INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Member Login

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips now!

Talk With Other Members
Be Notified Of Responses
To Your Posts
Keyword Search
One-Click Access To Your
Favorite Forums
Automated Signatures
On Your Posts
Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

LINK TO THIS FORUM!

Tek-Tips LinkedIn^® Group

Join our
LinkedIn^® Group!

Hook up with past and present colleagues and classmates quickly.

Partner With Us!

"Best Of Breed" Forums Add Stickiness To Your Site

(Download This Button Today!)

Feedback

"...This was the ONLY place that I could find information that I could use to resolve the problem. So thanks once again to member TomSark and the SQL forum!..."

More...

Geography

Where in the world do Tek-Tips members come from?

Click Here To Find Out!

Tek-Tips Shirts!

Get your
Tek-Tips Forums
SWAG here!

Home > Forums > Data Transmission > Communication Protocols > TCP/IP Forum

TTL and Intermediary network devices

Read More Threads Like This One

DrSic (TechnicalUser)

10 Jan 12 16:25

thread581-759360: analyse ping results
Hey Ye'all,

I'm currently taking ccna classes to get prepaired for certification. Today we were discussing the TTL topic and we wondered at what end of a (let's say) router the ttl is decremented, at the incoming interface, the routerprocess or it's outgoing interface? just for the sake of having something to talk about over a cup of coffee...

DrB0b (IS/IT--Management)

11 Jan 12 9:02

"When a router forwards a packet, it MUST reduce the TTL by at least one. If it holds a packet for more than one second, it MAY decrement the TTL by one for each second. This way, Time-to-Live is used as a time count."

(Emphasis mine)

Source: http://www.maxi-pedia.com/time+to+live
(that line is towards the bottom of the page in the paragraph titled "Time-to-Live: Does it measure time or hops?"

"You don't know what you got, till its gone..
80's hair band Cinderella or ode to data backups???"

DrSic (TechnicalUser)

11 Jan 12 11:33

Thanks DrBOb, The 'time'-thing hadn't come up but will surely be discussed. IT Gives a new dimension to the topic in class.

DrB0b (IS/IT--Management)

11 Jan 12 11:49

No Problem DrSic,
I got a Bachelors from SIU here in IL and I don't remember ever going over the Time aspect of it, only the Hops. Maybe I wasn't paying attention that day...........

If you get stumped or looking for a good discussion topic, just bounce a post here as there are many good minds here willing to help.

"You don't know what you got, till its gone..
80's hair band Cinderella or ode to data backups???"

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Back To Forum

Back To TCP/IP