FP Rules Queuing Configuration
This chapter contains basic information about cpu-queue properties and complete sample configuration for cpu-queue properties.
DUT has many CPU queues for management/classification of control traffic and provides rate limiters for control plane protection. Different types of CPU port bound packets are queued in different cpu-queues each with different properties like rate, queue-limit, monitoring status and drop status.
Topology
Simple configuration of CPU Queuing
Default Values
R1#show cpu-queue details
* - Can not configure the parameter
Cpu queue Rate In PPS Lossy Status Monitor Status
Name Configured Default Configured Default Configured Default
========= ========== ======= ========== ========== ========== ===========
sflow - 32000 - *lossy - monitor
bgp - 1500 - lossless - monitor
vrrp - 500 - lossless - monitor
ldp-rsvp - 500 - lossless - monitor
rip - 500 - lossless - monitor
ospf - 2000 - lossless - monitor
dhcp - 100 - lossy - no-monitor
nd - 6000 - lossless - monitor
mpls - 500 - lossy - no-monitor
pim - 4000 - *lossy - *no-monitor
arp - 6000 - lossless - monitor
igmp - 4000 - *lossy - *no-monitor
bpdu - 10000 - lossless - monitor
ccm - 500 - lossy - no-monitor
bfd - 2000 - lossy - no-monitor
ptp - 1000 - lossy - no-monitor
isis - 500 - lossless - monitor
trill-isis - 1000 - lossless - monitor
acl - 200 - *lossy - *no-monitor
vxlan - 500 - lossy - monitor
Note: Enable feature before validating cpu-queue for that protocol.
Monitor option will generate operational log, if it reaches above 90%. Log generation will stop, when it goes below 90%.
1. 2001 Jan 07 22:29:03.345 : R1 : HSL : NOTIF : [CPU_RATE_HIGH_4]: Average CPU queue rate for bpdu is 90% (540 pkts/sec).
2. 2001 Jan 07 22:29:08.346 : R1 : HSL : NOTIF : [CPU_QUEUE_RECOVERED_4]: CPU queue rate for bpdu is back to normal. Current average rate is 89%.
Lossless option will drop the traffic at ingress interface. We can use "show interface counters indiscard-stats" to verify the drop. Packets will be incremented in IBP Discards column.
Lossy option will drop the traffic at cpu. We can use “show interface cpu counters queue-stats`” to verify the drop.
Configuring CPU Queuing Lossless
Do the following to configure CPU queuing on an interface.
#configure terminal | |
(config)#bridge 1 protocol rstp | Configure Bridge 1 |
(config)#int xe52/2 | |
(config)#switchport | Configure interface as L2 |
(config-cmap-qos)#bridge-group 1 | Configure bridge 1 in interface |
(config-cmap-qos)#int xe52/3 | |
(config-cmap-qos)#switchport | Configure interface as L2 |
(config)#bridge-group 1 | Configure bridge 1 in interface |
(config-cmap-qos)#exit | |
(config)#cpu-queue bpdu rate 600 lossless no-monitor | Configure bpdu cpu-queue with rate of 600 pps and lossless and no-monitor option |
(config)#commit | Committing the configuration |
Validation
Enter the commands listed in the sections below to confirm the configurations.
R1(config)#do show running-config | inc cpu
cpu-queue bpdu rate 600 lossless no-monitor
R1(config)#
R1(config)#do show cpu-queue details
* - Can not configure the parameter
Cpu queue Rate In PPS Lossy Status Monitor Status
Name Configured Default Configured Default Configured Default
========= ========== ======= ========== ========== ========== ===========
sflow - 32000 - *lossy - monitor
bgp - 1500 - lossless - monitor
vrrp - 500 - lossless - monitor
ldp-rsvp - 500 - lossless - monitor
rip - 500 - lossless - monitor
ospf - 2000 - lossless - monitor
dhcp - 100 - lossy - no-monitor
nd - 6000 - lossless - monitor
mpls - 500 - lossy - no-monitor
pim - 4000 - *lossy - *no-monitor
arp - 6000 - lossless - monitor
igmp - 4000 - *lossy - *no-monitor
bpdu 600 10000 lossless lossless no-monitor monitor
ccm - 500 - lossy - no-monitor
bfd - 2000 - lossy - no-monitor
ptp - 1000 - lossy - no-monitor
isis - 500 - lossless - monitor
trill-isis - 1000 - lossless - monitor
acl - 200 - *lossy - *no-monitor
vxlan - 500 - lossy - monitor
R1(config)#do clear interface cpu counters
R1(config)#do clear interface counters
R1(config)#do show interface counters rate
+-------------------+--------------+-------------+--------------+-------------+
| Interface | Rx bps | Rx pps | Tx bps | Tx pps |
+-------------------+--------------+-------------+--------------+-------------+
po1 436 0 2980 5
po2 768714 1372 769045 1373
xe52/1 0 0 44 0
xe52/2 0 0 263 0
xe52/3 669424827 99971 263 0
xe53/1 33 0 788 1
xe53/2 33 0 719 1
xe53/3 336 0 702 1
xe53/4 33 0 769 1
xe54/1 192176 343 192014 342
xe54/2 192166 343 192292 343
xe54/3 192150 343 192348 343
xe54/4 192204 343 192390 343
R1(config)#do show interface cpu counters rate
Load interval: 30 second
+-------------------+--------------+-------------+--------------+-------------+
| CPU Queue(%) | Rx bps | Rx pps | Tx bps | Tx pps |
+-------------------+--------------+-------------+--------------+-------------+
hw-bfd ( N/A) - - 101679 1374
bpdu (100%) - - 436856 600
ospf ( 0%) - - 84 0
bgp ( 0%) - - 44 0
R1(config)#do show interface cpu counters rate
Load interval: 30 second
+-------------------+--------------+-------------+--------------+-------------+
| CPU Queue(%) | Rx bps | Rx pps | Tx bps | Tx pps |
+-------------------+--------------+-------------+--------------+-------------+
hw-bfd ( N/A) - - 101574 1372
bpdu ( 99%) - - 433465 599
ospf ( 0%) - - 39 0
bgp ( 0%) - - 44 0
R1(config)#do show interface cpu counters queue-sta
E - Egress, I - Ingress, Q-Size is in bytes
+--------------------+--------+-----------------+-------------------+-----------------+-------------------+
| Queue/Class-map | Q-Size | Tx pkts | Tx bytes | Dropped pkts | Dropped bytes |
+--------------------+--------+-----------------+-------------------+-----------------+-------------------+
hw-bfd (E) 0 130582 9663068 0 0
bpdu (E) 2706080 57086 41576707 0 0
arp (E) 0 2 136 0 0
ospf (E) 0 35 4658 0 0
bgp (E) 0 95 7030 0 0
R1(config)#do show interface counters indiscard-stats
+-------------+------------------+---------------+---------------+-----------------+------------------+--------------+--------------------+
| Interface | Port Block Drops | Vlan Discards | ACL/QOS Drops | Policy Discards | EGR Port Unavail | IBP Discards | Total Discards |
+-------------+------------------+---------------+---------------+-----------------+------------------+--------------+--------------------+
xe52/3 0 0 0 0 0 13080579 13080579
Configuring cpu-queue with lossy
============================
Configuring CPU Queuing Lossy
Do the following to configure CPU queuing on an interface.
#configure terminal | |
(config)#cpu-queue bpdu rate 500 lossy no-monitor | Configure bpdu cpu-queue with rate of 500 pps and lossy and no-monitor option |
(config)#commit | Committing the configuration |
(config)#exit |
Validation
Enter the commands listed in the sections below to confirm the configurations.
R1(config)#do clear interface cpu counters
R1(config)#do clear interface counters
R1(config)#do show running-config | inc cpu
cpu-queue bpdu rate 500 lossy no-monitor
R1(config)#do show cpu-queue details
* - Can not configure the parameter
Cpu queue Rate In PPS Lossy Status Monitor Status
Name Configured Default Configured Default Configured Default
========= ========== ======= ========== ========== ========== ===========
sflow - 32000 - *lossy - monitor
bgp - 1500 - lossless - monitor
vrrp - 500 - lossless - monitor
ldp-rsvp - 500 - lossless - monitor
rip - 500 - lossless - monitor
ospf - 2000 - lossless - monitor
dhcp - 100 - lossy - no-monitor
nd - 6000 - lossless - monitor
mpls - 500 - lossy - no-monitor
pim - 4000 - *lossy - *no-monitor
arp - 6000 - lossless - monitor
igmp - 4000 - *lossy - *no-monitor
bpdu 500 10000 lossy lossless no-monitor monitor
ccm - 500 - lossy - no-monitor
bfd - 2000 - lossy - no-monitor
ptp - 1000 - lossy - no-monitor
isis - 500 - lossless - monitor
trill-isis - 1000 - lossless - monitor
acl - 200 - *lossy - *no-monitor
vxlan - 500 - lossy - monitor
R1(config)#do show interface counters rate
+-------------------+--------------+-------------+--------------+-------------+
| Interface | Rx bps | Rx pps | Tx bps | Tx pps |
+-------------------+--------------+-------------+--------------+-------------+
po1 780 0 2974 5
po2 769353 1373 769260 1373
xe52/1 0 0 11 0
xe52/2 0 0 248 0
xe52/3 669564071 100000 248 0
xe53/1 98 0 871 1
xe53/2 98 0 692 1
xe53/3 485 0 699 1
xe53/4 98 0 710 1
xe54/1 192647 343 192322 343
xe54/2 191965 342 192280 343
xe54/3 192466 343 192278 343
xe54/4 192295 343 192416 343
R1(config)#do show interface cpu counters rate
Load interval: 30 second
+-------------------+--------------+-------------+--------------+-------------+
| CPU Queue(%) | Rx bps | Rx pps | Tx bps | Tx pps |
+-------------------+--------------+-------------+--------------+-------------+
hw-bfd ( N/A) - - 101505 1371
bpdu ( 99%) - - 345547 499
ospf ( 0%) - - 74 0
bgp ( 0%) - - 44 0
R1(config)#do show interface cpu counters rate
Load interval: 30 second
+-------------------+--------------+-------------+--------------+-------------+
| CPU Queue(%) | Rx bps | Rx pps | Tx bps | Tx pps |
+-------------------+--------------+-------------+--------------+-------------+
hw-bfd ( N/A) - - 101505 1371
bpdu ( 99%) - - 345547 499
ospf ( 0%) - - 74 0
bgp ( 0%) - - 44 0
R1(config)#do show cpu-queue details
cpu-queue bpdu rate 500 lossy no-monitor
R1(config)#
R1(config)#
R1(config)#do show interface cpu counters queue-stats
E - Egress, I - Ingress, Q-Size is in bytes
+--------------------+--------+-----------------+-------------------+-----------------+-------------------+
| Queue/Class-map | Q-Size | Tx pkts | Tx bytes | Dropped pkts | Dropped bytes |
+--------------------+--------+-----------------+-------------------+-----------------+-------------------+
hw-bfd (E) 0 78216 5787984 0 0
bpdu (E) 978848 39290 27124511 7818876 6550244016
arp (E) 0 2 136 0 0
ospf (E) 0 21 3070 0 0
bgp (E) 0 55 4070 0 0
R1(config)#do show interface counters indiscard-stats
+-------------+------------------+---------------+---------------+-----------------+------------------+--------------+--------------------+
| Interface | Port Block Drops | Vlan Discards | ACL/QOS Drops | Policy Discards | EGR Port Unavail | IBP Discards | Total Discards |
+-------------+------------------+---------------+---------------+-----------------+------------------+--------------+--------------------+
xe53/3 4 0 0 0 4 0 4
xe54/1 3 0 0 0 3 0 3
xe54/2 2 0 0 0 2 0 2
xe54/3 1 0 0 0 1 0 1
xe54/4 3 0 0 0 3 0 3
1.