Alcatel-Lucent OmniSwitch 10K - Page 67

OmniSwitch OS6860/OS6900/OS10K Troubleshooting Guide Part No.032996-00 Rev.A
AOS Release 7.X and 8.X January 2015
Alcatel-Lucent Page 67 of 148
QoS starts allocating rules in IFP slice 7, and works towards IFP slice 4. Each slice is set up to look at a particular
set of fields in a packet. If all the entries in a slice are used, or the slice can’t be programmed to accommodate all the
fields needed in the condition, QoS moves on to the next lower slice.
Simple policy rules consuming only 1 TCAM entry
Single source IP
Configuration
policy condition c1 source IP 1.1.1.1
policy action a1 disposition accept
policy rule r1 condition c1 action a1
qos apply
TCAM Utilization
1 Rule is consumed on the NI
-> show qos slice
Slot/ Ranges Rules Counters Meters
Unit Type Total/Free CAM Total/Free Total/Free Total/Free
1/(0) IFP 32/32 0 128/128 128/128 128/128
1 128/127 128/127 128/128
2 128/125 128/125 128/128
3 128/127 128/127 128/128
4 256/256 256/256 256/256
5 256/256 256/256 256/256
6 256/256 256/256 256/256
7 256/255 256/255 256/256
8 256/255 256/254 256/254
9 256/255 256/256 256/256
1/(0) EFP 0/0 0 256/256 256/256 256/256
1 256/256 256/256 256/256
2 256/256 256/256 256/256
3 256/256 256/256 256/256
Single Source Network
Configuration
policy condition c1 source IP 1.1.1.0 mask 255.255.255.0
policy action a1 disposition accept
policy rule r1 condition c1 action a1
qos apply
TCAM Utilization
1 Rule is consumed on the NI
-> show qos slice
Slot/ Ranges Rules Counters Meters
Unit Type Total/Free CAM Total/Free Total/Free Total/Free
1/(0) IFP 32/32 0 128/128 128/128 128/128
1 128/127 128/127 128/128
2 128/125 128/125 128/128
3 128/127 128/127 128/128
4 256/256 256/256 256/256
5 256/256 256/256 256/256
6 256/256 256/256 256/256
7 256/255 256/255 256/256
8 256/255 256/254 256/254
9 256/255 256/256 256/256
1/(0) EFP 0/0 0 256/256 256/256 256/256
1 256/256 256/256 256/256
2 256/256 256/256 256/256
3 256/256 256/256 256/256
Mixing single source IP and destination IP in a policy condition will consume only one TCAM entry
Configuration