Re: Port channel goes in suspension state 6500

From: ALL From_NJ (all.from.nj@gmail.com)
Date: Tue Mar 17 2009 - 21:24:24 ART

True that.

On Tue, Mar 17, 2009 at 6:05 PM, Pavel Bykov <slidersv@gmail.com> wrote:

> Suspended state is one thing.
> Violating Etherchannel rules, by configuring the port instad of portchannel
> and thus bringing the channel down is completely another.
>
> On Tue, Mar 17, 2009 at 7:43 PM, Nitin Venugopal <nitinsworld@gmail.com>wrote:
>
>> Hi,
>>
>> While the mails were floating about port channel (suspension), just
>> happen
>> to get a encounter a realtime issue with a call from customer:)
>>
>> 6500 - Port channel 1 has (Te 1/1 and 2/1 - Differnt Modules) running
>> 12.18SXF (15A)
>>
>> 1) By mistake customer added a new allowed vlan on one of the port , Te
>> 1/1
>> --( commad switch port trunk allowed vlan add 96)
>> 2) Soon after that the whole Port Channel went down.
>>
>> I have just started the investigation, but wondering why did the port
>> channel go down and why did it suspend the other port 2/1 also.
>>
>> Best Regard
>> Nitin
>>
>>
>> ---------Logs
>>
>> Mar 17 19:55:04.139 UAE: %EC-SP-5-CANNOT_BUNDLE2: Te1/1 is not compatible
>> with Te2/1 and will be suspended (vlan mask is different)
>> 001253: Mar 17 19:55:39.671 UAE: %STANDBY-3-DUPADDR: Duplicate address
>> 172.24.22.2 on Vlan71, sourced by 001c.0f5f.ef00
>> 001254: Mar 17 19:55:50.924 UAE: %OSPF-5-ADJCHG: Process 1, Nbr
>> 172.24.100.8
>> on Vlan100 from FULL to DOWN, Neighbor Down: Dead timer expired
>> 001255: Mar 17 19:55:50.928 UAE: %OSPF-5-ADJCHG: Process 1, Nbr
>> 172.24.100.8
>> on Vlan30 from FULL to DOWN, Neighbor Down: Dead timer expired
>> 001256: Mar 17 19:55:51.117 UAE: %OSPF-5-ADJCHG: Process 1, Nbr
>> 172.24.100.8
>> on Vlan94 from FULL to DOWN, Neighbor Down: Dead timer expired
>> 001257: Mar 17 19:56:09.805 UAE: %STANDBY-3-DUPADDR: Duplicate address
>> 172.24.22.66 on Vlan72, sourced by 001c.0f5f.ef00
>> 001258: Mar 17 19:56:23.506 UAE: %SVCLC-5-FWTRUNK: Firewalled VLANs
>> configured on trunks
>> Mar 17 19:56:23.501 UAE: %EC-SP-5-CANNOT_BUNDLE2: Te1/1 is not compatible
>> with Po1 and will be suspended (vlan mask is different)
>> Mar 17 19:56:23.501 UAE: %EC-SP-5-CANNOT_BUNDLE2: Te1/1 is not compatible
>> with Po1 and will be suspended (vlan mask is different)
>> Mar 17 19:56:23.501 UAE: %EC-SP-5-CANNOT_BUNDLE2: Te2/1 is not compatible
>> with Po1 and will be suspended (vlan mask is different)
>> Mar 17 19:56:23.513 UAE: %LINEPROTO-SP-5-UPDOWN: Line protocol on
>> Interface
>> TenGigabitEthernet2/1, changed state to down
>> Mar 17 19:56:23.517 UAE: %LINEPROTO-SP-5-UPDOWN: Line protocol on
>> Interface
>> Port-channel1, changed state to down
>> 001259: Mar 17 19:56:23.598 UAE: %LINEPROTO-5-UPDOWN: Line protocol on
>> Interface TenGigabitEthernet2/1, changed state to down
>> 001260: Mar 17 19:56:23.602 UAE: %LINEPROTO-5-UPDOWN: Line protocol on
>> Interface Port-channel1, changed state to down
>> 001261: Mar 17 19:56:23.618 UAE: %LINK-3-UPDOWN: Interface Port-channel1,
>> changed state to down
>> Mar 17 19:56:23.553 UAE: %LINK-SP-3-UPDOWN: Interface Port-channel1,
>> changed
>> state to down
>> 001262: Mar 17 19:56:29.743 UAE: %OSPF-5-ADJCHG: Process 1, Nbr
>> 172.24.100.8
>> on Vlan100 from LOADING to FULL, Loading Done
>> 001263: Mar 17 19:56:37.643 UAE: %OSPF-5-ADJCHG: Process 1, Nbr
>> 172.24.100.8
>> on Vlan94 from LOADING to FULL, Loading Done
>> 001264: Mar 17 19:56:59.625 UAE: %OSPF-5-ADJCHG: Process 1, Nbr
>> 172.24.100.8
>> on Vlan48 from FULL to DOWN, Neighbor Down: Dead timer expired
>> 001265: Mar 17 19:56:59.625 UAE: %OSPF-5-ADJCHG: Process 1, Nbr
>> 172.24.100.8
>> on Vlan32 from FULL to DOWN, Neighbor Down: Dead timer expired
>> 001266: Mar 17 19:57:13.919 UAE: %LINK-5-CHANGED: Interface
>> TenGigabitEthernet1/1, changed state to administratively down
>> Mar 17 19:57:13.857 UAE: %EC-SP-5-CANNOT_BUNDLE2: Te2/1 is not compatible
>> with Po1 and will be suspended (vlan mask is different)
>> Mar 17 19:57:13.909 UAE: %LINK-SP-5-CHANGED: Interface
>> TenGigabitEthernet1/1, changed state to administratively down
>> 001267: Mar 17 19:57:15.533 UAE: %LINK-3-UPDOWN: Interface
>> TenGigabitEthernet1/1, changed state to down
>> Mar 17 19:57:15.533 UAE: %LINK-SP-3-UPDOWN: Interface
>> TenGigabitEthernet1/1,
>> changed state to down
>> 001268: Mar 17 19:57:16.639 UAE: %LINK-3-UPDOWN: Interface
>> TenGigabitEthernet1/1, changed state to up
>> Mar 17 19:57:16.622 UAE: %LINK-SP-3-UPDOWN: Interface
>> TenGigabitEthernet1/1,
>> changed state to up
>> 001269: Mar 17 19:57:20.104 UAE: %SYS-5-CONFIG_I: Configured from console
>> by
>> console
>> Mar 17 19:57:19.571 UAE: %EC-SP-5-CANNOT_BUNDLE2: Te1/1 is not compatible
>> with Po1 and will be suspended (vlan mask is different)
>> 001270: .Mar 17 19:58:17.089 UAE: %SVCLC-5-FWTRUNK: Firewalled VLANs
>> configured on trunks
>> 001271: .Mar 17 19:58:17.097 UAE: %LINEPROTO-5-UPDOWN: Line protocol on
>> Interface TenGigabitEthernet1/1, changed state to up
>> 001272: .Mar 17 19:58:17.109 UAE: %LINEPROTO-5-UPDOWN: Line protocol on
>> Interface TenGigabitEthernet2/1, changed state to up
>> 001273: .Mar 17 19:58:17.141 UAE: %LINK-3-UPDOWN: Interface Port-channel1,
>> changed state to up
>> 001274: .Mar 17 19:58:17.145 UAE: %LINEPROTO-5-UPDOWN: Line protocol on
>> Interface Port-channel1, changed state to up
>> Mar 17 19:58:17.062 UAE: %EC-SP-5-COMPATIBLE: Te1/1 is compatible with
>> port-channel members
>> Mar 17 19:58:17.078 UAE: %EC-SP-5-COMPATIBLE: Te2/1 is compatible with
>> port-channel members
>> Mar 17 19:58:17.106 UAE: %LINEPROTO-SP-5-UPDOWN: Line protocol on
>> Interface
>> TenGigabitEthernet1/1, changed state to up
>> Mar 17 19:58:17.106 UAE: %LINEPROTO-SP-5-UPDOWN: Line protocol on
>> Interface
>> TenGigabitEthernet2/1, changed state to up
>> Mar 17 19:58:17.258 UAE: %LINK-SP-3-UPDOWN: Interface Port-channel1,
>> changed
>> state to up
>> Mar 17 19:58:17.266 UAE: %LINEPROTO-SP-5-UPDOWN: Line protocol on
>> Interface
>> Port-channel1, changed state to up
>> ---------------Logs-------------
>>
>>
>>
>> On Tue, Mar 17, 2009 at 9:10 PM, ALL From_NJ <all.from.nj@gmail.com>
>> wrote:
>>
>> > Would be nice to see the logs for when the ports are going into
>> suspended
>> > state ... messages displayed at this time are key.
>> >
>> > Suspended state occurs due to the control plane protocols putting the
>> port
>> > into it. What are the control protocols seeing that they do not like?
>> > Examples of control protocols are STP, CDP (CDP carries a lot of control
>> > information inside it too), etc ...
>> >
>> > Could the switch be seeing it's own packets coming back to it? Probably
>> no
>> > way to tell over email and writing a book will not help ... but I would
>> > suggest to monitor both switches and watch for the log messages to
>> occur.
>> >
>> > I do not think it is a config problem on this switch since it comes up
>> and
>> > stays up for some time. Perhaps the switch it connects to is
>> misconfigured
>> > or has issues w/ flapping links or something like this? I would also
>> > suggest to look at your topology and see where a control plane /
>> protocol
>> > problem could be happening ... and start there.
>> >
>> > HTH,
>> >
>> > Andrew Lee Lissitz
>> >
>> >
>> >
>> > On Tue, Mar 17, 2009 at 12:03 PM, <andy@cloud9.net> wrote:
>> >
>> > > My first thought would be a spanning tree issue but I'm thinking
>> > > there should be a reason why the etherchannel goes into a suspended
>> > > state.
>> > >
>> > > One other thing to look for is if you have QoS enable and the port
>> > > in the etherchannel are in different module. QoS makes sure that the
>> > > hardware buffers are the same and if they are not will suspend some
>> > > ports. There is a work around for this issue "no mls qos
>> > > channel-consistency" on the port-channel will fix this problem.
>> > >
>> > > If neither of these help you I will be glad to look at show tech's
>> > > from both switches. Just zip them and send them to me.
>> > >
>> > > Andy
>> > >
>> > > Quoting Network places <uniquemoonlight@gmail.com>:
>> > >
>> > > > Hi All,
>> > > > i have an etherchannel configured between 6500's. Which
>> stays
>> > up
>> > > for
>> > > > a while when you no shut but after a while it goes in the suspension
>> > > state
>> > > > and stays there connectivity is lost as well. Cant find a reason for
>> > > that.
>> > > > Any help would be highly appreciated.
>> > > >
>> > > >
>> > > > Thanks
>> > > >
>> > > >
>> > > > Blogs and organic groups at http://www.ccie.net[1]
>> > > >
>> > > >
>> _______________________________________________________________________
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>> > <http://www.groupstudy.com/list/CCIELab.html%5B2%5D>
>> > > >
>> > > >
>> > > >
>> > > >
>> > > >
>> > > >
>> > > >
>> > > >
>> > >
>> > >
>> > > Links:
>> > > ------
>> > > [1] http://www.ccie.net/
>> > > [2] http://www.groupstudy.com/list/CCIELab.html
>> > >
>> > >
>> > > Blogs and organic groups at http://www.ccie.net
>> > >
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>> _______________________________________________________________________
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>> >
>> > --
>> > Andrew Lee Lissitz
>> > all.from.nj@gmail.com
>> >
>> >
>> > Blogs and organic groups at http://www.ccie.net
>> >
>> > _______________________________________________________________________
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>>
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>>
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>
>
> --
> Pavel Bykov
> ----------------
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> 

-- 
Andrew Lee Lissitz
all.from.nj@gmail.com

Blogs and organic groups at http://www.ccie.net

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