Solved

3750G stack intermittent issues

Posted on 2010-09-09
2
968 Views
Last Modified: 2012-06-22
this morning the switch had no lights on any of the ports - it seems to have hung somehow
one of my colleagues rebooted it before I can check the console and now I've noticed that every few seconds the link state is changing - is that normal?
Sep  9 08:51:02: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state DOWN

Sep  9 08:51:03: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state UP

Sep  9 08:51:04: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state DOWN

Sep  9 08:51:05: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state UP

Sep  9 08:51:36: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state DOWN

Sep  9 08:51:37: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state UP

Sep  9 08:51:51: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state DOWN

Sep  9 08:51:52: %STACKMGR-4-STACK_LINK_CHANGE: Stack Port 2 Switch 1 has changed to state UP

Open in new window

0
Comment
Question by:gddl630
2 Comments
 
LVL 17

Accepted Solution

by:
Kvistofta earned 250 total points
ID: 33635466
No, this is not normal. You have problem with either switch1 hardware or the cable connected to port 2 switch 1. I would first replace the stack cable to see if this resolves the problem, next replace the switch.

/Kvistofta
0
 
LVL 10

Assisted Solution

by:ngravatt
ngravatt earned 250 total points
ID: 33636645
I agree.  Sounds like a faulty piece of hardware. You could always trunk a port on one of the Gig interfaces of each switch to provide connectivity for the time being if you don't have another cable/switch laying around.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

There are two basic ways to configure a static route for Cisco IOS devices. I've written this article to highlight a case study comparing the configuration of a static route using the next-hop IP and the configuration of a static route using an outg…
Creating an OSPF network that automatically (dynamically) reroutes network traffic over other connections to prevent network downtime.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

920 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

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now