I remember my first router (a Cisco 2514) had AUI ports and external MAU transceivers. Funny how GBICs and now SFPs are kind of the same thing.
From: Tyler Treat Sent: Saturday, March 28, 2015 1:55 PM To: [email protected] Subject: Re: [AFMUG] Cisco CWDM-mux-8 For some reason I was always under the impression these boxes handled all the magic light action themselves. Learn something every day with this group.... ___________________________ Mangled by my iPhone. ___________________________ Tyler Treat Corn Belt Technologies, Inc. [email protected] ___________________________ On Mar 28, 2015, at 1:52 PM, Mike Hammett <[email protected]> wrote: You can enable the use of most any SFP in a Cisco by disabling the SFP check, which would let it work with generic SFPs and Cisco would do whatever it does with non-Cisco SFPs. If you program the SFP to identify itself as a Cisco, the Cisco device doesn't know any different. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com ------------------------------------------------------------------------------ From: "Chuck McCown" <[email protected]> To: [email protected] Sent: Saturday, March 28, 2015 1:49:54 PM Subject: Re: [AFMUG] Cisco CWDM-mux-8 It is possible we don’t know what we were doing, but we could not get all the data on non cisco SFPs. They still worked OK. From: Tyler Treat Sent: Saturday, March 28, 2015 12:48 PM To: [email protected] Subject: Re: [AFMUG] Cisco CWDM-mux-8 Good info! Thanks guys! ___________________________ Mangled by my iPhone. ___________________________ Tyler Treat Corn Belt Technologies, Inc. [email protected] ___________________________ On Mar 28, 2015, at 1:46 PM, Mike Hammett <[email protected]> wrote: I've never heard of a properly programmed generic SFP not presenting all DDM information to Cisco. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com ---------------------------------------------------------------------------- From: "Chuck McCown" <[email protected]> To: [email protected] Sent: Saturday, March 28, 2015 1:44:12 PM Subject: Re: [AFMUG] Cisco CWDM-mux-8 There is something special embedded in Cisco SFPs that the equipment can detect. Generic SFPs can be detected. Kinda like a generic non HP print head in an HP printer. From: Mike Hammett Sent: Saturday, March 28, 2015 12:41 PM To: [email protected] Subject: Re: [AFMUG] Cisco CWDM-mux-8 Cisco gear doesn't know jack difference if you program the SFP properly. ;-) ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com ---------------------------------------------------------------------------- From: "Chuck McCown" <[email protected]> To: [email protected] Sent: Saturday, March 28, 2015 1:28:39 PM Subject: Re: [AFMUG] Cisco CWDM-mux-8 Don't count on non cisco branded SFP to be able to give you all the data metrics like RX power TX power etc. Cisco gear knows when it is not talking to its own stuff and will refuse to give you full features. -----Original Message----- From: Seth Mattinen Sent: Friday, March 27, 2015 8:04 PM To: [email protected] Subject: Re: [AFMUG] Cisco CWDM-mux-8 On 3/27/15 6:13 PM, Tyler Treat wrote: > Hey folks. Another department has a Cisco CWDM-mux-8 running on a link > out to a secondary site. > What do we need to utilize this for our own link - will any SFP be able to > transmit through it and come out the other end appropriately? No, you need CWDM SFPs in the right wavelengths, standard non-colored optics will not work. See the list in Table 3 here: http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/cwdm-transceiver-modules/product_data_sheet09186a00801a557c.html You don't need to use a Cisco-branded SFP, any with the right wavelengths will work. ~Seth
