Cisco Nexus 5K - Configuration does not match the port capability

[Ramraj Sivagnanam Sivajanam]

Hi Everyone

I'm trying to connect a Cisco Router (FastEthernet - 10/100Mbps) to an SFP (1000base-T) in Cisco Nexus 5K but it doesn't work. I can an error message "Ethernet1/30: Configuration does not match the port capability". Can someone point me in the right direction, please.

Switch1# show int ethernet 1/30 capabilities
Ethernet1/30
  Model:                 N5K-C5548UP-SUP
  Type (SFP capable):    1000base-T
  Speed:                 1000,10000
  Duplex:                full
  Trunk encap. type:     802.1Q
  Channel:               yes
  Broadcast suppression: percentage(0-100)
  Flowcontrol:           rx-(off/on),tx-(off/on)
  Rate mode:             none
  QOS scheduling:        rx-(6q1t),tx-(1p6q0t)
  CoS rewrite:           no
  ToS rewrite:           no
  SPAN:                  yes
  UDLD:                  yes
  Link Debounce:         yes
  Link Debounce Time:    yes
  MDIX:                  no
  Pvlan Trunk capable:   yes
  TDR capable:           no
  Port mode:             Routed,Switched
  FEX Fabric:            yes
  POE capable:           no

Switch1# show int ethernet 1/030 transceiver
Ethernet1/30
    transceiver is present
    type is 1000base-T
    name is CISCO-METHODE
    part number is SP7041-E
    revision is E
    serial number is MTC1631053P
    nominal bitrate is 1300 MBit/sec
    Link length supported for copper is 100 m
    cisco id is --
    cisco extended id number is 4

Switch1(config-if)# speed ?

  100    100Mb/s

  1000   1Gb/s

  10000  10Gb/s

  auto   Auto negotiate speed

Switch1# config t

Enter configuration commands, one per line.  End with CNTL/Z.

Switch1(config)# interface Ethernet1/30

Switch1(config-if)#   speed 100

ERROR: Ethernet1/30: Configuration does not match the port capability.

Switch1# show version
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Copyright (c) 2002-2011, Cisco Systems, Inc. All rights reserved.
The copyrights to certain works contained herein are owned by
other third parties and are used and distributed under license.
Some parts of this software are covered under the GNU Public
License. A copy of the license is available at
http://www.gnu.org/licenses/gpl.html.

Software
  BIOS:      version 3.5.0
  loader:    version N/A
  kickstart: version 5.0(3)N2(1)
  system:    version 5.0(3)N2(1)
  power-seq: Module 1: version v1.0
             Module 3: version v2.0
  uC:        version v1.2.0.1
  SFP uC:    Module 1: v1.0.0.0
  BIOS compile time:       02/03/2011
  kickstart image file is: bootflash:/n5000-uk9-kickstart.5.0.3.N2.1.bin
  kickstart compile time:  6/13/2011 6:00:00 [06/13/2011 21:43:33]
  system image file is:    bootflash:/n5000-uk9.5.0.3.N2.1.bin
  system compile time:     6/13/2011 6:00:00 [06/13/2011 23:33:42]

Hardware
  cisco Nexus5548 Chassis ("O2 32X10GE/Modular Universal Platform Supervisor")
  Intel(R) Xeon(R) CPU         with 8299528 kB of memory.
  Processor Board ID FOC160160JN

  Device name: Switch1
  bootflash:    2007040 kB

Kernel uptime is 583 day(s), 19 hour(s), 37 minute(s), 0 second(s)

Last reset
  Reason: Unknown
  System version: 5.0(3)N2(1)
  Service:

plugin
  Core Plugin, Ethernet Plugin

Regards,

Ram

[Marvin Rhoads · Accepted solution]

Despite what the capabilities output tells you, I believe the 5548 only support 1 Gbps speed with the GLC-T. See the 5.0(3) bulletin which states:

Cisco NX-OS 5.0(3)N1(1) adds support for the following 1 Gigabit Ethernet optics on all SFP+ ports on the base chassis as well as on expansion modules of the Cisco Nexus 5500 platform (including Cisco Nexus 5548P, 5548UP, and 5596UP):

• GLC-T, GLC-SX-MM, and GLC-LH-SM