04-30-2009 02:07 AM - edited 03-06-2019 05:28 AM
If you configure a percentage, is this based on the interface speed or the actual speed.
For example if I configure
1% on int G1/0/1 but the port auto-negotiates to a speed of 10 MB.
is the thresshold 1% of 10MB or from 1Gig
04-30-2009 04:07 AM
Hello Davy,
good question.
documentation never talks of speed but only of bandwidth
in command reference
http://www.cisco.com/en/US/docs/ios/interface/command/reference/ir_s7.html#wp1012391
and also in configuration guide
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/storm.html
the feature description tells of 1-seconds interval controlling inbound traffic.
The implementation is hardware checking the I/G bit (less significant bit of most significant byte of the MAC address).
Being configured as a percentage I think it is a percentage of actual speed of the link.
To be sure you should perform some tests.
Hope to help
Giuseppe
04-30-2009 04:16 AM
The "problem" is that you've to pick a relative big value to cover auto-negotiation to 10Mbps.
If it was the bandwidth of the interface you could say for example 1Mbps (even if the port negotiates to 10Mbps). It would be more predictable
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