QoS (P4)

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5. Ví dụ của AutoQoS – Enterprise

a. Bật giai đoạn Auto-Discovery
Dùng lệnh auto discovery qos trên cổng s4/0. Trong ví dụ này, mặc dù là tùy chọn nhưng băng thông kết nối vẫn được xác định rõ. Với cấu hình này, dữ liệu sẽ được thu thập dựa vào giao thức NBAR

Router# configure terminal
Router(config)# interface s4/0
Router(config-if)# bandwidth 1540
Router(config-if)# auto discovery qos
Router(config-if)# exit

b. Bật giai đoạn tạo biểu mẫu và cài đặt
Sau khi giai đoạn AutoQoS – Enterprise kết thúc, dùng lệnh auto qos để bật giai đoạn thứ hai lên.

Router> enable
Router# configure terminal
Router(config)# interface s4/0
Router(config-if)# auto qos
Router(config-if)# exit

c. Kiểm tra cấu hình

Router# show auto discovery qos

Serial2/1.1

AutoQoS Discovery enabled for applications

Discovery up time: 2 hours, 42 minutes

AutoQoS Class information:

Class Voice:

Recommended Minimum Bandwidth: 517 Kbps/50% (PeakRate).

Detected applications and data:

Application/ AverageRate PeakRate Total

Protocol (kbps/%) (kbps/%) (byte)

--------- -------- -------- ----

rtp audio 2/<1 517/50 703104

Class Interactive Video:

Recommended Minimum Bandwidth: 24 Kbps/2% (AverageRate).

Detected applications and data:

Application/ AverageRate PeakRate Total

Protocol (kbps/%) (kbps/%) (byte)

--------- ----------- -------- -------

rtp video 24/2 5337/52 704574

Class Control:

Recommended Minimum Bandwidth: 0 Kbps/0% (AverageRate).

Detected applications and data:

Application/ AverageRate PeakRate Total

Protocol (kbps/%) (kbps/%) (byte)

--------- ----------- -------- ---------

h323 0/0 74/7 30212

rtcp 0/0 7/<1 1540

Class Streaming Video:

Recommended Minimum Bandwidth: 3 Kbps/<1% (AverageRate).

Detected applications and data:

Application/ AverageRate PeakRate Total

Protocol (kbps/%) (kbps/%) (byte)

-------- ----------- -------- ---------

Cuseeme 3/<1 6148/60 99038

Class Transactional:

Recommended Minimum Bandwidth: 1 Kbps/<1% (AverageRate).

Detected applications and data:

Application/ AverageRate PeakRate Total

Protocol (kbps/%) (kbps/%) (byte)

----------- ----------- -------- -------

sqlnet 1/<1 1706/16 40187

Class Bulk:

Recommended Minimum Bandwidth: 0 Kbps/0% (AverageRate).

Detected applications and data:

Application/ AverageRate PeakRate Total

Protocol (kbps/%) (kbps/%) (byte)

---------- ----------- -------- --------

ftp 0/0 313/30 74480

Class Scavenger:

Recommended Minimum Bandwidth: 1 Kbps (AverageRate)/0% (fixed).

Detected applications and data:

Application/ AverageRate PeakRate Total

Protocol (kbps/%) (kbps/%) (byte)

--------- ----------- -------- ----------

napster 1/<1 1429/13 33941

Class Management:

Recommended Minimum Bandwidth: 0 Kbps/0% (AverageRate).

Detected applications and data:

Application/ AverageRate PeakRate Total

Protocol (kbps/%) (kbps/%) (byte)

----------- ----------- -------- --------

dhcp 0/0 84/8 114480

ldap 0/0 169/16 55364

Class Routing:

Recommended Minimum Bandwidth: 0 Kbps/0% (AverageRate).

Detected applications and data:

Application/ AverageRate PeakRate Total

Protocol (kbps/%) (kbps/%) (byte)

---------- ----------- -------- ----------

icmp 0/0 2/<1 300

Class Best Effort:

Current Bandwidth Estimation: 350 Kbps/34% (AverageRate).

Detected applications and data:

Application/ AverageRate PeakRate Total

Protocol (kbps/%) (kbps/%) (byte)

---------- ----------- -------- ----------

unknowns 336/32 99457/97 949276

http 14/1 15607/15 41945

Suggested AutoQoS Policy based on a discovery uptime of 2 hours, 42 minutes:

!

class-map match-any AutoQoS-Voice

match protocol rtp audio

!

class-map match-any AutoQoS-Inter-Video

match protocol rtp video

!

class-map match-any AutoQoS-Signaling

match protocol sip

match protocol rtcp

!

class-map match-any AutoQoS-Transactional

match protocol citrix

!

class-map match-any AutoQoS-Bulk

match protocol exchange

policy-map AutoQoS-Policy

class AutoQoS-Voice

priority percent 1

set dscp ef

class AutoQoS-Inter-Video

bandwidth remaining percent 1

set dscp af41

class AutoQoS-Signaling

bandwidth remaining percent 1

set dscp cs3

class AutoQoS-Transactional

bandwidth remaining percent 1

random-detect dscp-based

set dscp af21

class AutoQoS-Bulk

bandwidth remaining percent 1

random-detect dscp-based

set dscp af11

class class-default

fair-queue

Router# show auto qos

!

policy-map AutoQoS-Policy-Se2/1.1

class AutoQoS-Voice-Se2/1.1

priority percent 70

set dscp ef

class AutoQoS-Inter-Video-Se2/1.1

bandwidth remaining percent 10

set dscp af41

class AutoQoS-Stream-Video-Se2/1.1

bandwidth remaining percent 1

set dscp cs4

class AutoQoS-Transactional-Se2/1.1

bandwidth remaining percent 1

set dscp af21

class AutoQoS-Scavenger-Se2/1.1

bandwidth remaining percent 1

set dscp cs1

class class-default

fair-queue

!

policy-map AutoQoS-Policy-Se2/1.1-Parent

class class-default

shape average 1024000

service-policy AutoQoS-Policy-Se2/1.1

!

class-map match-any AutoQoS-Stream-Video-Se2/1.1

match protocol cuseeme

!

class-map match-any AutoQoS-Transactional-Se2/1.1

match protocol sqlnet

!

class-map match-any AutoQoS-Voice-Se2/1.1

match protocol rtp audio

!

class-map match-any AutoQoS-Scavenger-Se2/1.1

match protocol napster

!

class-map match-any AutoQoS-Inter-Video-Se2/1.1

match protocol rtp video

!

rmon event 33333 log trap AutoQoS description "AutoQoS SNMP traps for Voice Drops" own

AutoQoS

Serial2/1.1: DLCI 58 -

!

interface Serial2/1.1 point-to-point

frame-relay interface-dlci 58

class AutoQoS-FR-Serial2/1-58

!

map-class frame-relay AutoQoS-FR-Serial2/1-58

frame-relay cir 1024000

frame-relay bc 10240

frame-relay be 0

frame-relay mincir 1024000

service-policy output AutoQoS-Policy-Se2/1.1-Parent

Router# show policy-map interface

Serial2/1.1: DLCI 58 -

Service-policy output: AutoQoS-Policy-Se2/1.1-Parent

Class-map: class-default (match-any)

725797 packets, 224584146 byte

5 minute offered rate 3468.000 bps, drop rate 2605000 bps

Match: any

Traffic Shaping

Target/Average Byte Sustain Excess Interval Increment

Rate Limit bits/int bits/int (ms) (byte)

1024000/1024000 6400 25600 25600 25 3200

Adapt Queue Packets Byte Packets Byte Shaping

Active Depth Delayed Delayed Active

- 1000 268047 48786251 268032 48777309 yes

Service-policy : AutoQoS-Policy-Se2/1.1

Class-map: AutoQoS-Voice-Se2/1.1 (match-any)

80596 packets, 5158144 byte

5 minute offered rate 105000 bps, drop rate 14000 bps

Match: protocol rtp audio

80596 packets, 5158144 byte

5 minute rate 105000 bps

Queueing

Strict Priority

Output Queue: Conversation 72

Bandwidth 70 (%)

Bandwidth 716 (kbps) Burst 17900 (Byte)

(pkts matched/byte matched) 82010/5248640

(total drops/byte drops) 12501/8.00064

QoS Set

dscp ef

Packets marked 82010

Class-map: AutoQoS-Inter-Video-Se2/1.1 (match-any)

50669 packets, 42473594 byte

5 minute offered rate 692000 bps, drop rate 513000 bps

Match: protocol rtp video

50669 packets, 42473594 byte

5 minute rate 692000 bps

Queueing

Output Queue: Conversation 73

Bandwidth remaining 10 (%) Max Threshold 64 (packets)

(pkts matched/byte matched) 51558/43218807

(depth/total drops/no-buffer drops) 9/37454/7588

QoS Set

dscp af41

Packets marked 52193

Class-map: AutoQoS-Stream-Video-Se2/1.1 (match-any)

79843 packets, 30678725 byte

5 minute offered rate 511000 bps, drop rate 428.000 bps

Match: protocol cuseeme

79843 packets, 30678725 byte

5 minute rate 511000 bps

Queueing

Output Queue: Conversation 74

Bandwidth remaining 1 (%) Max Threshold 64 (packets)

(pkts matched/byte matched) 82381/31658370

(depth/total drops/no-buffer drops) 0/63889/7245

QoS Set

dscp cs4

Packets marked 82395

Class-map: AutoQoS-Transactional-Se2/1.1 (match-any)

77805 packets, 8511468 byte

5 minute offered rate 157000 bps, drop rate 102000 bps

Match: protocol sqlnet

77805 packets, 8511468 byte

5 minute rate 157000 bps

Queueing

Output Queue: Conversation 75

Bandwidth remaining 1 (%) Max Threshold 64 (packets)

(pkts matched/byte matched) 80635/8820988

(depth/total drops/no-buffer drops) 64/50967/3296

QoS Set

dscp af21

Packets marked 80655

Class-map: AutoQoS-Scavenger-Se2/1.1 (match-any)

30723 packets, 7127736 byte

5 minute offered rate 136000 bps, drop rate 84000 bps

Match: protocol napster

30723 packets, 7127736 byte

5 minute rate 136000 bps

Queueing

Output Queue: Conversation 76

Bandwidth remaining 1 (%) Max Threshold 64 (packets)

(pkts matched/byte matched) 31785/7373950

(depth/total drops/no-buffer drops) 0/16381/6160

QoS Set

dscp cs1

Packets marked 31955

Class-map: class-default (match-any)

406161 packets, 130634479 byte

5 minute offered rate 2033000 bps, drop rate 1703000 bps

Match: any

Queueing

Flow Based Fair Queueing

Maximum Number of Hashed Queues 64

(total queued/total drops/no-buffer drops) 806/291482/13603