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New Member

Hard Setting Speed on 10gb Ports

Is it possible to manually change the speed of a tengigabitethernet port on a 4506 switch? When I go into the interface I am not presented with the "speed" command like I would be on a normal interface.

What I would like to do is hard set them to 1gb since the fiber connection too long to properly run at 10gb and is causing some performance issues.

Super Bronze

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Fiber ports don't usually have multiple speeds.  However, if your 10g port is SFP+, you should be able to use gig SFPs.

New Member

I believe they are SFP+ I

I believe they are SFP+ I will need to double check. I know I can just put in gig SFPs but I was trying to find a way around without having to buy anything.

Cisco Employee

Can you share below outputsh

Can you share below output

sh int tengig x/x

sh int tengig x/x transceiver details

sh run int tex/x

sh inventory




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New Member

Here you go, I was able to

Here you go, I was able to get everything except the "sh int tengig x/x transceiver details" it was not an option. I could do a "show int transceiver details" but it did not produce any output. The SFP that is in there should be a X2-10GB-SR.

3B-4506#sh int tengig 1/1
TenGigabitEthernet1/1 is up, line protocol is up (connected)
  Hardware is Ten Gigabit Ethernet Port, address is 0024.9719.4ec0 (bia 0024.9719.4ec0)
  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 10Gb/s, link type is auto, media type is 10GBase-SR
  input flow-control is on, output flow-control is off
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 7803000 bits/sec, 1328 packets/sec
  5 minute output rate 1593000 bits/sec, 962 packets/sec
     116208938 packets input, 74380462222 bytes, 0 no buffer
     Received 20029787 broadcasts (12661121 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     73166419 packets output, 18616178465 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out



3B-4506#sh run int tengig 1/1
Building configuration...

Current configuration : 134 bytes
interface TenGigabitEthernet1/1
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 150
 switchport mode trunk



3B-4506#sh inventory
NAME: "Switch System", DESCR: "Cisco Systems, Inc. WS-C4506-E 6 slot switch "
PID: WS-C4506-E        , VID:    , SN: FOX1251GNWF

NAME: "Linecard(slot 1)", DESCR: "Supervisor II+10GE with 2 10GE X2 ports, and 4 1000BaseX SFP ports"
PID: WS-X4013+10GE     , VID: V06, SN: JAE130201KY

NAME: "TenGigabitEthernet1/1", DESCR: "10Gbase-SR"
PID: TRT2005EN-C15TAA  , VID: 04 , SN: ONJ1521003Z

NAME: "GigabitEthernet1/3", DESCR: "1000BaseSX"
PID: FTLF8519P2BCL-CS  , VID: B  , SN: FNS13041JXP

NAME: "GigabitEthernet1/4", DESCR: "1000BaseSX"
PID: FTLF8519P2BCL-CS  , VID: B  , SN: FNS13041KR0

NAME: "Linecard(slot 2)", DESCR: "10/100/1000BaseT (RJ45)V with 48 10/100/1000 baseT voice power ports (Cisco/IEE"
PID: WS-X4548-GB-RJ45V , VID: V11, SN: JAE1247156F

NAME: "Linecard(slot 3)", DESCR: "10/100/1000BaseT (RJ45)V with 48 10/100/1000 baseT voice power ports (Cisco/IEE"
PID: WS-X4548-GB-RJ45V , VID: V11, SN: JAE1305215E

NAME: "Linecard(slot 4)", DESCR: "10/100/1000BaseT (RJ45)V with 48 10/100/1000 baseT voice power ports (Cisco/IEE"
PID: WS-X4548-GB-RJ45V , VID: V11, SN: JAE13041VXJ

NAME: "Fan", DESCR: "FanTray"
PID: WS-X4596-E        , VID:    , SN: FOX1251GPNE

NAME: "Power Supply 1", DESCR: "Power Supply ( AC 4200W )"
PID: PWR-C45-4200ACV   , VID: V03, SN: AZS12460A2J

NAME: "Power Supply 2", DESCR: "Power Supply ( AC 4200W )"
PID: PWR-C45-4200ACV   , VID: V03, SN: AZS12460ANE



Cisco Employee

Pls check this link.http:/

Pls check this link.



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