01-18-2010 08:24 AM - edited 03-04-2019 07:14 AM
I have a Cisco 7200 router configured as an LNS in which they must complete a high number of L2TP tunnels.
It seems very strange that the ouput of the command "sh ip int brief", the virtual-Template appears down-down, even when I'm 35 tunnels on state "established" and are assigned Virtual-Interface
Virtual-Template212 xx.xxx.x.xxx YES TFTP down down
Another problem I encounter is that it assigns the same Virtual-Interface for different circuits. Is this normal?
23488 1201 9891 cpe18@seasunt, Vi2.3 est 19:30:55 950
23504 2469 45432 cpe21@seasunt, Vi2.3 est 14:24:10 271
This is the configuration of the Virtual Template:
interface Virtual-Template212
mtu 1501
ip unnumbered Loopback1
no ip redirects
no ip unreachables
ip mtu 1460
ip tcp adjust-mss 1420
no peer default ip address
ppp max-bad-auth 10
ppp authentication chap vpdn
01-18-2010 01:41 PM
Hello Juan,
my first impressions are:
1) normal virtual-template is used to clone, derivate the virtual-access interfaces. Virtual-access interfaces when up/up belong to active sessions
virtual-template interface can be down/down I think I've seen this.
2) it may be a way to provide scalability to overcome the problem of IDB limitations, it may be a feature and not a problem
see for example the following document to find commands to check L2TP state
Hope to help
Giuseppe
01-19-2010 01:02 AM
Thanks Giuseppe,
I'll try and I mention the results
01-21-2010 07:20 AM
I saw that my router has no problem So I'll start to think it is a problem from the supplier or the CPE.
Thanks for your help
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