08-09-2007 06:44 PM - edited 03-03-2019 06:16 PM
Dear Community
After added vlan 634 to CoreSwitch1 (CatOS6509), the ethernet channel ports on CoreSwitch1 were disabled due to errors (pls see the log below).
CoreSwitch1>
2007 Aug 08 10:29:31 AEST +10:00 %SPANTREE-2-CHNMISCFG: STP loop - channel 5/1-2 is disabled in vlan/instance 634
2007 Aug 08 10:29:31 AEST +10:00 %SPANTREE-2-CHNMISCFG2: BPDU source mac addresses: 00-09-12-60-d4-44, 00-11-93-38-fd-c9
2007 Aug 08 10:29:31 AEST +10:00 %ETHC-5-PORTFROMSTP:Port 5/1 left bridge port 5/1-2
2007 Aug 08 10:29:32 AEST +10:00 %DTP-5-NONTRUNKPORTON:Port 5/1 has become non-trunk
2007 Aug 08 10:29:32 AEST +10:00 %ETHC-5-PORTFROMSTP:Port 5/2 left bridge port 5/1-2
2007 Aug 08 10:29:32 AEST +10:00 %DTP-5-NONTRUNKPORTON:Port 5/2 has become non-trunk
2007 Aug 08 10:43:15 AEST +10:00 %DTP-5-TRUNKPORTON:Port 5/1 has become dot1q trunk
2007 Aug 08 10:43:19 AEST +10:00 %DTP-5-TRUNKPORTON:Port 5/2 has become dot1q trunk
2007 Aug 08 10:43:21 AEST +10:00 %ETHC-5-PORTTOSTP:Port 5/1 joined bridge port 5/1-2
2007 Aug 08 10:43:24 AEST +10:00 %ETHC-5-PORTTOSTP:Port 5/2 joined bridge port 5/1-2
I did check the config of the ethernet channel, it seems fine to me.
Any idea what caused that?
Pls help.....
kelvin Cheung
08-10-2007 03:59 AM
Throughout my experience with etherchannels, they are sometimes very sensitive to changes and go into error mode.
Disabling and reenabling interface solves the problem, but we control which VLANs propagate through it using "switchport trunk allowed vlan XXX,YYY,ZZZ" command.
Please post ethchannel configs of both sides.
08-12-2007 04:11 PM
Thank you for your help, Pls see the config below:
CoreSwitch1> (enable)
#port channel
set port channel 5/1-2 5
#channelprotocol
set channelprotocol pagp 5
#channelprotocol
set channelprotocol pagp 5
!
#port channel
set port channel 5/1-2 5
set port channel 5/1-2 mode desirable silent
CoreSwitch1> (enable) sh port channel
Port Status Channel Admin Ch
Mode Group Id
----- ---------- -------------------- ----- -----
5/1 connected desirable silent 5 1666
5/2 connected desirable silent 5 1666
Port Device-ID Port-ID Platform
----- ------------------------------- ------------------------- ----------------
5/1 SMG0828A5YX(HTCUDCS2) 2/2 WS-C6509
5/2 SMG0828A5YX(HTCUDCS2) 1/2 WS-C6509
CoreSwitch1> (enable)
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
CoreSwitch2> (enable)
#channelprotocol
set channelprotocol pagp 2
!
#port channel
set port channel 1/2,2/2 2
set port channel 1/2-4,1/6-24 mode auto silent
set port channel 2/2-4,2/6-24 mode auto silent
CoreSwitch2> (enable)
CoreSwitch2> (enable) sh port channel
Port Status Channel Admin Ch
Mode Group Id
----- ---------- -------------------- ----- -----
1/2 connected auto silent 2 1665
2/2 connected auto silent 2 1665
----- ---------- -------------------- ----- -----
9/1 connected on 102 1666
9/2 connected on 102 1666
9/3 connected on 102 1666
9/4 connected on 102 1666
Port Device-ID Port-ID Platform
----- ------------------------------- ------------------------- ----------------
1/2 SCA052002DL(HTCUDCS1) 5/2 WS-C6509
2/2 SCA052002DL(HTCUDCS1) 5/1 WS-C6509
----- ------------------------------- ------------------------- ----------------
9/1
9/2
9/3
9/4
08-10-2007 04:03 AM
Hi,
When doing the configuration, if it is done only on one side (misconfig) it will be err-disabled to prevent any spanning tree loops, and accordingly it is recommended to shutdown the interfaces before doing the configuration. The above feature can be controlled via the "spanning-tree etherchannel guard misconfig" command.
HTH,
Mohammed Mahmoud.
08-12-2007 07:25 PM
All ports in an etherchannel group need to have the same attributes i.e. configuration has to be identical to avoid etherchannel or STP issues. One method to avoid etherchannel misconfiguration from impacting the network is to configure 'spanning-tree etherchannel guard misconfig' (as suggested by Mohammed) and this would disable the port(s) when any misconfiguration is detected.
HTH
Sundar
08-12-2007 07:42 PM
Dear Sundar
Pls see the show version below, I do'nt think I have the 'spanning-tree etherchannel guard misconfig' in CATOS version,
Thank a lots......
CoreSwitch2> (enable) sh ver
WS-C6509 Software, Version NmpSW: 8.3(5)
Copyright (c) 1995-2004 by Cisco Systems
NMP S/W compiled on Dec 13 2004, 18:18:52
System Bootstrap Version: 8.1(3)
System Web Interface Version: Engine Version: 5.3.4 ADP Device: Cat6000 ADP Version: 6.0 ADK: 40
System Boot Image File is 'bootflash:cat6000-sup720cvk9.8-3-5.bin'
System Configuration register is 0x2102
Hardware Version: 3.0 Model: WS-C6509 Serial #: SMG0828A5YX
PS1 Module: WS-CAC-2500W Serial #: ART0825E192
PS2 Module: WS-CAC-2500W Serial #: ART0825E18V
Mod Port Model Serial # Versions
--- ---- ------------------- ----------- --------------------------------------
1 24 WS-X6724-SFP SAL08280DKQ Hw : 2.1
Fw : 8.3(5)
Sw : 8.3(5)
WS-F6700-CFC SAD082705EF Hw : 2.0
Sw :
2 24 WS-X6724-SFP SAL08280DKC Hw : 2.1
Fw : 8.3(5)
Sw : 8.3(5)
WS-F6700-CFC SAD082705JL Hw : 2.0
Sw :
3 48 WS-X6748-GE-TX SAL09148MPA Hw : 2.2
Fw : 8.3(5)
Sw : 8.3(5)
WS-F6700-CFC SAL09148HY8 Hw : 2.0
Sw :
4 48 WS-X6748-GE-TX SAL09148J38 Hw : 2.2
Fw : 8.3(5)
Sw : 8.3(5)
WS-F6700-CFC SAL09148CZS Hw : 2.0
Sw :
5 2 WS-SUP720-BASE SAD08280BR6 Hw : 3.1
Fw : 8.1(3)
Fw1: 8.3(5)
Sw : 8.3(5)
Sw1: 8.3(5)
WS-F6K-PFC3A SAD082707T9 Hw : 2.4
Sw :
6 2 WS-SUP720-BASE SAD09070DK6 Hw : 3.3
Fw : 8.1(3)
Fw1: 8.3(5)
Sw : 8.3(5)
Sw1: 8.3(5)
WS-F6K-PFC3A SAD09070G0H Hw : 2.5
Sw :
7 16 WS-X6516-GE-TX SAD0549024Z Hw : 2.0
Fw : 6.1(3)
Sw : 8.3(5)
8 16 WS-X6516-GE-TX SAD060403X2 Hw : 2.0
Fw : 6.1(3)
Sw : 8.3(5)
9 4 WS-X6066-SLB-APC SAD0825082B Hw : 1.7
Fw :
Sw : 4.1(3)
15 1 WS-SUP720 SAD08260D4V Hw : 2.3
Fw : 12.2(17a)SX4
Sw : 12.2(17a)SX4
16 1 WS-SUP720 SAD09070ET9 Hw : 2.5
Fw : 12.2(17a)SX4
Sw : 12.2(17a)SX4
DRAM FLASH NVRAM
Module Total Used Free Total Used Free Total Used Free
------ ------- ------- ------- ------- ------- ------- ----- ----- -----
5 524288K 138924K 385364K 65536K 39993K 25543K 2048K 366K 1682K
Uptime is 64 days, 20 hours, 17 minutes
CoreSwitch2> (enable)
08-12-2007 07:57 PM
Hi
I don't know what the CatOS equivalent of the same command if there indeed one exists. Those error messages that you see clearly indicates there is some inconsistency in how the ports are configured. Can you make sure all the ports on both switches are configured identical in every way and let us know if that helps resolve your problem.
Here's some links for your reference.
http://www.cisco.com/en/US/tech/tk389/tk213/technologies_tech_note09186a008009448d.shtml
http://www.cisco.com/warp/public/473/127.html
HTH
Sundar
08-13-2007 09:22 PM
Hi Sunder
Thanks for your help....Sorry to trouble you again. Pls see the 'sh version" and "sh run full". I did put the command 'spanning-tree etherchannel guard misconfig' in, however, I could see it in the config. Do you know why?
R4#sh ver
Cisco Internetwork Operating System Software
IOS (tm) s72033_rp Software (s72033_rp-ADVENTERPRISEK9_WAN-VM), Version 12.2(18)SXF10, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2007 by cisco Systems, Inc.
Compiled Fri 13-Jul-07 08:58 by kellythw
Image text-base: 0x01020150, data-base: 0x01021000
ROM: System Bootstrap, Version 12.2(17r)S4, RELEASE SOFTWARE (fc1)
BOOTLDR:
HTCUDCR4 uptime is 1 week, 3 days, 22 hours, 51 minutes
Time since HTCUDCR4 switched to active is 1 week, 3 days, 22 hours, 27 minutes
System returned to ROM by Stateful Switchover (SP by reload)
System image file is "sup-bootdisk:s72033-adventerprisek9_wan-vz.122-18.SXF10.bin"
If you require further assistance please contact us by sending email to
cisco WS-C6509-E (R7000) processor (revision 1.3) with 491520K/32768K bytes of memory.
Processor board ID SMC1120000D
SR71000 CPU at 600Mhz, Implementation 1284, Rev 1.2, 512KB L2 Cache
Last reset from s/w reset
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
2 Virtual Ethernet/IEEE 802.3 interfaces
100 Gigabit Ethernet/IEEE 802.3 interfaces
1917K bytes of non-volatile configuration memory.
65536K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102
Patching is not available since the system is not running from an installed image. To install please use the "install file" command
R4#
R4(config)#spanning-tree etherchannel guard misconfig
R4(config)#end
R4#sh run full | in span
spanning-tree mode pvst
R4#
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