Following problem: I configured VRF-lite on Catalyst 3750x. Its working fine but now i have a strange behavior. If a Device, who is connected to the switch has to be replaced and the new device has the same fix IP address as the old one, the device is unrechable. The age Time in the arp table points to the replacement time but the mac address is still the old one.
show arp vrf xxx
Protocol Address Age (min) Hardware Addr Type Interface Internet 172.19.3.201 33 xxxx.xxxx.3112 ARPA Vlanxxx
ping vrf xxx 172.19.3.201 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.19.3.201, timeout is 2 seconds: ..... Success rate is 0 percent (0/5)
To resolve the problem:
clear arp-cache vrf xxx 172.19.3.201
show arp vrf xxx Protocol Address Age (min) Hardware Addr Type Interface Internet 172.19.3.201 2 xxxx.xxxx.194f ARPA Vlanxxx
ping vrf xxx 172.19.3.201 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.19.3.201, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/9 ms
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.