Channel-misconfig Stp Error Detected On
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Spanning-tree Etherchannel Guard Misconfig
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a Catalyst 3750 and a Catalyst 4507. I was going to join 4 ports together. One from each of the first 4 blades on the 4507. It is good to use several blades to protect against a blade failure. However, when I went to bring up the bundle using LACP, within seconds all bundled ports were shut down and this logging message popped up: %PM-4-ERR_DISABLE: channel-misconfig (STP) error detect on GigabitEthernet1/0/45. I was really stumped as to what was causing this. Google searching did not really return any clear answers. The message was stating that there error was somehow related to Spanning Tree Protocol. I turned on all Spanning Tree debugs and re-enabled just the first port again, but the debugs didn't show anything unusual happening. What was interesting is https://learningnetwork.cisco.com/thread/52259 that this error was only occurring on the 3750, no errors were showing up on the 4507. I double checked the STP root bridge priorities, etc. I started to comb the running-config with a fine toothed comb on the 3750. It was then that I noticed this config towards the top: spanning-tree etherchannel guard misconfig This config intrigued me. I had not noticed it before and I was unclear as to what it might do. I no'd out the command and https://axelilly.wordpress.com/2010/06/21/getting-err-disable/ again tried to bring up just the first interface in the bundle. No cigar, same epic fail. At this point, I saved the config (write me) and reloaded the switch. Once the switch was back up, I again tried to bring the the bundle members, but in reverse order, starting with gi1/0/48 and moving towards gi1/0/45. One by one, they were each able to join the bundle. Finally, I went to bring up the last interface, gi1/0/45. It came up, however the command show etherchannel 2 summary showed that it was in the waiting state. This is indicated by state w. It seemed to stay in waiting for about a minute until it changed to I. The status I indicates that the port is individual and not part of the bundle. I thought that it was strange for gi1/0/45 to go to individual mode. I then traced the cabling from gi1/0/45 on the 3750 to fa3/3 on the 4507. "Now just you wait a sec!" I found that I had accidentally cabled to port fa3/5 instead. This was the wrong port and was not configured to be part of the etherchannel. Wow, so spanning-tree etherchannel guard misconfig Was trying to tell me that I had a mis-cabled port! That's pretty sweet. I did a quick google search on the command and found that essentially it allows EtherChannel to use STP to attempt to find misconfigurations (including messed up cabling). http://www.cisco.com/en/US/docs/switches/lan/cata
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for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to Get Help Ask a Question Ask for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to Get Help Expand Search Submit Close Search Login Join Today Products BackProducts Gigs Live Careers Vendor Services Groups Website Testing Store Headlines Experts Exchange > Questions > Cisco 6500 Errdisable Want to Advertise Here? Solved Cisco 6500 Errdisable Posted on 2013-10-09 Switches / Hubs Networking Protocols Network Architecture 1 Verified Solution 14 Comments 1,365 Views Last Modified: 2014-05-29 I have a Cisco 6513 switch connected over a LACP port channel to a Huawei 9312 swich. The LACP group is 2 10GB fiber optic connections. This link ran fine for 3 months and then started having issues and going into errdisable state. The errdisable log shows it as a channel-misconfig. I have now set the 6513 to recover the link automatically after 30 seconds. I tried to turn off detection for it, however that is not an option for the particular error. Below is my configuration for both sides. There are 2 physical ports in the channel. Does anyone have any thoughts that would cause this to suddenly be a problem? CISCO 6513: interface Port-channel48 description URI-COE-SS1-Po48 switchport switchport trunk encapsulation dot1q switchport trunk allowed vlan 13 switchport mode trunk switchport nonegotiate load-interval 30 mls qos trust dscp interface TenGigabitEthernet13/5 switchport switchport trunk encapsulation dot1q switchport trunk allowed vlan 13 switchport mode trunk switchport nonegotiate load-interval 30 mls qos trust dscp channel-group 48 mode active HUAWEI 9312: interface Eth-Trunk0 description MOU-COR-RS1-PO48 SAN port link-type trunk port trunk allow-pass vlan 13 mode lacp-static interface XGigabitEthernet1/0/0 description MOU-COR-RS1-teX/X/X eth-trunk 0 0 Question by:shanehooton Facebook Twitter LinkedIn Google LVL 28 Best Solution bymikebernhardt Just to clarify: On the Cisco side at least, it does not have to be in trunk mode in order to use multiple links. that's called a port channel in Cisco-speak, but on other platforms including HP, it is Go to Solution 14 Comments LVL 6 Overall: Level 6 Switches / Hubs 5 Network Architecture 2 Message Expert Comment by:gcl_hk2013-10-10 bpdu enable Do you have this command enabled on HUAWEI end? 0 LVL 57 Overall: Level 57 Networking Protocols 18 Switches / Hubs 17 Network Architecture 13 Message Active today Expert Comment by:giltjr2013-10-10 Can you post the exact error from the log? Not that it matters that much, but why are you running in trunk mode if you ar