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4500-packets drop - IOS 12.2.25SG Sup2+

Q.1. ' sho plat cpu packet stat' output shows Packets were dropped for the reason 'NoFloodPorts'. What does that mean ??

Packets Dropped In Processing by Reason

Reason Total 5 sec avg 1 min avg 5 min avg 1 hour avg

L2DstDrop 3 0 0 0 0

NoFloodPorts 539467

Q.2. PacketRaw Buffer is 100% allocated and used. Should I increase it ??

kbytes % in use kbytes % in use

PacketBufRaw 20355.00 100% 20355.00 100%

  • Other Network Infrastructure Subjects
Cisco Employee

Re: 4500-packets drop - IOS 12.2.25SG Sup2+

Nofloodports counter is similar to Color Blocking Logic (CBL) drops in 6500, which are expected if spanning tree is blocking for a VLAN on a port etc. For example, broadcast, mulitcast, or unknown unicast might still be received on a blocked port. It is normal to see this counter increment.

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