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New Member

Connected Interface are not pinging


We are connecting a Cisco 1841 router (WIC 1T) to the PE router and running an encapsulation frame-relay.

We are not able to ping between both the devices even though the connectivity is fine. Below are the observations for your reference

a) We have checked the config on the router both the DLCI is up and active still we are not able to ping the PE,

On  troubleshooting the problem, we observed

1) All the LMI status are clean, all the interfaces are up and active.

Yet, from  the routers it wont ping the other ip interfaces of the other PE serial interfaces.

When i do a debug frame packet.. I see the following from the two that dont work :

serial0/0/0.1: broadcast search
serial0/0/0.1: encaps failed for broadcast for link 38(BRIDGE)

Can you please let me know what can be the problem



New Member

Re: Connected Interface are not pinging

Hi Arshad,

What do you mean by "connectivity is fine"? Please elaborate!

Can you please paste the running configuration of your Serial WAN interface, both physical and sub-interface configurations.

Also, please run the following commands:

show frame-relay lmi

show frame-relay map

show frame-relay pvc

There sounds to be some kind of mismatch in configuration between your router and the SP's router, please look at your sub-interface configuration (p2p or p2mp) hit here is in your debugs "serial0/0/0.1:  encaps failed for broadcast for link 38(BRIDGE)".

However, without looking at your configurations its hard to judge, but i'd be double-checking all configurations and confirming with your SP, so both ends match up.



New Member

Re: Connected Interface are not pinging

Hello Joe,

Thanks for your reply. Please find the config  below


This is the current config that is in the operational router , which was online for some time , now its not accessible , the customer might have switched it off .

The same config is applied on the new router cisco :1841

CE#sh ip int brief

Interface                  IP-Address      OK? Method Status                Protocol

FastEthernet0/0       YES NVRAM  up                    up 

Serial0/0                  unassigned      YES NVRAM  up                    up 

Serial0/0.1         YES NVRAM  up                    up 

Serial0/0.1111      YES NVRAM  up                    up 

BRI0/0                     unassigned      YES NVRAM  up                    up 

BRI0/0:1                   unassigned      YES unset  down                  down

BRI0/0:2                   unassigned      YES unset  down                  down

Serial0/1           YES unset  down                  down

Ethernet1/0                unassigned      YES NVRAM  administratively down down

Dialer1             YES NVRAM  up                    up 

Loopback1111       YES NVRAM  up                    up 

CE#sh run int Serial0/0

Building configuration...

Current configuration : 192 bytes


interface Serial0/0

  no ip address

encapsulation frame-relay

no fair-queue

frame-relay traffic-shaping

no frame-relay inverse-arp


CE#sh run int Serial0/0.1

Building configuration...

Current configuration : 308 bytes


interface Serial0/0.1 point-to-point

description --- to PE ****

ip address

rate-limit output 16000 8000 8000 conform-action set-prec-transmit 2 exceed-action set-prec-transmit 2

frame-relay interface-dlci 499 IETF

  class 64ke0

PE config :


interface Serial3/0/1.111 point-to-point

description --- To CE

ip vrf forwarding test

ip address

no ip redirects

no ip proxy-arp

frame-relay interface-dlci 499 IETF

  class 64ke0-wfq

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