Re: [c-nsp] err-disable state on a cisco 3750 catalyst

[James Bensley]

On 13 July 2016 at 13:13, Olivier CALVANO  wrote:
> Hi
>
> i don't have the configuration of the other side, on my side :
>
> interface Port-channel1
>  switchport trunk encapsulation dot1q
>  switchport mode trunk
>
>
> interface GigabitEthernet1/0/1
>  switchport trunk encapsulation dot1q
>  switchport mode trunk
>  channel-group 1 mode active


Just one local interface in the bundle?

You are probably going to need the far side config to bottom this out.

Cheers,
James.
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Re: [c-nsp] err-disable state on a cisco 3750 catalyst

[James Bensley]

On 12 July 2016 at 19:41, Olivier CALVANO  wrote:
> Hi
>
> i have a big problems with one cisco 3750 :
>
>
> Jul 12 17:30:36.218: %PM-4-ERR_DISABLE: channel-misconfig error detected on
> Gi1/0/1, putting Gi1/0/1 in err-disable state
> Jul 12 17:30:36.856: %PM-4-ERR_DISABLE: channel-misconfig error detected on
> Po1, putting Gi1/0/1 in err-disable state
> Jul 12 17:30:36.856: %PM-4-ERR_DISABLE: channel-misconfig error detected on
> Po1, putting Po1 in err-disable state


Dude, share the interface and port-channel configured from the devices
at each end.


Cheers,
James.
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Re: [c-nsp] err-disable state on a cisco 3750 catalyst

[Nick Cutting]

We have similar command on the Brocade side, not the cisco side and have had no 
issues:

interface Port-channel 3
 description L2 Transit to Cisco-Kit
 no ip address
 portmode hybrid
 switchport
 no spanning-tree pvst err-dis cause invalid-pvst-bpdu 
 no shutdown

-Original Message-
From: cisco-nsp [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Hunter 
Fuller
Sent: Tuesday, July 12, 2016 4:13 PM
To: Gert Doering <g...@greenie.muc.de>
Cc: cisco-nsp <cisco-nsp@puck.nether.net>
Subject: Re: [c-nsp] err-disable state on a cisco 3750 catalyst

Yes, I was very surprised. We are rolling out some Brocade ICX 7k units. If you 
LACP one of those to a Cisco, this will happen. I have observed it with ICX 
7750 and 7450, as well as Catalyst 3850 and 6700.

On Tuesday, July 12, 2016, Gert Doering <g...@greenie.muc.de> wrote:

> Hi,
>
> On Tue, Jul 12, 2016 at 02:26:36PM -0500, Hunter Fuller wrote:
> > If you are running a LACP bundle, and the other end is not a Cisco 
> > piece of gear, and the error only happens when more than one link is 
> > up, then what is happening is, the far end is sending BPDUs on more 
> > than one member of the LACP bundle. Cisco gear does not expect this 
> > and will shut the entire Port-channel. To make it stop doing that, 
> > do this in config mode:
> >
> > no spanning-tree etherchannel guard misconfig
>
> It will log *this* error message in this scenario?
>
> This strikes me as odd (usually Cisco gear is pretty good in 
> explaining why it is disabling stuff, people just never read further than 
> "ERROR...").
>
> gert
> --
> USENET is *not* the non-clickable part of WWW!
>// 
> www.muc.de/~gert/ Gert Doering - Munich, Germany g...@greenie.muc.de 
> <javascript:;>
> fax: +49-89-35655025
> g...@net.informatik.tu-muenchen.de <javascript:;>
>


-- 

--
Hunter Fuller
Network Engineer
VBRH Annex B-1
+1 256 824 5331

Office of Information Technology
The University of Alabama in Huntsville
Systems and Infrastructure
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Re: [c-nsp] err-disable state on a cisco 3750 catalyst

[Hunter Fuller]

Yes, I was very surprised. We are rolling out some Brocade ICX 7k units. If
you LACP one of those to a Cisco, this will happen. I have observed it with
ICX 7750 and 7450, as well as Catalyst 3850 and 6700.

On Tuesday, July 12, 2016, Gert Doering  wrote:

> Hi,
>
> On Tue, Jul 12, 2016 at 02:26:36PM -0500, Hunter Fuller wrote:
> > If you are running a LACP bundle, and the other end is not a Cisco
> > piece of gear, and the error only happens when more than one link is
> > up, then what is happening is, the far end is sending BPDUs on more
> > than one member of the LACP bundle. Cisco gear does not expect this
> > and will shut the entire Port-channel. To make it stop doing that, do
> > this in config mode:
> >
> > no spanning-tree etherchannel guard misconfig
>
> It will log *this* error message in this scenario?
>
> This strikes me as odd (usually Cisco gear is pretty good in explaining why
> it is disabling stuff, people just never read further than "ERROR...").
>
> gert
> --
> USENET is *not* the non-clickable part of WWW!
>//
> www.muc.de/~gert/
> Gert Doering - Munich, Germany
> g...@greenie.muc.de 
> fax: +49-89-35655025
> g...@net.informatik.tu-muenchen.de 
>


-- 

--
Hunter Fuller
Network Engineer
VBRH Annex B-1
+1 256 824 5331

Office of Information Technology
The University of Alabama in Huntsville
Systems and Infrastructure
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Re: [c-nsp] err-disable state on a cisco 3750 catalyst

[Gert Doering]

Hi,

On Tue, Jul 12, 2016 at 02:26:36PM -0500, Hunter Fuller wrote:
> If you are running a LACP bundle, and the other end is not a Cisco
> piece of gear, and the error only happens when more than one link is
> up, then what is happening is, the far end is sending BPDUs on more
> than one member of the LACP bundle. Cisco gear does not expect this
> and will shut the entire Port-channel. To make it stop doing that, do
> this in config mode:
> 
> no spanning-tree etherchannel guard misconfig

It will log *this* error message in this scenario?  

This strikes me as odd (usually Cisco gear is pretty good in explaining why 
it is disabling stuff, people just never read further than "ERROR...").

gert
-- 
USENET is *not* the non-clickable part of WWW!
   //www.muc.de/~gert/
Gert Doering - Munich, Germany g...@greenie.muc.de
fax: +49-89-35655025g...@net.informatik.tu-muenchen.de


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Re: [c-nsp] err-disable state on a cisco 3750 catalyst

[Gert Doering]

Hi,

On Tue, Jul 12, 2016 at 08:41:57PM +0200, Olivier CALVANO wrote:
> there is a solution to disable the errdisable on this type of switch?

Fix the difference in config between the ports, so there is no
inconsistency any more?

gert
-- 
USENET is *not* the non-clickable part of WWW!
   //www.muc.de/~gert/
Gert Doering - Munich, Germany g...@greenie.muc.de
fax: +49-89-35655025g...@net.informatik.tu-muenchen.de


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Re: [c-nsp] err-disable state on a cisco 3750 catalyst

[Hunter Fuller]

If you are running a LACP bundle, and the other end is not a Cisco
piece of gear, and the error only happens when more than one link is
up, then what is happening is, the far end is sending BPDUs on more
than one member of the LACP bundle. Cisco gear does not expect this
and will shut the entire Port-channel. To make it stop doing that, do
this in config mode:

no spanning-tree etherchannel guard misconfig

--
Hunter Fuller
Network Engineer
VBRH Annex B-1
+1 256 824 5331

Office of Information Technology
The University of Alabama in Huntsville
Systems and Infrastructure


On Tue, Jul 12, 2016 at 1:41 PM, Olivier CALVANO  wrote:
> Hi
>
> i have a big problems with one cisco 3750 :
>
>
> Jul 12 17:30:36.218: %PM-4-ERR_DISABLE: channel-misconfig error detected on
> Gi1/0/1, putting Gi1/0/1 in err-disable state
> Jul 12 17:30:36.856: %PM-4-ERR_DISABLE: channel-misconfig error detected on
> Po1, putting Gi1/0/1 in err-disable state
> Jul 12 17:30:36.856: %PM-4-ERR_DISABLE: channel-misconfig error detected on
> Po1, putting Po1 in err-disable state
>
>
> The port is in err-disable regularly .. a shut and no shut that's restart
>
>
>
> C3750#sh errdisable detect
> ErrDisable Reason  DetectionMode
> -  -
> arp-inspection  Enabled  port
> bpduguard   Enabled  port
> channel-misconfig   Enabled  port
> community-limit Enabled  port
> dhcp-rate-limit Enabled  port
> dtp-flapEnabled  port
> gbic-invalidDisabled
> inline-powerEnabled  port
> invalid-policy  Enabled  port
> l2ptguard   Enabled  port
> link-flap   Enabled  port
> loopbackEnabled  port
> lsgroup Enabled  port
> mac-limit   Enabled  port
> pagp-flap   Enabled  port
> port-mode-failure   Enabled  port
> psecure-violation   Enabled  port/vlan
> security-violation  Enabled  port
> sfp-config-mismatch Enabled  port
> small-frame Enabled  port
> storm-control   Enabled  port
> udldEnabled  port
> vmpsEnabled  port
>
>
> there is a solution to disable the errdisable on this type of switch?
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Re: [c-nsp] err-disable state on a cisco 3750 catalyst

[Nick Cutting]

Read this - 
http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/69980-errdisable-recovery.html

However - as alan said - it is more important to figure out why this is 
happening - than to have it recover automatically.

Are you making configuration changes to the channel config (or member ports) to 
cause this - or does this happen after a while? 

-Original Message-
From: cisco-nsp [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of 
a.l.m.bu...@lboro.ac.uk
Sent: Tuesday, July 12, 2016 3:06 PM
To: Olivier CALVANO <o.calv...@gmail.com>
Cc: cisco-nsp@puck.nether.net
Subject: Re: [c-nsp] err-disable state on a cisco 3750 catalyst

Hi,

> Jul 12 17:30:36.218: %PM-4-ERR_DISABLE: channel-misconfig error 
> detected on Gi1/0/1, putting Gi1/0/1 in err-disable state

so...what is the cause of this.  check the config of gi1/0/1, ensure it matches 
the methods/speed etc of other members of the port-channel etc its been 
assigned to

> The port is in err-disable regularly .. a shut and no shut that's 
> restart

err-disable doing its job

> there is a solution to disable the errdisable on this type of switch?

huh its currently likely saving your a** from something far worse happening 
on your network.

alan
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Re: [c-nsp] err-disable state on a cisco 3750 catalyst

[A . L . M . Buxey]

Hi,

> Jul 12 17:30:36.218: %PM-4-ERR_DISABLE: channel-misconfig error detected on
> Gi1/0/1, putting Gi1/0/1 in err-disable state

so...what is the cause of this.  check the config of gi1/0/1, ensure it matches
the methods/speed etc of other members of the port-channel etc its been 
assigned to

> The port is in err-disable regularly .. a shut and no shut that's restart

err-disable doing its job

> there is a solution to disable the errdisable on this type of switch?

huh its currently likely saving your a** from something far worse happening 
on your network.

alan
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[c-nsp] err-disable state on a cisco 3750 catalyst

[Olivier CALVANO]

Hi

i have a big problems with one cisco 3750 :


Jul 12 17:30:36.218: %PM-4-ERR_DISABLE: channel-misconfig error detected on
Gi1/0/1, putting Gi1/0/1 in err-disable state
Jul 12 17:30:36.856: %PM-4-ERR_DISABLE: channel-misconfig error detected on
Po1, putting Gi1/0/1 in err-disable state
Jul 12 17:30:36.856: %PM-4-ERR_DISABLE: channel-misconfig error detected on
Po1, putting Po1 in err-disable state


The port is in err-disable regularly .. a shut and no shut that's restart



C3750#sh errdisable detect
ErrDisable Reason  DetectionMode
-  -
arp-inspection  Enabled  port
bpduguard   Enabled  port
channel-misconfig   Enabled  port
community-limit Enabled  port
dhcp-rate-limit Enabled  port
dtp-flapEnabled  port
gbic-invalidDisabled
inline-powerEnabled  port
invalid-policy  Enabled  port
l2ptguard   Enabled  port
link-flap   Enabled  port
loopbackEnabled  port
lsgroup Enabled  port
mac-limit   Enabled  port
pagp-flap   Enabled  port
port-mode-failure   Enabled  port
psecure-violation   Enabled  port/vlan
security-violation  Enabled  port
sfp-config-mismatch Enabled  port
small-frame Enabled  port
storm-control   Enabled  port
udldEnabled  port
vmpsEnabled  port


there is a solution to disable the errdisable on this type of switch?
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