Sunday, March 6, 2011

1Gbps Ports on the Nexus 5000 Series Switches

The first 8 ports of a Cisco Nexus 5010 switch and the first 16 ports of a Cisco Nexus 5020 switch are switchable 1Gbps and 10Gbps ports. The default interface speed is 10Gbps.
To configure these ports for 1Gbps Ethernet, insert a supported 1Gbps Ethernet SFP transceiver into the applicable port and the set its speed using the speed interface subcommand.
The supported 1Gbps Ethernet SFP transceivers include GLC-T, GLC-SX-MM, and GLC-LH-SM.
Note: If the switch interface and inserted transceiver speed is mismatched, the SFP validation failed error message is displayed for the series of show interface commands.

n5010# sh int brief | in 1/1
Eth1/1        1      eth  access down    SFP not inserted            10G(D) --
n5010# *** After a GLC-LH-SM SFP is inserted into E1/1. ***
n5010# sh int brief | in 1/1
Eth1/1        1      eth  access down    SFP validation failed       10G(D) --
n5010# conf t
Enter configuration commands, one per line.  End with CNTL/Z.
n5010(config)# int e1/1
n5010(config-if)# speed ?
  100    100Mb/s
  1000   1Gb/s
  10000  10Gb/s

n5010(config-if)# speed 1000
n5010(config-if)# end
n5010# sh int brief | in 1/1
Eth1/1        1      eth  access down    Link not connected         1000(D) --
n5010# sh int e1/1 transceiver
    sfp is present
    name is CISCO-FINISAR
    type is 10Gbase-(unknown)
    part number is FTLF1318P2BCL-CS
    revision is 0000
    serial number is FNS11390EKF
    nominal bitrate is 1300 MBits/sec
    Link length supported for 9/125um fiber is 10 km(s)
    Link length supported for 50/125um fiber is 550 m(s)
    Link length supported for 62.5/125um fiber is 550 m(s)
    cisco id is --
    cisco extended id number is 4


1 comment:

  1. Hello Yap, So will the interface work even without the transceiver at 10G? Why am I not able to ping the interface. I am asking cos I am not in a location to plug in a transceiver but still need to use the device interface somehow.