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pacsmanksFlag for United States of America

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cisco 2921

we have a fiber link connected to a facility and would like to know the or to change the bandwidth.  AT&T has upgraded the link from 5MB to 20MB. does anyone know how to do the changes in the router
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CSorg
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can you post a running config?
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NotLogical
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I am not really an expert in routers but here is what I did,
loged in then at MyRouter# i put the comand enable then show policy-map but nothing came up I also tried show traffic but did not work.  no errors came up????
can you do a

sh ver
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I tried the command
#show int gi X and #show int fa X but got back incomplete command but I tried
#show interface  and below is what I got:


 MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
    reliability 255/255, txload 1/255, rxload 1/255
 Encapsulation ARPA, loopback not set
 Keepalive set (10 sec)
 Full-duplex, 1000Mb/s, media type is RJ45
 output flow-control is unsupported, input flow-control is unsupp
 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 never
 Input queue: 2/75/0/0 (size/max/drops/flushes); Total output dro
 Queueing strategy: fifo
 Output queue: 0/40 (size/max)
 5 minute input rate 2000 bits/sec, 6 packets/sec
 5 minute output rate 497000 bits/sec, 33 packets/sec
    86864036 packets input, 3496563222 bytes, 0 no buffer
    Received 24346490 broadcasts, 0 runts, 0 giants, 0 throttles
    0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
    0 watchdog, 180327 multicast, 0 pause input
    0 input packets with dribble condition detected
    50139603 packets output, 179137979 bytes, 0 underruns
    0 output errors, 0 collisions, 2 interface resets
    21676755 unknown protocol drops
    0 babbles, 0 late collision, 0 deferred
    2 lost carrier, 0 no carrier, 0 pause output
    0 output buffer failures, 0 output buffers swapped out
software version

Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.0(1)M1, RE
EASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Wed 02-Dec-09 15:23 by prod_rel_team
The fiber optic line is up and going, the bandwidth was 5Mb changed to 20Mb
I ran the following commands on the Cisco 29xxx router:

enable
configuration terminal
interface giX/0.77 (since the other end is set to 0.77 dont know why 0.77 but that is the beauty of a hospital security haha)
bandwidth 20000
exit

copy run start

Thank you for all your help