :frowning:

Thanks anyways…