<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
Hello Michael:
-----Original Message----- From: Michael Ruiz [mailto:mruiz@telwestservices.com] Sent: Tuesday, November 24, 2009 8:02 AM To: nanog@nanog.org 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
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@adhost.com] Sent: Tuesday, November 24, 2009 11:25 AM To: Michael Ruiz; nanog@nanog.org Subject: RE: <Help --> Having trouble trying to activate a GigE connection> Hello Michael:
-----Original Message----- From: Michael Ruiz [mailto:mruiz@telwestservices.com] Sent: Tuesday, November 24, 2009 8:02 AM To: nanog@nanog.org 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
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@adhost.com] Sent: Tuesday, November 24, 2009 10:25 AM To: Michael Ruiz; nanog@nanog.org Subject: RE: <Help --> Having trouble trying to activate a GigE connection> Hello Michael:
-----Original Message----- From: Michael Ruiz [mailto:mruiz@telwestservices.com] Sent: Tuesday, November 24, 2009 8:02 AM To: nanog@nanog.org 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
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@telwestservices.com> 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@adhost.com] Sent: Tuesday, November 24, 2009 10:25 AM To: Michael Ruiz; nanog@nanog.org Subject: RE: <Help --> Having trouble trying to activate a GigE connection>
Hello Michael:
-----Original Message----- From: Michael Ruiz [mailto:mruiz@telwestservices.com] Sent: Tuesday, November 24, 2009 8:02 AM To: nanog@nanog.org 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@stardoll.com | stardoll: pj0tr mail/visit: Hudiksvallsgatan 8, 113 30 Stockholm, Sweden www.stardoll.com - Fame, fashion and friends
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@stardoll.com] Sent: Wednesday, November 25, 2009 12:39 PM To: Michael Ruiz Cc: Michael K. Smith - Adhost; nanog@nanog.org 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@telwestservices.com> 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@adhost.com] Sent: Tuesday, November 24, 2009 10:25 AM To: Michael Ruiz; nanog@nanog.org Subject: RE: <Help --> Having trouble trying to activate a GigE connection>
Hello Michael:
-----Original Message----- From: Michael Ruiz [mailto:mruiz@telwestservices.com] Sent: Tuesday, November 24, 2009 8:02 AM To: nanog@nanog.org 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@stardoll.com | stardoll: pj0tr mail/visit: Hudiksvallsgatan 8, 113 30 Stockholm, Sweden www.stardoll.com - Fame, fashion and friends
participants (4)
-
Michael K. Smith - Adhost -
Michael Ruiz -
Peter Sandström -
Scott Berkman