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--- сервис_qos [2009/03/26 08:16]
val created
+++ сервис_qos [2018/09/12 14:46]
val [Cisco]
@@ Line 1: / Line 1: @@
 ====== Сервис QOS ======
-Использование ipfw
+  * [[https://habr.com/post/420525/|Сети для самых матёрых. Часть пятнадцатая. QoS]]
+===== Cisco =====
+  * [[https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/91862-cat3750-qos-config.html|Cisco Catalyst 3750 QoS Configuration Examples]]
+  * [[https://reggle.wordpress.com/2013/05/14/qos-part-v-hardware-queues-on-35603750-switch-platform/|QoS part V: hardware queues on 3560/3750 switch platform]]
+  * [[http://cisco-conf.ru/qos/90-qos-catalyst-3750-.html|3750 QOS: Общие принципы]]
+==== Включение ====
+<code>
+mls qos
+</code>
+==== Назначение QOS для трафика c определенным DSCP  ====
+  * [[https://dreamforccie.wordpress.com/2010/04/23/convert-phb-af-to-dscp-decimal-and-vise-versa-its-so-easy/|Convert PHB AF to DSCP Decimal and Vise Versa: It’s So Easy!]]
+  * [[https://supportforums.cisco.com/t5/wan-routing-and-switching/dscp-qos-value/td-p/920725|DSCP - QOS value]]
+<code>
+TOS: 0x000068b8
+show mls qos maps dscp-output-q
+interface GigabitEthernet1/0/1
+ mls qos trust dscp
+</code>
+==== Назначение DSCP для трафика c определенным профилем ====
+<code>
+no ip access-list extended IP-Communicator
+ip access-list extended IP-Communicator
+! permit udp any any range 10000 20000
+! permit ip any host 195.19.32.11
+ permit ip host 195.19.32.11 any
+class-map match-all Class-B
+ match access-group name IP-Communicator
+policy-map sample-policy2
+ class Class-B
+  set dscp ef
+interface GigabitEthernet1/0/2
+ service-policy input sample-policy2
+</code>
+==== Назначение QOS для трафика отдельного порта ====
+<code>
+show mls qos maps cos-output-q
+interface GigabitEthernet1/0/1
+ mls qos cos 5
+ mls qos trust cos
+</code>
+==== Выделение полосы в магистральном соединении для трафика с определенным QOS ====
+<code>
+sh mls qos queue-set
+show mls qos interface g1/0/47 queueing
+interface GigabitEthernet1/0/47
+! Full priority for q1
+ srr-queue bandwidth shape 0 0 0 0
+ srr-queue bandwidth share 255 1 1 1
+! 1/20 band for q1
+ srr-queue bandwidth shape 20 0 0 0
+ srr-queue bandwidth share 1 1 1 1
+clear mls qos interface g1/0/47 statistics
+show mls qos interface g1/0/47 statistics | inc queue
+</code>
 ===== Равномерное ограничение полосы для всех с исключениями =====
+==== FreeBSD (ipfw) ====
 <code>
-[gX:~] # cat /etc/ipfw.conf
+[gate:~] # cat /etc/ipfw.conf
-pipe 1 config bw 64kbit/s mask dst-ip 0xffffffff
+</code><code>
-pipe 2 config bw 100mbit/s
+pipe 1 config bw 100mbit/s
+pipe 2 config bw 64kbit/s mask dst-ip 0xffffffff
-add 10 pipe 2 ip from any to 192.168.100+X.2
+add 10 pipe 1 ip from any to 192.168.100+X.2
-add 20 pipe 1 ip from any to 192.168.100+X.0/24
+add 20 pipe 2 ip from any to 192.168.100+X.0/24
 add 100 allow ip from any to any
+</code><code>
-[gX:~] # cat /etc/rc.conf
+[gate:~] # cat /etc/rc.conf
-…
+</code><code>
+...
+dummynet_enable=yes
 firewall_enable="YES"
 firewall_type="/etc/ipfw.conf"
-…
+</code><code>
+[gate:~] # /etc/rc.d/ipfw start
+[gate:~] # ipfw pipe show
+</code>
+===== Балансировка нагрузки между провайдерами =====
+==== FreeBSD (pf) ====
+http://www.openbsd.org/faq/pf/pools.html
+<code>
+[gate:~] # cat /etc/pf.conf
+</code><code>
+lan_net = "192.168.1X.0/24"
+int_if  = "tap0"
+ext_if1 = "fxp0"
+ext_if2 = "rl0"
+ext_gw1 = "10.10.105.100"
+ext_gw2 = "172.16.7.2"
+nat on $ext_if1 from $lan_net to any -> ($ext_if1)
+nat on $ext_if2 from $lan_net to any -> ($ext_if2)
-[gX:~] # kldload dummynet
+pass in on $int_if route-to \
+    { ($ext_if1 $ext_gw1), ($ext_if2 $ext_gw2) } round-robin \
+    proto tcp from $lan_net to any flags S/SA modulate state
+pass in on $int_if route-to \
+    { ($ext_if1 $ext_gw1), ($ext_if2 $ext_gw2) } round-robin \
+    proto { udp, icmp } from $lan_net to any keep state
-[gX:~] # /etc/rc.d/ipfw start
+pass out on $ext_if1 route-to ($ext_if2 $ext_gw2) from $ext_if2 \
+   to any
+pass out on $ext_if2 route-to ($ext_if1 $ext_gw1) from $ext_if1 \
+   to any
 </code>

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