Slow PING response from 470-487T switch ??

Slow PING response from 470-487T switch ??

NewsGroups | Search | Tools
 comp.dcom.sys.nortel  Post an article  get this group's latest topics as an RSS feed add this group's latest topics to your My MSN content add this group's latest topics to your My Yahoo content  add this group's latest topics to your Google content  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
Slow PING response from 470-487T switch ?? Ron 05-25-2007
Posted by Ron on May 25, 2007, 4:14 pm
If you were  Registered and logged in, you could reply and use other advanced thread options
I've got a 470 stack of 3 switches hooked up to an 8600 via an MLT. I
am running my vlans out to the switches.

I have all my vlans out to my switches but I am having a great lag
when trying to PING by name on my network. If I try to:

PING server it waits and sits for about 13 seconds before it starts
to say Reply From... I then start to get the reply 4 packets <1ms
If I try to ping it again right after I just pinged it, again I get
the 13 or so second lag. All of my DNS info is right on the laptop I
am using. If I browse the internet on this same laptop I get the
pages loaded very quick, no lag.

if I do:
PING 192.168.1.100 (lets say that is servers address) it sends a
reply back right away, no waiting.

When I have to wait for my reply when pinging by name, it picks up the
correct IP address of the device it is pinging.

Any idea what could be causing this and how to fix it?


Posted by Natural Born Cereal Killer on May 25, 2007, 8:31 pm
If you were  Registered and logged in, you could reply and use other advanced thread options

>I have all my vlans out to my switches but I am having a great lag
>when trying to PING by name on my network. If I try to:
>
>PING server it waits and sits for about 13 seconds before it starts
>to say Reply From...

>PING 192.168.1.100 (lets say that is servers address) it sends a
>reply back right away, no waiting.

        that's a DNS problem. My guess is that your workstations
are not registering with a DNS server authoratative for your
local zone, and instead you're using your ISP's DNS servers.
If DNS doesn't work, Windows will resort to broadcasts and
that's pretty inefficient and takes a great amount of time.

So don't worry about the switches. They seem to be fine.

- Dan

* Dan Sorenson DoD #1066 ASSHOLE #35 BOTY 1997 viking@svtv.com *
* Vikings? There ain't no vikings here. Just us honest farmers. *
* The town was burning, the villagers were dead. They didn't need *
* those sheep anyway. That's our story and we're sticking to it. *

Similar ThreadsPosted
cannot ping alteon L4 switch. November 21, 2006, 4:08 am
Nortel 8300 and slow performance after delay September 6, 2007, 12:16 pm
callpilot 1002rp acts slow and stops answering June 4, 2007, 10:03 pm
ad3: no response when one of two servers failed April 19, 2006, 4:46 pm
Interactive Voice Response Systems November 22, 2006, 10:52 am
No response to Nortel CS2000 questions March 17, 2008, 5:53 pm
Can Ping Call Pilot but no access? June 4, 2007, 12:37 pm
Meridian phones "ping" in Nortel OptXX PBXes June 14, 2005, 12:21 pm
Alteon AD4 Web Switch March 9, 2005, 5:59 pm
Switch BayStack 310-24T September 28, 2005, 9:00 pm

other useful resources:
The Federal Communications Commission (FCC)
Telecommunications Industry Association
Electronic and Software Security Products and Services
International Telecommunication Union

Custom CGI Perl and PHP programming by 1-Script.com

Contact Us | Privacy Policy
The site map in XML format XML site map