Frame-Relay Inverse arp issue.

From: Melwani, Manoj J (melwanim@citigroup.com)
Date: Mon May 16 2005 - 02:26:00 GMT-3

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Guys I'm new to the group. I'm preparing for my lab exam and I have a CCIE lab in my house.
While doing IE Vol1 lab 2 Frame-Relay Excersice 2.1 and 2.2 I came accross some issues with inverse arp which I have explained it below.

I cannot see dynamic mapping from R1 to R4 and R4 to R1.

All other dynamic mappings beteen R1,R2,R3 and R4 are working fine.

When I configure static mapping between R1 and R4 it works fine.

Then when I removed the static mapping and waited few sec and I saw

that my dynamic mapping between R1 to R4 and R4 to R1 started working fine.

Can someone tell me why do you think I'm having this kind of prob?

Here is an output from my frame relay switch

Sh ip route on my Frame Relay switch:

Serial1 102 Serial2 201 active
Serial1 103 Serial3 301 active
Serial1 104 Serial5 401 active
Serial1 105 Serial6 501 active
Serial1 113 Serial4 311 active
Serial2 201 Serial1 102 active
Serial2 203 Serial3 302 active
Serial2 204 Serial5 402 active
Serial2 205 Serial6 502 active
Serial2 213 Serial4 312 active
Serial3 301 Serial1 103 active
Serial3 302 Serial2 203 active
Serial3 304 Serial5 403 active
Serial3 305 Serial6 503 active
Serial4 311 Serial1 113 active
Serial4 312 Serial2 213 active
Serial4 314 Serial5 413 active
Serial4 315 Serial6 513 active
Serial5 401 Serial1 104 active
Serial5 402 Serial2 204 active
Serial5 403 Serial3 304 active
Serial5 405 Serial6 504 active
Serial5 413 Serial4 314 active
Serial6 501 Serial1 105 active
Serial6 502 Serial2 205 active
Serial6 503 Serial3 305 active
Serial6 504 Serial5 405 active
Serial6 513 Serial4 315 active

Here is my physical connection between Routers and Frame Relay switch.

R1 (Serial0/0) connected to FR (Serial1)
R2 (Serial0/0) connected to FR (Serial2)
R3 (Serial1/0) connected to FR (Serial3)
R3 (serial1/1) connected to FR (Serial4)
R4 (serial0/0) connected to FR (Serial5)
R5 (serial0/0) connected to FR (serial6)

Router 1,2,4,5 are running IOS 12.2(15)T14.
Router 3 is running IOS 12.2(15)T15.

Thanks,
Manoj. J. Melwani

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