09-15-2008 09:03 AM - edited 03-03-2019 11:33 PM
Hi,
I have connected two cisco 878 back to back and can ping between routers when I assign an IP address to the dialer interface.
I am testing out bridging over the dialer interfaces and have no connectivity. Here is the relevant config. What am I missing
SITE 1
----------
controller DSL 0
mode atm
line-term cpe
line-mode 2-wire line-zero
dsl-mode shdsl symmetric annex A
line-rate auto
interface ATM0
no ip address
no atm ilmi-keepalive
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
bridge-group 1
interface Dialer0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
encapsulation ppp
ip route-cache flow
dialer pool 1
dialer-group 1
no cdp enable
bridge-group 1
interface Vlan1
description *** Management ***
ip address 192.168.1.2 255.255.255.0
dialer-list 1 protocol ip permit
bridge 1 protocol ieee
SITE 2
------------
controller DSL 0
mode atm
line-term co
line-mode 2-wire line-zero
dsl-mode shdsl symmetric annex A
line-rate auto
interface ATM0
no ip address
no atm ilmi-keepalive
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
bridge-group 1
interface Dialer0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
encapsulation ppp
ip route-cache flow
dialer pool 1
dialer-group 1
no cdp enable
bridge-group 1
interface Vlan1
description *** Management ***
ip address 192.168.1.1 255.255.255.0
dialer-list 1 protocol ip permit
bridge 1 protocol ieee
Solved! Go to Solution.
09-16-2008 07:01 AM
Hello Chris,
in this kind of config the dialer is not needed
I would do the following:
remove any reference to the dialer in the atm0 interface
change the pvc 8/35 encapsulation to
enc aal5snap
and retry probably the ppp session is not coming up and so it is disturbing.
Hope to help
Giuseppe
09-15-2008 10:54 AM
Hello Paul,
what is missing here are the lan segments that should take part in the bridge.
you can try this:
int vlan 1
no ip address
bridge-group 1
int BVI1
ip address 192.168.1.2 255.255.255.0
bridge 1 route ip
I'm not sure if this is supported on this platform but the idea of bridging is this you create a virtual lan bridge between the two lans at the two sites but each router provides two arms the lan segment and the wan segment.
However, routing is to be preferred in a production network for several reasons including performance, broadcast control and security.
Hope to help
Giuseppe
09-15-2008 11:40 AM
Thanks Giuseppe,
I will try it and let you know how I make out. Routing works, but the customer is just trying to extend their LAN over Cat3.
09-15-2008 12:13 PM
Hi Giuseppe,
I added those commands to my existing configs, but still cannot ping between routers.
Here is output of sh bridge group from one of the routers
SHP-CO-RTR#sh bridge group
Bridge Group 1 is running the IEEE compatible Spanning Tree protocol
Port 14 (Vlan1) of bridge group 1 is forwarding
Port 16 (ATM0 RFC 1483) of bridge group 1 is forwarding
Port 17 (Dialer0) of bridge group 1 is forwarding
From a laptop connected to one of the router, i can ping the router but not across to the other side.
Any ideas are welcome.
Chris
09-16-2008 07:01 AM
Hello Chris,
in this kind of config the dialer is not needed
I would do the following:
remove any reference to the dialer in the atm0 interface
change the pvc 8/35 encapsulation to
enc aal5snap
and retry probably the ppp session is not coming up and so it is disturbing.
Hope to help
Giuseppe
09-16-2008 10:44 AM
Thanks Giuseppe,
The changes worked.
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