speed/duplex clarification in cisco 2611 router.

[Raja_D]

Hi, 

We have a cisco 2611 router for which I was trying to set the speed/duplex to 100/full, I am able to execute command as full-duplex over the interface Ethernet0/1 but could not set the speed to 100 as the command speed itselves is not able to get recognized by the router over the interface.

Also the speed/duplex is not visible when checked in the output "show int Ethernet0/1".. Need to know how much speed that this interface support.. kindly advise..

#show int Ethernet0/1
Ethernet0/1 is up, line protocol is up
Hardware is AmdP2, address is 0009.4312.a941 (bia 0009.4312.a941)
Internet address is 10.49.50.82/30
MTU 1500 bytes, BW 1024 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:27:36
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
30 second input rate 0 bits/sec, 1 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
1713 packets input, 126981 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
585 packets output, 42644 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

#show run int Ethernet0/1
Building configuration...

Current configuration:
!
interface Ethernet0/1
bandwidth 1024
ip address 10.49.50.82 255.255.255.252
no ip redirects
no ip unreachables
no ip directed-broadcast
no ip proxy-arp
no ip mroute-cache
load-interval 30
full-duplex
no fair-queue
no cdp enable
end

cisco 2611 (MPC860) processor (revision 0x00) with 26624K/6144K bytes of memory.
Processor board ID JAD060908QX (3077235151)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
Basic Rate ISDN software, Version 1.1.
2 Ethernet/IEEE 802.3 interface(s)
2 Serial(sync/async) network interface(s)
1 ISDN Basic Rate interface(s)
32K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

[Mark Malone]

Hi its 10mb port only its not a fastethernet port so it wont accept speed 100 try speed 10 as standard Ethernet , old router

[Joseph W. Doherty]

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Posting

As Mark has noted, an (original) Ethernet interface only supports 10 Mbps.

BTW, full-duplex was "added" later to 10 Mbps Ethernet, so you can run into issues using it.

[Raja_D]

Thank you Joseph and Mark for the clarification..