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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