The Journey of a Network Engineer

Oct 12 2011   12:31AM GMT

How to Insure End to end connectivity in Frame-Relay

Sulaiman Syed Profile: Sulaiman Syed

This is one of the nice features that i just discovered yesterday. It is the ability to make sure an end-to-end frame-relay connectivity between Cisco routers.

In the local router, we can see the PVC status.

Rack1R3#show frame-relay pvc

PVC Statistics for interface Serial1/0 (Frame Relay DTE)

Active     Inactive      Deleted       Static

Local          1            0            0            0

Switched       0            0            0            0

Unused         3            0            0            0

Now, although it is showing active in this side. It doesn’t really mean it is active at the other end. Multiple ISP, or networks can be between the two routers. So, let’s see how to insure the end to end frame relay connectivity. Do the following configurations as shown…
Rack1R3#conf t
Rack1R3(config)#map-class frame-relay END-END
Rack1R3(config-map-class)#frame-relay end-to-end keepalive mode bidirectional
Rack1R3(config-map-class)#exit
Rack1R3(config)#int serial 1/0.1
Rack1R3(config-subint)#frame-relay class END-END
Rack1R3(config-subint)#end
Rack1R3#
Now, a similar configurations should be done on the other end. What we are doing is creating a map-class for frame-relay. Enabling keepalive in bidirectional mode. Then applying this map-class into the required interface, or sub-interface. Lets see the out put of this command.
Rack1R3#show frame-relay end-to-end keepalive
End-to-end Keepalive Statistics for Interface Serial1/0 (Frame Relay DTE)
DLCI = 305, DLCI USAGE = LOCAL, VC STATUS = ACTIVE (EEK UP)
SEND SIDE STATISTICS
Send Sequence Number: 34,       Receive Sequence Number: 35
Configured Event Window: 3,     Configured Error Threshold: 2
Total Observed Events: 37,      Total Observed Errors: 0
Monitored Events: 3,            Monitored Errors: 0
Successive Successes: 3,        End-to-end VC Status: UP
RECEIVE SIDE STATISTICS
Send Sequence Number: 34,       Receive Sequence Number: 33
Configured Event Window: 3,     Configured Error Threshold: 2
Total Observed Events: 36,      Total Observed Errors: 0
Monitored Events: 3,            Monitored Errors: 0
Successive Successes: 3,        End-to-end VC Status: UP
From the output. it is seen that the end to end status of VC is UP.

 Comment on this Post

 
There was an error processing your information. Please try again later.
Thanks. We'll let you know when a new response is added.
Send me notifications when other members comment.

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Forgot Password

No problem! Submit your e-mail address below. We'll send you an e-mail containing your password.

Your password has been sent to: