ARP Throttled out packets through LanLink

[jordi.ventura]

Hi,

problem with intercity Lan link extending Vlans (L2) betw. sites. From Telco point of view all is correct. From our, L2 is not working properly.

We made the following test:

flush arp table

debug arp

ping address of the other site

the debug output follows:

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

es3sw01sni#ping 129.39.138.137

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 129.39.138.137, timeout is 2 seconds:

04:42:40: IP ARP: creating incomplete entry for IP address: 129.39.138.137 inter

face Vlan300

04:42:40: IP ARP: sent req src 129.39.138.254 0011.92df.d680,

dst 129.39.138.137 0000.0000.0000 Vlan300

04:42:40: IP ARP throttled out the ARP Request for 129.39.138.137.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Question: Reasons for Throttle out ARP packets ??.

[thomas.chen · Accepted solution]

The below link may help u indertsanding ARP Throttled out packets

http://www.cisco.com/en/US/tech/tk827/tk831/technologies_tech_note09186a0080094303.shtml

[jordi.ventura]

Many thanks,

Very good explanatory document.

Finally, TELCO had a problem in one of his ethernet ports.

Problem solved

[jailong]

I'd like to know all cisco routers work with arp throttle. I've tested it on cat4500, but arp throttle did not work.