07-04-2002 04:09 AM - edited 03-01-2019 11:33 PM
Hi all,
I am having multiple internet providers and running BGP with all of them.
Traceroute packets are ping packets with incrementing TTL value. I can know the forward path from my client to the destination i.e ping request path. But i am wanting to know the ping reply path i.e the reverse path from the remote client to reach to me. Elaborately, i want to know the reply is coming through which of my internet provider.
Thanks in advance..
Regards...
--Ashok.
07-04-2002 10:34 PM
There is no reverse traceroute you can do.
Only way to check is "debug ip packet detail"; which ingress interface the packet arrived to you, in that way you know which ISP path did it take to enter your router.
eg;
ping reply packet from source 10.64.79.41 below is entering my router using ingress interface FastEthernet0.
2d00h: IP: s=10.66.79.41 (FastEthernet0), d=111.111.111.111, len 100, rcvd 4
2d00h: ICMP type=8, code=0
2d00h: IP: s=111.111.111.111 (local), d=10.66.79.41 (FastEthernet0), len 100, sending
HTH
R/Yusuf
07-04-2002 11:03 PM
There is no reverse msg traceroute.
But why not use a agent capturer at remote site LAN and grab the icmp reply
packets sourced from remote site?
07-09-2002 04:53 AM
Hi.
You can try to use the "record route" option.
Hope this helps.
NM
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