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Webcast-Catalyst9k

Internet Slow Connection

hi experts,

we had an issue where our internet was very slow. i've checked on our router logs and found a lot of these:

Mar  9 2010 14:27:43 SGT: %IP_VFR-4-FRAG_TABLE_OVERFLOW: ATM0: the fragment table has reached its maximum threshold 16

i've found this on cisco.com and found it vague and stuck how to rectify it.

IP_VFR Messages
The following are IP Virtual Fragment Reassembly (VFR) subsystem messages.

Error Message    
%IP_VFR-4-FRAG_TABLE_OVERFLOW : [chars]: the fragment table has reached its maximum threshold [dec]

Explanation    The number of datagrams being reassembled at any one time has reached it maximum limit.

Recommended Action    Increase the maximum number of datagrams that can be reassembled by entering the ip virtual-reassembly max-reassemblies number command, with number being the maximum number of datagrams that can be reassembled at any one time.

kindly advise what value of max-reassembiles to input.

ROUTER(config-if)#ip virtual-reassembly max-reassemblies ?
  <1-1024>  Number of datagrams that can be reassembled at a time

ROUTER#sh ip virtual-reassembly atm0
ATM0:
   Virtual Fragment Reassembly (VFR) is ENABLED...
   Concurrent reassemblies (max-reassemblies): 16  -->
   Fragments per reassembly (max-fragments): 32  -->
   Reassembly timeout (timeout): 3 seconds
   Drop fragments: OFF

   Current reassembly count:0
   Current fragment count:0
   Total reassembly count:629162
   Total reassembly timeout count:25113

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