Simple FR - cannot ping

linuxlover

Very simple FR, trying to set it up. My config is:

R1
int serial0/0
ip address 172.12.123.1 255.255.255.0
encapsulation frame-relay
frame map ip 172.12.123.2 122 broadcast
frame map ip 172.12.123.3 123 broadcast

R2
int serial0/0
ip address 172.12.123.2 255.255.255.0
encapsulation frame-relay
frame map ip 172.12.123.1 221 broadcast
frame map ip 172.12.123.3 221 broadcast

R3
int serial0/0
ip address 172.12.123.3 255.255.255.0
encapsulation frame-relay
frame map ip 172.12.123.1 321 broadcast
frame map ip 172.12.123.2 321 broadcast

Packet Tracer file:
simple FR.pkt download - 2shared (6KB)



I can't ping. Please help me troubleshoot this.

NetworkVeteran

> "I can't ping."

Suppose you are a hired as a network engineer. Is this what you would report?

First, on what device did you enter your ping command, and what specific ping command did you use? Do some ping commands work? There's a huge difference between "All pings fail" and "All pings to/from R3 fail".

Second, have you learned any debug commands that might help you diagnose failed pings?

Clearly describing an issue is often the first step to solving it.