Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win


Suspect Switch

Posted on 2010-09-09
Medium Priority
Last Modified: 2012-05-10
Hi guys
This could be a little nieve but there is a slight possibility that a switch on our network is faulty. Here are the event logs below
1 10-Sep-2010 08:54:57  %STP-W-PORTSTATUS: 1:19: STP status Forwarding  Warning
2 10-Sep-2010 08:54:27  %LINK-I-Up: 1:19  Info
3 10-Sep-2010 08:54:25  %LINK-W-Down: 1:19  Warning
4 10-Sep-2010 08:54:23  %LINK-I-Up: 1:19  Info
5 10-Sep-2010 08:54:21  %LINK-W-Down: 1:19  Warning
6 10-Sep-2010 08:40:38  %STP-W-PORTSTATUS: 1:27: STP status Forwarding  Warning
7 10-Sep-2010 08:40:31  %STP-W-PORTSTATUS: 1:33: STP status Forwarding  Warning
8 10-Sep-2010 08:40:08  %LINK-I-Up: 1:27  Info
9 10-Sep-2010 08:40:05  %LINK-W-Down: 1:27  Warning
10 10-Sep-2010 08:40:01  %LINK-I-Up: 1:33  Info
11 10-Sep-2010 08:39:59  %LINK-W-Down: 1:33  Warning
12 10-Sep-2010 08:39:52  %LINK-I-Up: 1:27  Info
13 10-Sep-2010 08:39:34  %STP-W-PORTSTATUS: 1:33: STP status Forwarding  Warning
14 10-Sep-2010 08:39:29  %LINK-W-Down: 1:27  Warning
15 10-Sep-2010 08:39:04  %LINK-I-Up: 1:33  Info
16 10-Sep-2010 08:38:51  %LINK-W-Down: 1:33  Warning
17 10-Sep-2010 08:37:46  %STP-W-PORTSTATUS: 1:27: STP status Forwarding  Warning
18 10-Sep-2010 08:37:41  %STP-W-PORTSTATUS: 1:33: STP status Forwarding  Warning
19 10-Sep-2010 08:37:16  %LINK-I-Up: 1:27  Info
20 10-Sep-2010 08:37:11  %LINK-I-Up: 1:33  Info
21 10-Sep-2010 08:37:09  %LINK-W-Down: 1:33  Warning
22 10-Sep-2010 08:30:24  %STP-W-PORTSTATUS: 1:33: STP status Forwarding  Warning
23 10-Sep-2010 08:29:54  %LINK-I-Up: 1:33  Info
24 10-Sep-2010 08:26:42  %STP-W-PORTSTATUS: 2:28: STP status Forwarding  Warning
25 10-Sep-2010 08:26:12  %LINK-I-Up: 2:28  Info
26 10-Sep-2010 08:26:09  %LINK-W-Down: 2:28  Warning
27 10-Sep-2010 08:25:50  %STP-W-PORTSTATUS: 2:28: STP status Forwarding  Warning
28 10-Sep-2010 08:25:34  %STP-W-PORTSTATUS: 2:27: STP status Forwarding  Warning
29 10-Sep-2010 08:25:20  %LINK-I-Up: 2:28  Info
30 10-Sep-2010 08:25:17  %LINK-W-Down: 2:28  Warning
31 10-Sep-2010 08:25:16  %LINK-I-Up: 2:28  Info
32 10-Sep-2010 08:25:14  %LINK-W-Down: 2:28  Warning
33 10-Sep-2010 08:25:13  %LINK-I-Up: 2:28  Info
34 10-Sep-2010 08:25:04  %LINK-I-Up: 2:27  Info
35 10-Sep-2010 08:25:01  %LINK-W-Down: 2:27  Warning
36 10-Sep-2010 08:24:27  %STP-W-PORTSTATUS: 2:27: STP status Forwarding  Warning
37 10-Sep-2010 08:23:57  %LINK-I-Up: 2:27  Info
38 10-Sep-2010 08:23:54  %LINK-W-Down: 2:27  Warning
39 10-Sep-2010 08:14:39  %STP-W-PORTSTATUS: 1:23: STP status Forwarding  Warning
40 10-Sep-2010 08:14:09  %LINK-I-Up: 1:23  Info
41 10-Sep-2010 08:14:07  %LINK-W-Down: 1:23  Warning
42 10-Sep-2010 08:14:07  %LINK-I-Up: 1:23  Info
43 10-Sep-2010 08:09:39  %STP-W-PORTSTATUS: 2:1: STP status Forwarding  Warning
44 10-Sep-2010 08:09:09  %LINK-I-Up: 2:1  Info
45 10-Sep-2010 08:09:07  %LINK-W-Down: 2:1  Warning
46 10-Sep-2010 08:08:56  %LINK-I-Up: 2:1  Info
47 10-Sep-2010 08:08:53  %LINK-W-Down: 2:1  Warning
48 10-Sep-2010 08:08:53  %LINK-I-Up: 2:1  Info
49 10-Sep-2010 08:05:43  %STP-W-PORTSTATUS: 1:10: STP status Forwarding  Warning
50 10-Sep-2010 08:05:13  %LINK-I-Up: 1:10  Info
51 10-Sep-2010 08:05:11  %LINK-W-Down: 1:10  Warning
52 10-Sep-2010 07:54:43  %STP-W-PORTSTATUS: 1:43: STP status Forwarding  Warning
53 10-Sep-2010 07:54:13  %LINK-I-Up: 1:43  Info
54 10-Sep-2010 07:54:10  %LINK-W-Down: 1:43  Warning
55 10-Sep-2010 07:51:24  %STP-W-PORTSTATUS: 1:43: STP status Forwarding  Warning
56 10-Sep-2010 07:50:54  %LINK-I-Up: 1:43  Info
57 10-Sep-2010 07:50:52  %LINK-W-Down: 1:43  Warning
58 10-Sep-2010 07:50:51  %STP-W-PORTSTATUS: 2:10: STP status Forwarding  Warning
59 10-Sep-2010 07:50:21  %LINK-I-Up: 2:10  Info
60 10-Sep-2010 07:50:14  %LINK-W-Down: 2:10  Warning
61 10-Sep-2010 07:49:29  %STP-W-PORTSTATUS: 2:10: STP status Forwarding  Warning
62 10-Sep-2010 07:48:59  %LINK-I-Up: 2:10  Info
63 10-Sep-2010 07:48:56  %LINK-W-Down: 2:10  Warning
64 10-Sep-2010 07:45:08  %STP-W-PORTSTATUS: 2:45: STP status Forwarding  Warning
65 10-Sep-2010 07:44:38  %LINK-I-Up: 2:45  Info
Is this normal?
Question by:P3admin
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
LVL 21

Expert Comment

ID: 33645985
It looks like it is just notifications of various ports going up or down and the subsequent Spanning Tree  changes as that happens.
It is most likely not an issue but if it was happening constanly/frequently on the same port or something like that it could be point to something to investigate further. In this case it is happening over about an hour's time and on a couple of ports.
LVL 57

Expert Comment

ID: 33646209
I agree with Rick_O_Shay.

They all appear to be in the morning.  Maybe about the time I would assume people are coming in and possibly booting their PC's up.
LVL 40

Expert Comment

ID: 33647034
You might be able to disable spanning tree (set port in portfast or something like that) if only a single system is connected to a port.
(Not if there is a HUB/Switch connected to a port).
LVL 79

Expert Comment

ID: 33651126
What kind of switch? Be specific with make/model number..
Are you experiencing issues that you are trying to troubleshoot? If yes, what issues are you seeing?
Otherwise, generically speaking, these look like benign link up/down messages that we see all day long when users power off/up PC's.  
LVL 16

Accepted Solution

Aaron Street earned 2000 total points
ID: 33661466
mutiply link up-downs on a singel interface can be a sign of the PC changing the speed of its NIC.

Moden PC's when reciving will set theNIC to 10mbs, so wake on lan packets can be recived but as a way of power saving. Then once the PC actuly boots it switchs to 100mbs. this can show up on switchs as a port updown warning.

I knwo on cisco switchs you can disable this so you dont get these reports. (under the interface you can do a "#no link-state notification" i think it the command. The alternitive way is to incress the time out for detecting a port down. however as these are clinet ports you are expecting them to go down at the end of the day so it is safe to disable these warnings.

Port updown warning are usefull for servers, where you can set up an syslog alert.

The STP forwarding is jsut showing that the interface has gone through STP and has become a forwarding port. As other have said you really want to enable port-fast on these ports. this will prevent the 30+second delay before data starts to flow.

No problems here jsut standard messages. you can safely ignore them or make a few config tweaks to prevent them showing.

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

I see many questions here on Experts Exchange regarding switch port configurations and trunks. This article is meant for beginners in the subject to help to get basic knowledge about Virtual Local Area Network (VLAN (http://en.wikipedia.org/wiki/Vir…
As dyndns has reduced the capabilities of the free service, I looked around for other free providers of Dynamic DNS service. After testing several I decided to move my DNS hosting to Hurricane Electric as then domains that require dynamic hostnam…
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…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…
Suggested Courses

618 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