[c-nsp] Serial T1/E1 Card

[William]

Hi List,

Hopefully just a quick one, I'm currently investigating an issue where
we seem to be maxing out on our 2Mb circuit (E1 - I'm based in London)
at roughly 1.54Mb (Used an app to poll the interface every 2 seconds
via snmp) - I found this very strange because its the theoretical
maximum speed of a T1 circuit, but as we all know we shouldn't have
them type of circuits over here in the UK!

I've spoken to BT who provide the circuit and have confirmed that its
an 2Mb circuit, I have the following serial card in my Cisco 2600
router:

!Slot 0/0: type Serial 1T WAN
!Slot 0/0: hvers 1.0 rev J0
!Slot 0/0: part 800-01514-01, serial 24024110

The following is show int serial0/0 from the router on our end:

#sh int serial0/0
Serial0/0 is up, line protocol is up
  Hardware is PowerQUICC Serial
  Internet address is removed.
  MTU 1500 bytes, BW 1948 Kbit, DLY 20000 usec,
     reliability 255/255, txload 9/255, rxload 33/255
  Encapsulation HDLC, loopback not set
  Keepalive set (10 sec)
  Last input 00:00:05, output 00:00:00, output hang never
  Last clearing of "show interface" counters 07:11:38
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue :0/40 (size/max)
  5 minute input rate 259000 bits/sec, 300 packets/sec
  5 minute output rate 69000 bits/sec, 177 packets/sec
     5555260 packets input, 734437370 bytes, 0 no buffer
     Received 3021 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     3473051 packets output, 184796888 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions
     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up

Configuration for the interface looks like:

#show run int serial0/0
Building configuration...

Current configuration : 135 bytes
!
interface Serial0/0
 bandwidth 1948
 ip address removed
 no fair-queue
end

#

I'm also under the impression that the bandwidth 1948 statement is
purely informational?

Just after a sanity check from you guys, I've got to speak to the guys
on the other end of the circuit to ensure they aren't running any
funky limiting on their end (unlikely). Is the card that I have in my
router is it capable of 2Mb? In the past I've bought cards that are
compatibile with both T1/E1 lines (NM-1CE1T1_PRI for example).

Thanks for your time.

Will