thank you h**p://awanetwork.blogspot.com/2007/09/custom-queueing.html
QoS | Custom Queueing
CQ implementation WRR, up to 16 user queues, threshold based on number of bytes. Service use Round-robin we need requires configuration. CQ is used to create a bandwidth reservation in output queue of an interface. So no direction option on applied to the interface, fact that queueing is always outbound.
I have simple sample of CQ, objective is guaranteed the following amount of bandwidth that traffic leaving its Ethernet interface. I want 3 traffic define are ftp, telnet www and default for else logical. Each queue would be guaranteed bandwidth in a ratio of 5:2:2:1 on a total value 16000 bytes or 128 kbps, which results in 8000/16000, 3200/16000, 3200/16000, 1600/16000. With the CQ if there is traffic of type A and B waiting to be sent, but no traffic of type C, type A and B are not limited to a maximum of 50% and 20%. Instead A and B are guaranteed a minimum of 50% and 20% in the case of congestion.
#final running-config
...
queue-list 1 protocol ip 1 tcp ftp
queue-list 1 protocol ip 2 tcp telnet
queue-list 1 protocol ip 3 tcp www
queue-list 1 default 4
queue-list 1 queue 1 byte-count 8000
queue-list 1 queue 2 byte-count 3200
queue-list 1 queue 3 byte-count 1600
interface FastEthernet0/0
ip address 192.168.0.1 255.255.255.0
duplex auto
speed auto
custom-queue-list 1
...
#step-by-step configuring define queue (required)
R1(config)#queue-list ?
<1-16> Queue list number
R1(config)#queue-list 1 ?
default Set custom queue for unspecified datagrams
interface Establish priorities for packets from a named interface
lowest-custom Set lowest number of queue to be treated as custom
protocol priority queueing by protocol
queue Configure parameters for a particular queue
stun Establish priorities for stun packets
R1(config)#queue-list 1 protocol ?
aarp AppleTalk ARP
appletalk AppleTalk
arp IP ARP
bridge Bridging
bstun Block Serial Tunnel
cdp Cisco Discovery Protocol
clns ISO CLNS
clns_es ISO CLNS End System
clns_is ISO CLNS Intermediate System
cmns ISO CMNS
compressedtcp Compressed TCP (VJ)
decnet DECnet
decnet_node DECnet Node
decnet_router-l1 DECnet Router L1
decnet_router-l2 DECnet Router L2
dlsw Data Link Switching (Direct encapsulation only)
http HTTP
ip IP
ipv6 IPV6
ipx Novell IPX
llc2 llc2
pad PAD links
pppoe PPP over Ethernet
qllc qllc protocol
rsrb Remote Source-Route Bridging
snapshot Snapshot routing support
stun Serial Tunnel
R1(config)#queue-list 1 protocol ip ?
<0-16> queue number
R1(config)#queue-list 1 protocol ip 1 ?
fragments Prioritize fragmented IP packets
gt Classify packets greater than a specified size
list To specify an access list
lt Classify packets less than a specified size
tcp Prioritize TCP packets 'to' or 'from' the specified port
udp Prioritize UDP packets 'to' or 'from' the specified port
R1(config)#queue-list 1 protocol ip 1 tcp ?
<0-65535> Port number
bgp Border Gateway Protocol (179)
chargen Character generator (19)
cmd Remote commands (rcmd, 514)
daytime Daytime (13)
discard Discard (9)
domain Domain Name Service (53)
drip Dynamic Routing Information Protocol (3949)
echo Echo (7)
exec Exec (rsh, 512)
finger Finger (79)
ftp File Transfer Protocol (21)
ftp-data FTP data connections (20)
gopher Gopher (70)
hostname NIC hostname server (101)
ident Ident Protocol (113)
irc Internet Relay Chat (194)
klogin Kerberos login (543)
kshell Kerberos shell (544)
login Login (rlogin, 513)
lpd Printer service (515)
nntp Network News Transport Protocol (119)
pim-auto-rp PIM Auto-RP (496)
pop2 Post Office Protocol v2 (109)
pop3 Post Office Protocol v3 (110)
smtp Simple Mail Transport Protocol (25)
sunrpc Sun Remote Procedure Call (111)
syslog Syslog (514)
tacacs TAC Access Control System (49)
talk Talk (517)
telnet Telnet (23)
time Time (37)
uucp Unix-to-Unix Copy Program (540)
whois Nicname (43)
www World Wide Web (HTTP, 80)
R1(config)#queue-list 1 protocol ip 1 tcp ftp ?
#step-by-step configuring specify queue (optional)
R1(config)#queue-list 1 ?
default Set custom queue for unspecified datagrams
interface Establish priorities for packets from a named interface
lowest-custom Set lowest number of queue to be treated as custom
protocol priority queueing by protocol
queue Configure parameters for a particular queue
stun Establish priorities for stun packets
R1(config)#queue-list 1 queue ?
<0-16> queue number
R1(config)#queue-list 1 queue 1 ?
byte-count Specify size in bytes of a particular queue
limit Set queue entry limit of a particular queue
R1(config)#queue-list 1 queue 1 byte-count ?
<1-16777215> size in bytes
o use byte-count for average number of bytes
o use limit for maximum number of packet
#step-by-step configuring applied on interface (required)
R1(config-if)#?
Interface configuration commands:
...
custom-queue-list Assign a custom queue list to an interface
...
R1(config-if)#custom-queue-list ?
<1-16> Custom queue list number
R1(config-if)#custom-queue-list 1 ?
#monitor or verify CQ (optional)
R1#sh int f0/0
FastEthernet0/0 is up, line protocol is up
Hardware is Gt96k FE, address is c200.02d4.0000 (bia c200.02d4.0000)
Internet address is 192.168.0.1/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Half-duplex, 10Mb/s, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:03, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: custom-list 1
Output queues: (queue #: size/max/drops)
0: 0/20/0 1: 0/20/0 2: 0/20/0 3: 0/20/0 4: 0/20/0
5: 0/20/0 6: 0/20/0 7: 0/20/0 8: 0/20/0 9: 0/20/0
10: 0/20/0 11: 0/20/0 12: 0/20/0 13: 0/20/0 14: 0/20/0
15: 0/20/0 16: 0/20/0
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
92 packets output, 9553 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
R1#sh queueing ?
interface
custom custom queueing list configuration
fair fair queueing configuration
priority priority queueing list configuration
random-detect random early detection configuration
| Output modifiers
R1#sh queueing custom ?
| Output modifiers
R1#sh queueing custom
Current custom queue configuration:
List Queue Args
1 4 default
1 1 protocol ip tcp port ftp
1 2 protocol ip tcp port telnet
1 3 protocol ip tcp port www
1 1 byte-count 8000
1 2 byte-count 3200
1 3 byte-count 1600
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