Cisco 7604 Configuration Guide - Page 602
Pinging FWSM Interfaces, logging buffer debug, show logging
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Testing Your Configuration Chapter 26 Troubleshooting the Firewall Services Module Step 3 Step 4 You can alternately use logging buffer debug to send messages to a buffer, and then view them later using the show logging command. To send the system log messages to your Telnet or SSH session, enter the following command: hostname(config)# terminal monitor To enable system log messages, enter the following command: hostname(config)# logging enable The following example shows a successful ping from an external host (209.165.201.2) to the FWSM outside interface (209.165.201.1): hostname(config)# debug icmp trace Inbound ICMP echo reply (len 32 id 1 seq 256) 209.165.201.1 > 209.165.201.2 Outbound ICMP echo request (len 32 id 1 seq 512) 209.165.201.2 > 209.165.201.1 Inbound ICMP echo reply (len 32 id 1 seq 512) 209.165.201.1 > 209.165.201.2 Outbound ICMP echo request (len 32 id 1 seq 768) 209.165.201.2 > 209.165.201.1 Inbound ICMP echo reply (len 32 id 1 seq 768) 209.165.201.1 > 209.165.201.2 Outbound ICMP echo request (len 32 id 1 seq 1024) 209.165.201.2 > 209.165.201.1 Inbound ICMP echo reply (len 32 id 1 seq 1024) 209.165.201.1 > 209.165.201.2 The preceding example shows the ICMP packet length (32 bytes), the ICMP packet identifier (1), and the ICMP sequence number (the ICMP sequence number starts at 0 and is incremented each time a request is sent). Pinging FWSM Interfaces To test that the FWSM interfaces are up and running and that the FWSM and connected routers are routing correctly, you can ping the FWSM interfaces. Note You can ping only the closest interface. Pinging the far interface is not supported. To ping the FWSM interfaces, perform the following steps: Step 1 Create a sketch of your single mode FWSM or security context showing the interface names, security levels, and IP addresses. The sketch should also include any directly connected routers, and a host on the other side of the router from which you will ping the FWSM. You will use this information for this procedure as well as the procedure in the "Pinging Through the FWSM" section on page 26-4. For example: 26-2 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM OL-20748-01
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