Why cisco router drops the second ping ...

[Vlad Olteanu]

Hi guys,

I am looking to find the reason on why the cisco routers always drop teh second ping in the last traceroute packet.

Just curious to find out  , so if anyone knows the explanation ....would very much appreciate to know.

Thank you!

Regards,

Vlad

[Reza Sharifi]

Vlad,

You should not see any drop ping if everything is configure correctly and if there is no access list blocking ping.

Can you provide more info as to what you are pinging and what the network looks like?

HTH

Reza

[margalla · Accepted solution]

It's because Cisco routers rate limit ICMP unreachables.

See:

Using the traceroute Command on Operating Systems

http://www.cisco.com/en/US/tech/tk364/technologies_tech_note09186a00801ae32a.shtml

[Vlad Olteanu]

Thanks guys!

Cisco routers always drops the second ping in the last traceroute regardless of your configuration, I was actually doing some lab setup and I could not understand this.

After that I went through some videos on BGP and there the guy was saying the same thing.

Thank you all for the reply!

Regards,

Vlad