Checking from 'show idprom' whether an old CISCO-FINISAR 1000BASE-LX SFP can be reused in a Catalyst 9300-M
1
Before replacing an old switch with a Cisco Catalyst 9300-M, the poster wanted to know whether the existing SFP could be reused and posted the 'show idprom interface gigabitEthernet 1/1/1' output: Vendor Name CISCO-FINISAR, Vendor Part Number FTLF1318P2BCL-C3, serial FNS15510U5B, 1310 nm, single mode, 10 km reach, 'Diag monitoring : Implemented', date code 111213, 'GE Comp code : 1000BASE-CX', BR_Nominal 1300 Mbps, plus the raw SEEPROM hex dump. 'show inventory' lists the port as '1000BaseLX SFP' but with empty PID and VID fields, so the poster could not match it against the compatibility matrix by product ID.
- Hardware: Cisco Catalyst 9300-M (new switch), unspecified old Cisco switch
- Transceivers: GLC-LH-SM (CISCO-FINISAR FTLF1318P2BCL-C3)
- Form factor: SFP
Symptoms / messages:
show inventory shows empty PID and VID for the SFP
idprom lists GE Comp code 1000BASE-CX for a 1310 nm LX optic
no fault; pre-migration compatibility check
Comments 2
A respondent said Finisar-built Cisco optics are generally compatible with only rare issues, and pointed to the Cisco optics compatibility matrix at tmgmatrix.cisco.com (which was temporarily malfunctioning), asking which model was being migrated from.
Another respondent identified the module from its serial number as a roughly 13-year-old GLC-LH-SM without DOM and asked the poster to confirm.