Re: how to test the GBIC is 1000BASE-ZX. in GSR [7:19114]
Ooops. I did read "maximum" where it says "minimum." Sorry. I guess the 8-dB attenuator inserts loss into the link and he's going to need one on each end. The reference says: The minimum link distance for ZX GBICs is 6.2 miles (10 km) with an 8-dB attenuator installed at each end of the link. Without attenuators, the minimum link distance is 24.9 miles (40 km). I'm assuming by "50 M" he meant meters, not miles? ;-) Thanks for clarifying this. I figured I was suffering from some kind of dain bramage when I wrote the message. Priscilla At 12:30 AM 9/21/01, [EMAIL PROTECTED] wrote: >U, the link is referring to *minimum* distances, not maximum. So 50 >metres is not OK. However, the original poster did say 50m, not 50 metres. >If 50m was intended to refer to miles, not metres, you might be doing OK : >-) > >Seems rather counter-intuitive - we usually have to worry about whether a >link is too long. But from my rather limited understanding, I think in >layman's terms if your link is too short then there will not be as much >power loss as 'expected', so you are at risk of frying your receiving >hardware. > >JMcL >- Forwarded by Jenny Mcleod/NSO/CSDA on 21/09/2001 02:06 pm - > > > >"Priscilla > Oppenheimer" To: >[EMAIL PROTECTED] > Subject: Re: how to test the GBIC >is > Sent by: 1000BASE-ZX. in GSR >[7:19114] > >nobody@groups > >tudy.com > > > > > >21/09/2001 > 12:32 >pm > >Please > respond >to > >"Priscilla > >Oppenheimer" > > > > > > > > >U, he said 50 meters not 50 kilometers. 50 meters should easily be OK. > >Priscilla > >At 07:58 PM 9/20/01, David C Prall wrote: > > From the horses mouth: > >http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/6000hw/mod_inst/ > > >02prep.htm > > > >The minimum link distance for ZX GBICs is 6.2 miles (10 km) with an 8-dB > >attenuator installed at each end of the link. Without attenuators, the > >minimum link distance is 24.9 miles (40 km). > > > >With a 50m cable you should not be getting any kind of link and are most > >likely overdriving the Receive end. > >Therefore, when you do find a 40km long > >cable it may not work either. > > > >David C Prall [EMAIL PROTECTED] http://dcp.dcptech.com > >- Original Message - > >From: "Wang" > >To: > >Sent: Saturday, September 08, 2001 11:49 AM > >Subject: how to test the GBIC is 1000BASE-ZX. in GSR [7:19114] > > > > > > > Dear all : > > > > > > I 've are problem about testing cisco GBIC ZX in GSR. I just 've 50 M > > > single mode fiber. > > > Would you mind give me some information for test the GBIC. > > > > > > Story : > > > Our client 've order 3 GBIC for Three-port Gigabit Ethernet Card . > > > But, some problem in 2 GBIC can't pass connection test. > > > > > > > > > Test 1 ) > > > I use the SC fiber cross at both GI port at e.g ( Gi2/0 to Gi 3/0). > > > The both 3GE-GBIC-SC status can not active & the all LED is off. > > > I 've try to sweep the TX & RX position and sweep to next Gigabit > > > Ethernet module..etc. > > > Still no response . > > > > > > Test 2 ) > > > Next test, it test is use the one fiber cable only (single side). Make > > > the GBIC TX & RX in loop at single fiber. Just one GBIC can enable & > > > up. Other GBIC still is no response ! > > > Remark : In this section the fiber have tested at both tx & rx is up. > > > > > > Our GBIC is 1000BASE-ZX. > > > > > > Following massage back from TAC: > > > ZX can reach about 70km, it is the most powerful one GBIC. Be sure to > > > use attenuator, > > > otherwise GBIC may be damaged by overpower level laser!!! > > > > > > In order to explain different performance from your 3 GBIC, I think we > > > can look at the tx > > > level of max 6db to min 0db. If the one tx 0db, certainly rx will >below > > > 0db. If the other tx > > > 6db, 50m fiber is not enough to cause 6db loss, so interface is still > > > down and GBIC may be > > > damaged. > > > > > > 9/125um SM 1000Base-ZX SC > > > 6 tx max > > > 0 tx min > > > 0 rx max > > > -23 rx min > > > 70 km 42 mile > > > 1000Base-ZX can reach up to 100km (60mi) by using dispersion shifted SM > > > or low > > > attenuation SM > > > > > > Regards, > > > Eric, > > >Priscilla Oppenheimer >http://www.priscilla.com Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=20705&t=19114 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: how to test the GBIC is 1000BASE-ZX. in GSR [7:19114]
U, the link is referring to *minimum* distances, not maximum. So 50 metres is not OK. However, the original poster did say 50m, not 50 metres. If 50m was intended to refer to miles, not metres, you might be doing OK : -) Seems rather counter-intuitive - we usually have to worry about whether a link is too long. But from my rather limited understanding, I think in layman's terms if your link is too short then there will not be as much power loss as 'expected', so you are at risk of frying your receiving hardware. JMcL - Forwarded by Jenny Mcleod/NSO/CSDA on 21/09/2001 02:06 pm - "Priscilla Oppenheimer" To: [EMAIL PROTECTED] Subject: Re: how to test the GBIC is Sent by: 1000BASE-ZX. in GSR [7:19114] nobody@groups tudy.com 21/09/2001 12:32 pm Please respond to "Priscilla Oppenheimer" U, he said 50 meters not 50 kilometers. 50 meters should easily be OK. Priscilla At 07:58 PM 9/20/01, David C Prall wrote: > From the horses mouth: >http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/6000hw/mod_inst/ >02prep.htm > >The minimum link distance for ZX GBICs is 6.2 miles (10 km) with an 8-dB >attenuator installed at each end of the link. Without attenuators, the >minimum link distance is 24.9 miles (40 km). > >With a 50m cable you should not be getting any kind of link and are most >likely overdriving the Receive end. >Therefore, when you do find a 40km long >cable it may not work either. > >David C Prall [EMAIL PROTECTED] http://dcp.dcptech.com >- Original Message ----- >From: "Wang" >To: >Sent: Saturday, September 08, 2001 11:49 AM >Subject: how to test the GBIC is 1000BASE-ZX. in GSR [7:19114] > > > > Dear all : > > > > I 've are problem about testing cisco GBIC ZX in GSR. I just 've 50 M > > single mode fiber. > > Would you mind give me some information for test the GBIC. > > > > Story : > > Our client 've order 3 GBIC for Three-port Gigabit Ethernet Card . > > But, some problem in 2 GBIC can't pass connection test. > > > > > > Test 1 ) > > I use the SC fiber cross at both GI port at e.g ( Gi2/0 to Gi 3/0). > > The both 3GE-GBIC-SC status can not active & the all LED is off. > > I 've try to sweep the TX & RX position and sweep to next Gigabit > > Ethernet module..etc. > > Still no response . > > > > Test 2 ) > > Next test, it test is use the one fiber cable only (single side). Make > > the GBIC TX & RX in loop at single fiber. Just one GBIC can enable & > > up. Other GBIC still is no response ! > > Remark : In this section the fiber have tested at both tx & rx is up. > > > > Our GBIC is 1000BASE-ZX. > > > > Following massage back from TAC: > > ZX can reach about 70km, it is the most powerful one GBIC. Be sure to > > use attenuator, > > otherwise GBIC may be damaged by overpower level laser!!! > > > > In order to explain different performance from your 3 GBIC, I think we > > can look at the tx > > level of max 6db to min 0db. If the one tx 0db, certainly rx will below > > 0db. If the other tx > > 6db, 50m fiber is not enough to cause 6db loss, so interface is still > > down and GBIC may be > > damaged. > > > > 9/125um SM 1000Base-ZX SC > > 6 tx max > > 0 tx min > > 0 rx max > > -23 rx min > > 70 km 42 mile > > 1000Base-ZX can reach up to 100km (60mi) by using dispersion shifted SM > > or low > > attenuation SM > > > > Regards, > > Eric, Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=20648&t=19114 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: how to test the GBIC is 1000BASE-ZX. in GSR [7:19114]
U, he said 50 meters not 50 kilometers. 50 meters should easily be OK. Priscilla At 07:58 PM 9/20/01, David C Prall wrote: > From the horses mouth: >http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/6000hw/mod_inst/ >02prep.htm > >The minimum link distance for ZX GBICs is 6.2 miles (10 km) with an 8-dB >attenuator installed at each end of the link. Without attenuators, the >minimum link distance is 24.9 miles (40 km). > >With a 50m cable you should not be getting any kind of link and are most >likely overdriving the Receive end. >Therefore, when you do find a 40km long >cable it may not work either. > >David C Prall [EMAIL PROTECTED] http://dcp.dcptech.com >- Original Message - >From: "Wang" >To: >Sent: Saturday, September 08, 2001 11:49 AM >Subject: how to test the GBIC is 1000BASE-ZX. in GSR [7:19114] > > > > Dear all : > > > > I 've are problem about testing cisco GBIC ZX in GSR. I just 've 50 M > > single mode fiber. > > Would you mind give me some information for test the GBIC. > > > > Story : > > Our client 've order 3 GBIC for Three-port Gigabit Ethernet Card . > > But, some problem in 2 GBIC can't pass connection test. > > > > > > Test 1 ) > > I use the SC fiber cross at both GI port at e.g ( Gi2/0 to Gi 3/0). > > The both 3GE-GBIC-SC status can not active & the all LED is off. > > I 've try to sweep the TX & RX position and sweep to next Gigabit > > Ethernet module..etc. > > Still no response . > > > > Test 2 ) > > Next test, it test is use the one fiber cable only (single side). Make > > the GBIC TX & RX in loop at single fiber. Just one GBIC can enable & > > up. Other GBIC still is no response ! > > Remark : In this section the fiber have tested at both tx & rx is up. > > > > Our GBIC is 1000BASE-ZX. > > > > Following massage back from TAC: > > ZX can reach about 70km, it is the most powerful one GBIC. Be sure to > > use attenuator, > > otherwise GBIC may be damaged by overpower level laser!!! > > > > In order to explain different performance from your 3 GBIC, I think we > > can look at the tx > > level of max 6db to min 0db. If the one tx 0db, certainly rx will below > > 0db. If the other tx > > 6db, 50m fiber is not enough to cause 6db loss, so interface is still > > down and GBIC may be > > damaged. > > > > 9/125um SM 1000Base-ZX SC > > 6 tx max > > 0 tx min > > 0 rx max > > -23 rx min > > 70 km 42 mile > > 1000Base-ZX can reach up to 100km (60mi) by using dispersion shifted SM > > or low > > attenuation SM > > > > Regards, > > Eric, Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=20638&t=19114 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: how to test the GBIC is 1000BASE-ZX. in GSR [7:19114]
>From the horses mouth: http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/6000hw/mod_inst/ 02prep.htm The minimum link distance for ZX GBICs is 6.2 miles (10 km) with an 8-dB attenuator installed at each end of the link. Without attenuators, the minimum link distance is 24.9 miles (40 km). With a 50m cable you should not be getting any kind of link and are most likely overdriving the Receive end. Therefore, when you do find a 40km long cable it may not work either. David C Prall [EMAIL PROTECTED] http://dcp.dcptech.com - Original Message - From: "Wang" To: Sent: Saturday, September 08, 2001 11:49 AM Subject: how to test the GBIC is 1000BASE-ZX. in GSR [7:19114] > Dear all : > > I 've are problem about testing cisco GBIC ZX in GSR. I just 've 50 M > single mode fiber. > Would you mind give me some information for test the GBIC. > > Story : > Our client 've order 3 GBIC for Three-port Gigabit Ethernet Card . > But, some problem in 2 GBIC can't pass connection test. > > > Test 1 ) > I use the SC fiber cross at both GI port at e.g ( Gi2/0 to Gi 3/0). > The both 3GE-GBIC-SC status can not active & the all LED is off. > I 've try to sweep the TX & RX position and sweep to next Gigabit > Ethernet module..etc. > Still no response . > > Test 2 ) > Next test, it test is use the one fiber cable only (single side). Make > the GBIC TX & RX in loop at single fiber. Just one GBIC can enable & > up. Other GBIC still is no response ! > Remark : In this section the fiber have tested at both tx & rx is up. > > Our GBIC is 1000BASE-ZX. > > Following massage back from TAC: > ZX can reach about 70km, it is the most powerful one GBIC. Be sure to > use attenuator, > otherwise GBIC may be damaged by overpower level laser!!! > > In order to explain different performance from your 3 GBIC, I think we > can look at the tx > level of max 6db to min 0db. If the one tx 0db, certainly rx will below > 0db. If the other tx > 6db, 50m fiber is not enough to cause 6db loss, so interface is still > down and GBIC may be > damaged. > > 9/125um SM 1000Base-ZX SC > 6 tx max > 0 tx min > 0 rx max > -23 rx min > 70 km 42 mile > 1000Base-ZX can reach up to 100km (60mi) by using dispersion shifted SM > or low > attenuation SM > > Regards, > Eric, Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=20627&t=19114 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
how to test the GBIC is 1000BASE-ZX. in GSR [7:19114]
Dear all : I 've are problem about testing cisco GBIC ZX in GSR. I just 've 50 M single mode fiber. Would you mind give me some information for test the GBIC. Story : Our client 've order 3 GBIC for Three-port Gigabit Ethernet Card . But, some problem in 2 GBIC can't pass connection test. Test 1 ) I use the SC fiber cross at both GI port at e.g ( Gi2/0 to Gi 3/0). The both 3GE-GBIC-SC status can not active & the all LED is off. I 've try to sweep the TX & RX position and sweep to next Gigabit Ethernet module..etc. Still no response . Test 2 ) Next test, it test is use the one fiber cable only (single side). Make the GBIC TX & RX in loop at single fiber. Just one GBIC can enable & up. Other GBIC still is no response ! Remark : In this section the fiber have tested at both tx & rx is up. Our GBIC is 1000BASE-ZX. Following massage back from TAC: ZX can reach about 70km, it is the most powerful one GBIC. Be sure to use attenuator, otherwise GBIC may be damaged by overpower level laser!!! In order to explain different performance from your 3 GBIC, I think we can look at the tx level of max 6db to min 0db. If the one tx 0db, certainly rx will below 0db. If the other tx 6db, 50m fiber is not enough to cause 6db loss, so interface is still down and GBIC may be damaged. 9/125um SM 1000Base-ZX SC 6 tx max 0 tx min 0 rx max -23 rx min 70 km 42 mile 1000Base-ZX can reach up to 100km (60mi) by using dispersion shifted SM or low attenuation SM Regards, Eric, Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=19114&t=19114 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
