CCIE Pursuit Blog

January 12, 2008

Internetwork Expert Volume II: Lab 4 – Section 2

Section 2 – Frame Relay – 6 Points

2.1 Hub-and-Spoke

Basic Hub-and-Spoke with the spokes using subinterfaces and the hub using the physical interface.

I found my third error during this task (interfaces swapped on r2).

The IE solution guide has “no frame-relay inverse-arp” configured under the physical interfaces on r1 and r3.  This is unnecessary.

2.2 Point-To-Point

Another easy Frame Relay configuration.  The only twist is that instead of giving you a series of subtasks, you are asked to configure Frame Relay to match the output of the “show frame map” command on r4 and r5.  Of course, IE already has Frame Relay running with Inverse-ARP enabled, so your initial Frame maps will be a mess:

r4#sh frame map
Serial0/0 (up): ip 141.1.54.5 dlci 405(0x195,0x6450), dynamic,
              broadcast,, status defined, active
Serial0/0 (up): ip 141.1.123.1 dlci 401(0x191,0x6410), dynamic,
              broadcast,
              CISCO, status defined, active
Serial0/0 (up): ip 141.1.123.2 dlci 402(0x192,0x6420), dynamic,
              broadcast,, status defined, active

2.3 Point-To-Point

Another simple Frame Relay configuration.

“Do not allow r6 to send Frame Relay Inverse-ARP requests out this interface for any protocol.”

In short, “no frame-relay inverse-arp”  🙂
 

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