Third party SFPs are good value. Many are made by the same manufacturers that make the Cisco parts. Verifying the manufacturer makes Cisco parts as well as third party goes a long way to ensuring a quality product.
Mack -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Nick Hilliard Sent: Monday, June 06, 2011 11:03 AM To: K bharathan Cc: [email protected] Subject: Re: [c-nsp] SFP module on 2921 ISR router On 06/06/2011 17:35, K bharathan wrote: > hi > i'm trying to use a 1000base SFP module in cisco 2921 ISR ; on the router > SFP appears to be assigned to G0/1; but when i put a SFP-LX-SM module > nothing happens; no lights no connectivity and int is not coming up; is > there any configuration required to make fibre port identified > the following are given as certifed in a cisco doc > GLC-LH-SM= 1000Base-LX/LH 9/125 1310 Single 10 km > GLC-ZX-SM= 1000Base-ZX 9/125 1550 Single 100 km > CWDM-SFP-1470= 1000Base-CWDM 50 1470 Single 100 km > > currently i'm using a converter (by TRANSITION Networks) (the SFP module in > this converter shows long range 20km) > which SFP module i can use? You can use a GLC-LH-SM. This module (in fact, range of modules) does not support DOM. As you correctly note, only the GLC-* SFPs are supported on this device: > http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6981.html#wp131775 Apparently, it is too much to expect Cisco to support their own transceivers. You could try "service unsupported-transceiver" in your configuration. It might work, or it might not - seemingly on newer code trains these days, it doesn't work as well as it used to. Alternatively, get yourself a third party GLC-LH-SM from a reputable dealer. There are lots of knock-offs available in the grey market, many of which are complete trash, and some of which are really good quality units. Nick _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
