Wrongly CEF programmed ip addresses in a 6708 module
About half of the clients on a specific subnet got their return traffic dropped in a 6500 when traversing a specific 10G interface in the switch.
After some troubleshooting we run the command "sh mls cef vrf prod" on a 6708 module and discovered that the local CEF table on the 6708 had double entries for some ip addresses. Those IP addresses had one entry in the right vlan/vrf and one entry in a wrong vlan/vrf. The same command on the supervisor did not showed any double entries.
As a quick workaround we did a shut down of vlan interface that should not have those ip addresses. Then all clients started to work again. After that we did a no shut on the interface and the problem was back. Even a removal of the vlan interface and then adding it again got the problem back again.
We do suspect some nasty bug here. We run the old code 12.2(18)SXF15 but are planning to do an upgrade.
Is it possible to clear out the duplicate CEF programmed ip address on the 6708 module by some command on the supervisor or the 6708 module?
Wrongly CEF programmed ip addressed in a 6708 module
You can have a faulty DFC in the 6708. There are some commands but they are engineering commands, not available to the public. You can reload the module without reloading the entire chassis. Give that a try.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.