Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 921)

Multi-Service IronWare Switching Configuration Guide 891
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sFlow event workflow
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Configuring steps
4. Enable sFlow.
5. Enable null0 sampling.
6. Configure null0 routes.
NOTE
Above commands can be performed in any order.
Feature characteristics
• IPv4, IPv4-VPN, IPv6 null0 routes can be sFlow sampled.
• Only explicitly configured null0 routes can be sFlow sampled. Implicit null0 drops cannot be
sFlow sampled.
• By default, null0 sFlow sampling feature is disabled.
Limitations
• When this feature is enabled, due to sampling of more packets (discarded packets) than the
usual number till now, the actual sampling rate for regular streams will be reduced.
• This feature does not support PBR related null0 drops.
• This feature does not support default null0 route drops.
Backward compatibility
The current sFlow functionalities and ACL based sFlow functionalities will co-exist with this feature.
As the dropped packets hit TM, if mirroring is enabled on that port, these dropped packets will also
get mirrored.
Enabling/disabling the null0 sFlow sampling
These commands include the enabling and disabling of the null0 sampling.
Enter the following command to enable sFlow sampling for null0 routes.
Brocade(config)#sflow null0-sampling
To disable null0 sampling, enter the following command.
Brocade(config)#no sflow null0-sampling
Syntax: [no] sflow null0-sampling
Configuring a null0 route
For configuring a route for null0 sampling, use the following command.
Brocade(config)#ip route 10.10.10.100/32 null0
Syntax: [no] [ip|ipv6] route ip-addr null0