Solved

Ping: reply from an intermediate system.

Posted on 2006-06-09
4
288 Views
Last Modified: 2010-03-17
HI,
 
   I'm using RH9.0. I'm getting the bwlow output while pinging  to yahoo.

ping Output:

64 bytes from p15.www.scd.yahoo.com (66.94.230.46): icmp_seq=2038 ttl=49 time=253 ms
64 bytes from p15.www.scd.yahoo.com (66.94.230.46): icmp_seq=2039 ttl=50 time=257 ms
64 bytes from p15.www.scd.yahoo.com (66.94.230.46): icmp_seq=2040 ttl=50 time=264 ms
From if-6-0.core2.PDI-PaloAlto.teleglobe.net (63.243.156.1) icmp_seq=2049 Time to live exceeded
From if-6-0.core2.PDI-PaloAlto.teleglobe.net (63.243.156.1) icmp_seq=2050 Time to live exceeded
From if-6-0.core2.PDI-PaloAlto.teleglobe.net (63.243.156.1) icmp_seq=2051 Time to live exceeded
From Vlan2.msfc1.AEQ-Ashburn.Teleglobe.net (64.86.81.195) icmp_seq=2052 Time to live exceeded
From 59.145.11.70 icmp_seq=2076 Time to live exceeded
64 bytes from p15.www.scd.yahoo.com (66.94.230.46): icmp_seq=2092 ttl=50 time=257 ms
64 bytes from p15.www.scd.yahoo.com (66.94.230.46): icmp_seq=2093 ttl=50 time=256 ms
64 bytes from p15.www.scd.yahoo.com (66.94.230.46): icmp_seq=2110 ttl=49 time=250 ms
64 bytes from p15.www.scd.yahoo.com (66.94.230.46): icmp_seq=2111 ttl=48 time=250 ms


My doubt is, we see a reply from 63.243.156.1 with icmp_seq 2049-2052 and another reply form 59.145.11.70  with icmp_seq 2076 both displaying Time to live exceeded.

Could anyone explain me what exactly happened in the middle?

Thanks,
expertblr
0
Comment
Question by:expertblr
  • 2
  • 2
4 Comments
 
LVL 43

Expert Comment

by:ravenpl
ID: 16868215
Routing in WAN is not static as You used to in LAN. Packets can take different ways.
The simplest scenario is load balancing over two lines, where one of those lines have additional router(or other device) which drops the TTL counter.
0
 

Author Comment

by:expertblr
ID: 16868873
But, I want to know why the TTL was dropped? Any specific reason?
0
 
LVL 43

Accepted Solution

by:
ravenpl earned 125 total points
ID: 16868929
the TTL is dropped (decreased by one) on each router. Possibly on bridge/routing switch also.
If TTL reaches zero, 'Time to live exceeded' is sent back to sender and the packet is dropped.
It's very propable, that routing loop was detected and we avoilded keeping this packed live forever.
0
 

Author Comment

by:expertblr
ID: 16870110
Thank you!!
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I have seen several blogs and forum entries elsewhere state that because NTFS volumes do not support linux ownership or permissions, they cannot be used for anonymous ftp upload through the vsftpd program.   IT can be done and here's how to get i…
Note: for this to work properly you need to use a Cross-Over network cable. 1. Connect both servers S1 and S2 on the second network slots respectively. Note that you can use the 1st slots but usually these would be occupied by the Service Provide…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

860 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question