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New Member

7246 interface force 100mb

I am trying to force f0/0 on a 7246 router to 100/full. But I don't see the speed command as an option on the interface. I was able to force full duplex but not speed. Is there a reason why? I assume the answer is easy, but I've never seen this before.


Re: 7246 interface force 100mb


I feel you are talking about 7206 series router..

Is your current speed visible/showing up when you issue show interface command ??

Also can you check top which type the ethernet port belongs to ? you can do this by issuing show diag command in your cli and check for the type.

In some cases the ethernet ports turned out to be normal ethernet instead of fastethernet in that case you will hve to live with only 10Mbps but since you have mentioned F0/0 i assume its a onboard port which comes up with the NPE and ofcourse you will be able to change the speed.

do post out the show version output here which will help to gather more info about your ios and interface type installed..


New Member

Re: 7246 interface force 100mb

It is a 7246vxr

Cisco Internetwork Operating System Software

IOS (tm) 7200 Software (UBR7200-K8P-M), Version 12.2(15)BC2h, RELEASE SOFTWARE (fc1)

Technical Support:

Copyright (c) 1986-2005 by cisco Systems, Inc.

Compiled Sat 30-Jul-05 12:47 by kellythw

Image text-base: 0x60008EB0, data-base: 0x61452000

ROM: System Bootstrap, Version 12.0(19990210:195103) [12.0XE 105], DEVELOPMENT SOFTWARE

BOOTLDR: 7200 Software (UBR7200-BOOT-M), Version 12.0(10)SC1, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

host name uptime is 33 weeks, 3 days, 6 hours, 15 minutes

System returned to ROM by power-on

System restarted at 03:16:20 CDT Tue Sep 13 2005

Running default software

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

If you require further assistance please contact us by sending email to

cisco uBR7246VXR (NPE300) processor (revision D) with 122880K/40960K bytes of memory.

Processor board ID SAB0430002C

R7000 CPU at 262Mhz, Implementation 39, Rev 2.1, 256KB L2, 2048KB L3 Cache

6 slot VXR midplane, Version 2.0

Last reset from power-on

X.25 software, Version 3.0.0.

1 FastEthernet/IEEE 802.3 interface(s)

1 Cable Modem network interface(s)

125K bytes of non-volatile configuration memory.

46976K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).

4096K bytes of Flash internal SIMM (Sector size 256K).

Configuration register is 0x2102

host name#sho int f0/0

FastEthernet0/0 is up, line protocol is up

Hardware is DEC21140A, address is 0002.fc84.2400 (bia 0002.fc84.2400)


Internet address is

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 7/255, rxload 13/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, 100BaseTX/FX

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 1d05h

Input queue: 0/75/0/172 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 5360000 bits/sec, 1203 packets/sec

5 minute output rate 2816000 bits/sec, 1120 packets/sec

121897272 packets input, 167045261 bytes

Received 159899 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

113809838 packets output, 1274866998 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

host name#conf t

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

host name(config)#int f0/0

host name(config-if)#speed?

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