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554
Views
14
Helpful
5
Replies

Pings on the LAN

Patrick McHenry
Level 4
Level 4

‎09-14-2012 10:31 AM - edited ‎03-07-2019 08:53 AM

I'm pinging different switches from different machines on the network on different VLANS.

Souldn't these responses be of concern?

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=4ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=131ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=81ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=60ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=181ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=5ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=111ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=4ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=125ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=89ms TTL=62

Reply from 172.20.52.9: bytes=32 time=4ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=7ms TTL=62

Reply from 172.20.52.9: bytes=32 time=114ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=6ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=30ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=2ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=200ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=129ms TTL=62

Reply from 172.20.52.9: bytes=32 time=39ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=104ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=4ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=131ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=81ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=60ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=181ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=5ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=111ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=4ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=125ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=89ms TTL=62

Reply from 172.20.52.9: bytes=32 time=4ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=7ms TTL=62

Reply from 172.20.52.9: bytes=32 time=114ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=6ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=30ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=2ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=200ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=129ms TTL=62

Reply from 172.20.52.9: bytes=32 time=39ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=104ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Reply from 172.20.52.9: bytes=32 time=3ms TTL=62

Thanks, Pat.

Labels:
0 Helpful
5 Replies 5

Reza Sharifi
Hall of Fame
Hall of Fame

‎09-14-2012 10:47 AM

Pat,

time=3ms

Usually the time increases when you have load on the interface.  So, I would say the timing fluctuation is ok.

TTL=62

This TTL seems to be very low. The TTL starts from 255 and decrements one going over each hop.  How far (how many hops) these devices are sitting from your laptop or desktop?

HTH

Richard Burts
Hall of Fame
Hall of Fame
In response to Reza Sharifi

‎09-14-2012 11:00 AM

It is not correct to say that TTL always starts at 255. The TTL is set by the OS of the device that sends the packet. And some do start at 255 (which is the maximum value that it can be). But some other OS set the TTL differently. And I have seen fairly often TTL that starts at 64.

HTH

Rick

HTH

Rick

Reza Sharifi
Hall of Fame
Hall of Fame
In response to Richard Burts

‎09-14-2012 11:14 AM

Richard,

When you say, some OS set it to start at 64, what devices are they?

Are you referring to window operating systems?

Thanks,

Reza

Patrick McHenry
Level 4
Level 4
In response to Reza Sharifi

‎09-14-2012 11:28 AM

Nortel/Avaya switch

0 Helpful

Richard Burts
Hall of Fame
Hall of Fame
In response to Reza Sharifi

‎09-14-2012 12:01 PM

Reza

I believe that some Windows PCs may set TTL to 64, though the one that I just pinged set TTL of 48. I did ping a HP Color Laser printer and find its TTL set to 64.

HTH

Rick

HTH

Rick
0 Helpful
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