[c-nsp] Cisco 2924XL Questions

Paul Stewart pauls at nexicom.net
Mon May 9 20:53:10 EDT 2005


Hi there...

We have several 2924XL switches deployed and will be working on phasing them
out in the next couple of years..

One of them is starting to get some heavier traffic on it and I'm just trying
to understand what the limit "should" be on a 100 meg ethernet link such as this:

FastEthernet0/24 is up, line protocol is up
  Hardware is Fast Ethernet, address is 0001.42f0.0b98 (bia 0001.42f0.0b98)
  Description: XXXXXXXXXXXXXXX
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 109/255, rxload 149/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:10, output 00:00:00, output hang never
  Last clearing of "show interface" counters never
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 58652000 bits/sec, 13995 packets/sec
  5 minute output rate 43073000 bits/sec, 12213 packets/sec
     3901173213 packets input, 2076126479 bytes
     Received 15112491 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 955252 multicast
     0 input packets with dribble condition detected
     1812714726 packets output, 1518360255 bytes, 0 underruns
     0 output errors, 0 collisions, 2 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

The interface resets are from the other end dropping during maintenance windows...

With 24 ports and a shared backplane, what can one of these switches handle
realistically per port and per switch?  Everything on these devices is copper...

Thanks in advance,

Paul Stewart



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