Troubleshooting guide

13-16
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 13 Troubleshooting ATM Router Module Connections
Troubleshooting LANE Clients on ATM Router Module Connections
IPX routing off bridging off
Appletalk routing off
In Encapsulation:
ICMP Redirect enabled Unreachable enabled
IP Multicast disabled: ttl-threshold: 0
LECID - 0, Multicast Send VC - 0
Check the following:
• Broute VC field status is up.
• Note the Broute VC number. In this example, the Broute VC is “67.”
• IP routing is on.
Step 9 Use the show ip cef command to verify that routes and attached devices appear in the table correctly and
point to the correct next hop or outgoing interface.
Switch# show ip cef 128.250.0.1
128.250.0.1/32, version 90, connected, cached adjacency 128.250.0.1
0 packets, 0 bytes
via 128.250.0.1, ATM10/0/0.1, 0 dependencies
next hop 128.250.0.1, ATM10/0/0.1, valid cached adjacency
Step 10 Use the show epc ip-address command with the IP address of the egress interface to display the status
of the MAC address rewrite and the VCI number.
Switch# show epc ip-address interface atm 10/0/0 128.250.0.1
IPaddr: 128.250.0.1 MACaddr: 0000.0c07.ac01 Routed to VC(940)
Check the Routed to VC field (in this example, the VC is “940”). The value is used in the next step.
Step 11 Use the show atm vc traffic interface atm command with the VPI and VCI parameters to see the receive
and transmit cell counts.
Switch# show atm vc traffic interface atm 10/0/0 0 940
Interface VPI VCI Type rx-cell-cnts tx-cell-cnts
ATM10/0/0 0 940 SVC 18 25
Step 12 Use the ping command to confirm the connection and increment the receive and transmit cell counts.
Switch# ping 128.250.0.1
Sending 5, 100-byte ICMP Echos to 128.250.0.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
Step 13 Again, use the show atm vc traffic interface atm command with the VPI and VCI parameters, to
confirm that the receive and transmit cell counts are incrementing.
Switch# show atm vc traffic interface atm 10/0/0 0 940
Interface VPI VCI Type rx-cell-cnts tx-cell-cnts
ATM10/0/0 0 940 SVC 33 40
If you determine that the interface is configured incorrectly, refer to the “Configuring ATM Router
Module Interfaces” chapter in the ATM Switch Router Software Configuration Guide.