Possible Problem

Solution

Addressing problem between CIP and host

Step 1 Verify that the CLAW connection is up by checking the output of the show extended channel slot/port statistics exec command on the router.

Step 2 If the output shows that CLAW connections are not up (indicated by a N), refer to the section "CIP: CLAW Connection Does Not Come Up" earlier in this chapter.

Step 3 If the CLAW connections are up (indicated by a Y), issue the clear counters privileged exec command. Then attempt a basic ping to the host from the router or to the router from the host.

Step 4 When the ping is completed, use the show extended channel slot/port statistics exec command on the router.

If you issued the ping from the router to the host, the host should have read five 100-byte ICMP echos from the router. The Total Blocks field in the show command output should indicate five blocks read. If the host replied, the output should indicate five blocks written.

If you issued the ping from the host to the router, the host should have sent one 276-byte ICMP echo to the router. The Write field should indicate one block written. If the router replied, the output should indicate one block in the Read field.

Step 5 If this is not the case, there could be an addressing problem between the CIP and the host. Check all IP addresses on the router and in the host TCP/IP profile and make sure they are correct.

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