Hello,
I try to establish an IPSEC tunnel between two 2621 routers on a serial line and we want to do voice over IP on that line. So, we have to do fragmentation. We have this configuration on each router:
int multilink 1
bandwith 512
ip address 192.168.0.x 255.255.255.252
ppp multilink
ppp multilink fragment-delay 10
ppp multilink interleave
multilink-group 1
interface s2/1
bandwith 512
no ip address
encapsulation ppp
ppp multilink
multilink-group 1
The problem is that I would like to apply an IPSEC policy but it doesn't work if I apply crypto map to interface s2/1 and/or interface multilink1.
If I delete interface multilink on both sides, the crypto map IPSEC works well.
So I am sure that IPSEC configuration itself is correct but I don't know if it's possible to implement it with ppp multilink configured on a serial line.
Does anybody have an idea in order to make IPSEC work with ppp multilink on interface serial ?
Thanks,
Herve
