Warning vpdn-group l2tp

matou — Sat, 29 Mar 2025 16:24:08 GMT

Hello,

I have a router asr1001-x that is configured for "LNS". There is already a vpdn-group 1 that is connected to a LAC. I want to configure a second vpdn-group to connect it to other LACs from another operator, but I have the following error message when I validate accept-dialin.

% Warning, the vpdn groups ISP2 and ISP1 have the same accept-dial configuration

ISP1 works fine on the lakes and ppp sessions work fine, but on ISP2, the ISP2 LAC have errors (tunnel auth failed for mismatch).

vpdn-group ISP1
accept-dialin
protocol l2tp
virtual-template 1
lcp renegotiation always

ip mtu adjust
!
vpdn-group ISP2
! Default L2TP VPDN group
accept-dialin
protocol l2tp
virtual-template 2
terminate-from hostname ISP2_LAC
lcp renegotiation always

ip mtu adjust

interface Virtual-Template1
mtu 1460
ip unnumbered Loopback0
no ip redirects
ip tcp adjust-mss 1420
no logging event link-status
no peer default ip address
no ppp lcp fast-start
ppp authentication pap chap
ppp ipcp address required
ppp ipcp address unique
!
interface Virtual-Template2
mtu 1460
ip unnumbered Loopback0
no ip redirects
ip tcp adjust-mss 1420
no logging event link-status
no peer default ip address
no ppp lcp fast-start
ppp authentication pap chap
ppp ipcp address required
ppp ipcp address unique

Thank you for help.

Re: Warning vpdn-group l2tp

balaji.bandi — Sat, 29 Mar 2025 15:01:50 GMT

Why do both use the same virtual template 1? (You have created two interfaces; both configurations exhibit this error or intention.)

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/vpdn/configuration/xe-2/vpd-xe-2-book/vpd-cfg-nas-init-dialin-tunnels.html

Re: Warning vpdn-group l2tp

MHM Cisco World — Sat, 29 Mar 2025 15:14:38 GMT

vpdn search-order domain

domain domain1/2

you need to use domain to specify virtual template

MHM

Re: Warning vpdn-group l2tp

matou — Sat, 29 Mar 2025 15:23:50 GMT

Hello,

Keyboard error, I corrected post.

topic Re: Warning vpdn-group l2tp in Network Security

Warning vpdn-group l2tp

Re: Warning vpdn-group l2tp

Re: Warning vpdn-group l2tp

Re: Warning vpdn-group l2tp