CCIE Pursuit Blog

February 18, 2008

Internetwork Expert Volume II: Lab 12 – Section 3

Section 3 – Frame Relay – 8 Points

3.1 Hub-and-Spoke

Basic hub and spoke configuration with the additional requirement of turning on CDP.

3.2 Point-To-Point

Very basic configuration.

3.3 Keepalives

This is the first lab where I’ve had to configure Frame Relay End-To-End keepalives.  Time to get my FREEK on.  🙂

Key phrases:

“having r4 and r5 poll each other”
“the other side’s interface is up and reachable every 15 seconds”

frame-relay end-to-end keepalive mode

frame-relay end-to-end keepalive timer

Defaults
Send timer: 10 seconds
Receive timer: 15 seconds

r5(config)#map-class frame KEEPALIVES
r5(config-map-class)#frame end-to-end keepalive mode bidirectional
r5(config-map-class)#frame end-to-end keepalive timer send 15

* Receive timer is 15 by default so we don’t need to configure it.

r5(config-map-class)#int s0/0.54
r5(config-subif)#frame-relay interface-dlci 504
r5(config-fr-dlci)#class KEEPALIVES

Damn my fat fingers.  I accidentally typed a subinterface that did not exist – which brought it into existence  😦

r4(config-map-class)#int s0/0.15
% Incomplete command.

r4(config-subif)#do sh ip int br
Serial0/0.15               unassigned      YES unset  up                    up

r4(config-subif)#no int s0/0.15
Not all config may be removed and may reappear after reactivating the sub-interface

I see a reload in my future.  😦

r4#sh frame end keep

End-to-end Keepalive Statistics for Interface Serial0/0 (Frame Relay DTE)

DLCI = 405, DLCI USAGE = LOCAL, VC STATUS = ACTIVE (EEK UP)

SEND SIDE STATISTICS

Send Sequence Number: 255,      Receive Sequence Number: 255
Configured Event Window: 3,     Configured Error Threshold: 2
Total Observed Events: 1,       Total Observed Errors: 0
Monitored Events: 0,            Monitored Errors: 0
Successive Successes: 0,        End-to-end VC Status: UP

RECEIVE SIDE STATISTICS

Send Sequence Number: 255,      Receive Sequence Number: 255
Configured Event Window: 3,     Configured Error Threshold: 2
Total Observed Events: 1,       Total Observed Errors: 0
Monitored Events: 0,            Monitored Errors: 0
Successive Successes: 0,        End-to-end VC Status: UP

3.4 Point-to-Point

Very basic configuration.

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