PseudoWire on Cisco 881

[Ralema Geno]

We have configured a Cisco 881 for Pseudo Wire, however Virtual PPP does not come UP.

Config as follows:

vpdn enable

vpdn multihop

pseudowire-class DEFUALT

encapsulation l2tpv2

protocol l2tpv2 l2-class-1

ip local interface Fastethernet4

interface Fastethernet4

ip address dhcp

ip nat outside

interface Virtual-PP1

ip address negotiated

ip nat outside

ip virtual-reassembly

ip tcp adjuct-mss 1460

load-interval 30

ppp authentication chap callin

ppp chap hostname ****

ppp chap password ***

pseudowire 172.16.16.132 1 pw-class DEFAULT

ip nat inside source route-map PERFORM-NAT interface virtual-PP1 overload

ip route 0.0.0.0 0.0.0.0 virtual-PPP1

ip route 172.16.16.132 255.255.255.255 Fastethernet4 dhcp

ip acccess-list extended NAT

permit ip any any

route-map PERFROM-NAT permit 10

match ip address NAT

Please help as Vitual-PPP1 is DOWN.

[Giuseppe Larosa]

Hello Ralema,

remove ip nat outside on fas4 interface just to start

then  verify if virtual-pp1 comes up

write the NAT acl to exclude from translation L2TPv2 communication between fas4 and LNS  172.16.16.132

ip access-list extended NAT

deny ip any host 172.16.16.132

permit ip any any

Hope to help

Giuseppe