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<Help --> Having trouble trying to activate a GigE connection>

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mruiz at telwestservices

Nov 24, 2009, 8:01 AM

Post #1 of 6 (1011 views)
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<Help --> Having trouble trying to activate a GigE connection>

Group,

I am having an issue with activating a Gige interface
between a Cisco 7206 VXR w/IO-1GE module to a 7606 w/sup720-3bxls
connecting to a line module WS-X6416-GBIC. I have verified that the
GBIC-MMF have good light reading and the MMF fiber jumper are not
reversed. The GigE connection comes up briefly for about a few seconds,
takes a burst of errors and goes down. I have tried to set the speed to
nonegotiate on both ends, set one end to speed auto. No dice. Here is
the copy of the configuration. On my 7606 I show that the GigE
interface is up/up but on the 7206vxr I show down/down. Any help will
be greatly appreciated. Thanks!

This is the Cisco 7206VXR configuration.

interface GIabitEthernet0/0

no ip address

duplex full

speed 1000

media-type gbic

no negotiation auto

This is the Cisco 7606 configuration.

interface GigabitEthernet1/8

description AR4-DLLSTXHW-GE0/0

no ip address

speed nonegotiate

Michael Ruiz

Network Engineer

mksmith at adhost

Nov 24, 2009, 8:25 AM

Post #2 of 6 (944 views)
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RE: <Help --> Having trouble trying to activate a GigE connection> [In reply to]

Hello Michael:

> -----Original Message-----
> From: Michael Ruiz [mailto:mruiz [at] telwestservices]
> Sent: Tuesday, November 24, 2009 8:02 AM
> To: nanog [at] nanog
> Subject: <Help --> Having trouble trying to activate a GigE
>
> Group,
>
>
>
> I am having an issue with activating a Gige interface
> between a Cisco 7206 VXR w/IO-1GE module to a 7606 w/sup720-3bxls
> connecting to a line module WS-X6416-GBIC. I have verified that the
> GBIC-MMF have good light reading and the MMF fiber jumper are not
> reversed. The GigE connection comes up briefly for about a few
> seconds,
> takes a burst of errors and goes down. I have tried to set the speed
> to
> nonegotiate on both ends, set one end to speed auto. No dice. Here
is
> the copy of the configuration. On my 7606 I show that the GigE
> interface is up/up but on the 7206vxr I show down/down. Any help will
> be greatly appreciated. Thanks!
>
>
>
I don't think there is any reason to have hard-set speed and duplex,
particularly between two Cisco's. Why not just set *both* sides (you
can't set just one) to auto-negotation - 'no speed nonegotiate' on the
7606 side. Is this a straight shot, single fiber pair between the two
or are there intermediate junctions or optics? It sounds like you have
questionable fiber or optics in the path. It could be the fiber itself
or the GBICs on either side.

Regards,

Mike

scott at sberkman

Nov 24, 2009, 8:52 AM

Post #3 of 6 (951 views)
Permalink

RE: <Help --> Having trouble trying to activate a GigE connection> [In reply to]

I actually have seen where you have to hard set to speed 1000 to get this
type of link up, even Cisco to Cisco.

-Scott

-----Original Message-----
From: Michael K. Smith - Adhost [mailto:mksmith [at] adhost]
Sent: Tuesday, November 24, 2009 11:25 AM
To: Michael Ruiz; nanog [at] nanog
Subject: RE: <Help --> Having trouble trying to activate a GigE connection>

Hello Michael:

> -----Original Message-----
> From: Michael Ruiz [mailto:mruiz [at] telwestservices]
> Sent: Tuesday, November 24, 2009 8:02 AM
> To: nanog [at] nanog
> Subject: <Help --> Having trouble trying to activate a GigE
>
> Group,
>
>
>
> I am having an issue with activating a Gige interface
> between a Cisco 7206 VXR w/IO-1GE module to a 7606 w/sup720-3bxls
> connecting to a line module WS-X6416-GBIC. I have verified that the
> GBIC-MMF have good light reading and the MMF fiber jumper are not
> reversed. The GigE connection comes up briefly for about a few
> seconds,
> takes a burst of errors and goes down. I have tried to set the speed
> to
> nonegotiate on both ends, set one end to speed auto. No dice. Here
is
> the copy of the configuration. On my 7606 I show that the GigE
> interface is up/up but on the 7206vxr I show down/down. Any help will
> be greatly appreciated. Thanks!
>
>
>
I don't think there is any reason to have hard-set speed and duplex,
particularly between two Cisco's. Why not just set *both* sides (you
can't set just one) to auto-negotation - 'no speed nonegotiate' on the
7606 side. Is this a straight shot, single fiber pair between the two
or are there intermediate junctions or optics? It sounds like you have
questionable fiber or optics in the path. It could be the fiber itself
or the GBICs on either side.

Regards,

Mike

mruiz at telwestservices

Nov 24, 2009, 9:04 AM

Post #4 of 6 (958 views)
Permalink

RE: <Help --> Having trouble trying to activate a GigE connection> [In reply to]

>I don't think there is any reason to have hard-set speed and duplex,
>particularly between two Cisco's. Why not just set *both* sides (you
>can't set just one) to auto-negotation - 'no speed nonegotiate' on the
>7606 side. Is this a straight shot, single fiber pair between the two
>or are there intermediate junctions or optics? It sounds like you have
>questionable fiber or optics in the path. It could be the fiber itself
>or the GBICs on either side.

Mike,

I tried setting the 7206 to auto, and the 7606 to nonnegtiate,
however, no dice. We put light meter on both ends of the GBIC and light
readings are at -20, which are applicable. Between the two routers are
MMF and it is straight shot with no transport equipment in between.

-----Original Message-----
From: Michael K. Smith - Adhost [mailto:mksmith [at] adhost]
Sent: Tuesday, November 24, 2009 10:25 AM
To: Michael Ruiz; nanog [at] nanog
Subject: RE: <Help --> Having trouble trying to activate a GigE

Hello Michael:

> -----Original Message-----
> From: Michael Ruiz [mailto:mruiz [at] telwestservices]
> Sent: Tuesday, November 24, 2009 8:02 AM
> To: nanog [at] nanog
> Subject: <Help --> Having trouble trying to activate a GigE
>
> Group,
>
>
>
> I am having an issue with activating a Gige interface
> between a Cisco 7206 VXR w/IO-1GE module to a 7606 w/sup720-3bxls
> connecting to a line module WS-X6416-GBIC. I have verified that the
> GBIC-MMF have good light reading and the MMF fiber jumper are not
> reversed. The GigE connection comes up briefly for about a few
> seconds,
> takes a burst of errors and goes down. I have tried to set the speed
> to
> nonegotiate on both ends, set one end to speed auto. No dice. Here
is
> the copy of the configuration. On my 7606 I show that the GigE
> interface is up/up but on the 7206vxr I show down/down. Any help will
> be greatly appreciated. Thanks!
>
>
>
I don't think there is any reason to have hard-set speed and duplex,
particularly between two Cisco's. Why not just set *both* sides (you
can't set just one) to auto-negotation - 'no speed nonegotiate' on the
7606 side. Is this a straight shot, single fiber pair between the two
or are there intermediate junctions or optics? It sounds like you have
questionable fiber or optics in the path. It could be the fiber itself
or the GBICs on either side.

Regards,

Mike

peter at stardoll

Nov 25, 2009, 10:39 AM

Post #5 of 6 (935 views)
Permalink

Re: <Help --> Having trouble trying to activate a GigE connection> [In reply to]

I have seen this behavior caused by a mismatch of SFPs, SX on one side
and LX on the other.

/p

On Tue, Nov 24, 2009 at 9:04 AM, Michael Ruiz <mruiz [at] telwestservices> wrote:
>>I don't think there is any reason to have hard-set speed and duplex,
>>particularly between two Cisco's. Why not just set *both* sides (you
>>can't set just one) to auto-negotation - 'no speed nonegotiate' on the
>>7606 side. Is this a straight shot, single fiber pair between the two
>>or are there intermediate junctions or optics? It sounds like you have
>>questionable fiber or optics in the path. It could be the fiber itself
>>or the GBICs on either side.
>
> Mike,
>
> I tried setting the 7206 to auto, and the 7606 to nonnegtiate,
> however, no dice. We put light meter on both ends of the GBIC and light
> readings are at -20, which are applicable. Between the two routers are
> MMF and it is straight shot with no transport equipment in between.
>
> -----Original Message-----
> From: Michael K. Smith - Adhost [mailto:mksmith [at] adhost]
> Sent: Tuesday, November 24, 2009 10:25 AM
> To: Michael Ruiz; nanog [at] nanog
> Subject: RE: <Help --> Having trouble trying to activate a GigE
> connection>
>
> Hello Michael:
>
>> -----Original Message-----
>> From: Michael Ruiz [mailto:mruiz [at] telwestservices]
>> Sent: Tuesday, November 24, 2009 8:02 AM
>> To: nanog [at] nanog
>> Subject: <Help --> Having trouble trying to activate a GigE
> connection>
>>
>> Group,
>>
>>
>>
>> I am having an issue with activating a Gige interface
>> between a Cisco 7206 VXR w/IO-1GE module to a 7606 w/sup720-3bxls
>> connecting to a line module WS-X6416-GBIC. I have verified that the
>> GBIC-MMF have good light reading and the MMF fiber jumper are not
>> reversed. The GigE connection comes up briefly for about a few
>> seconds,
>> takes a burst of errors and goes down. I have tried to set the speed
>> to
>> nonegotiate on both ends, set one end to speed auto. No dice. Here
> is
>> the copy of the configuration. On my 7606 I show that the GigE
>> interface is up/up but on the 7206vxr I show down/down. Any help will
>> be greatly appreciated. Thanks!
>>
>>
>>
> I don't think there is any reason to have hard-set speed and duplex,
> particularly between two Cisco's. Why not just set *both* sides (you
> can't set just one) to auto-negotation - 'no speed nonegotiate' on the
> 7606 side. Is this a straight shot, single fiber pair between the two
> or are there intermediate junctions or optics? It sounds like you have
> questionable fiber or optics in the path. It could be the fiber itself
> or the GBICs on either side.
>
> Regards,
>
> Mike
>
>

--
Peter Sandström
Head of Operations, Stardoll AB
phone: +46 (0)70 456 05 28
e-mail: peter [at] stardoll | stardoll: pj0tr
mail/visit: Hudiksvallsgatan 8, 113 30 Stockholm, Sweden
www.stardoll.com - Fame, fashion and friends

mruiz at telwestservices

Nov 25, 2009, 11:01 AM

Post #6 of 6 (938 views)
Permalink

RE: <Help --> Having trouble trying to activate a GigE connection> [In reply to]

>I have seen this behavior caused by a mismatch of SFPs, SX on one side
>and LX on the other.

We found the problem. After going through 5 MMF GBICS we found one that worked.

-----Original Message-----
From: Peter Sandström [mailto:peter [at] stardoll]
Sent: Wednesday, November 25, 2009 12:39 PM
To: Michael Ruiz
Cc: Michael K. Smith - Adhost; nanog [at] nanog
Subject: Re: <Help --> Having trouble trying to activate a GigE connection>

I have seen this behavior caused by a mismatch of SFPs, SX on one side
and LX on the other.

/p

On Tue, Nov 24, 2009 at 9:04 AM, Michael Ruiz <mruiz [at] telwestservices> wrote:
>>I don't think there is any reason to have hard-set speed and duplex,
>>particularly between two Cisco's. Why not just set *both* sides (you
>>can't set just one) to auto-negotation - 'no speed nonegotiate' on the
>>7606 side. Is this a straight shot, single fiber pair between the two
>>or are there intermediate junctions or optics? It sounds like you have
>>questionable fiber or optics in the path. It could be the fiber itself
>>or the GBICs on either side.
>
> Mike,
>
> I tried setting the 7206 to auto, and the 7606 to nonnegtiate,
> however, no dice. We put light meter on both ends of the GBIC and light
> readings are at -20, which are applicable. Between the two routers are
> MMF and it is straight shot with no transport equipment in between.
>
> -----Original Message-----
> From: Michael K. Smith - Adhost [mailto:mksmith [at] adhost]
> Sent: Tuesday, November 24, 2009 10:25 AM
> To: Michael Ruiz; nanog [at] nanog
> Subject: RE: <Help --> Having trouble trying to activate a GigE
> connection>
>
> Hello Michael:
>
>> -----Original Message-----
>> From: Michael Ruiz [mailto:mruiz [at] telwestservices]
>> Sent: Tuesday, November 24, 2009 8:02 AM
>> To: nanog [at] nanog
>> Subject: <Help --> Having trouble trying to activate a GigE
> connection>
>>
>> Group,
>>
>>
>>
>> I am having an issue with activating a Gige interface
>> between a Cisco 7206 VXR w/IO-1GE module to a 7606 w/sup720-3bxls
>> connecting to a line module WS-X6416-GBIC. I have verified that the
>> GBIC-MMF have good light reading and the MMF fiber jumper are not
>> reversed. The GigE connection comes up briefly for about a few
>> seconds,
>> takes a burst of errors and goes down. I have tried to set the speed
>> to
>> nonegotiate on both ends, set one end to speed auto. No dice. Here
> is
>> the copy of the configuration. On my 7606 I show that the GigE
>> interface is up/up but on the 7206vxr I show down/down. Any help will
>> be greatly appreciated. Thanks!
>>
>>
>>
> I don't think there is any reason to have hard-set speed and duplex,
> particularly between two Cisco's. Why not just set *both* sides (you
> can't set just one) to auto-negotation - 'no speed nonegotiate' on the
> 7606 side. Is this a straight shot, single fiber pair between the two
> or are there intermediate junctions or optics? It sounds like you have
> questionable fiber or optics in the path. It could be the fiber itself
> or the GBICs on either side.
>
> Regards,
>
> Mike
>
>

--
Peter Sandström
Head of Operations, Stardoll AB
phone: +46 (0)70 456 05 28
e-mail: peter [at] stardoll | stardoll: pj0tr
mail/visit: Hudiksvallsgatan 8, 113 30 Stockholm, Sweden
www.stardoll.com - Fame, fashion and friends

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