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Настройка MLAG на коммутаторах QTECH QSW-6700
В данной статье рассмотрим пример конфигурации MCLAG на коммутаторах серии QSW-6700.
Обзор
Агрегация каналов с несколькими устройств (MСLAG) состоит из двух агрегированных портов (AG) на двух независимых устройствах. Для других устройств, доступ к которым осуществляется через этот MCLAG, два устройства можно рассматривать как одно логическое устройство, а два AG в domain можно рассматривать как один AG, тем самым повышая надежность связи с уровня платы до уровня устройства. См. рисунок ниже.
Рисунок 1. Виртуальный агрегированный порт (MCLAG)
Другой похожей технологией является стекирование, при котором несколько физических устройств объединяются и функционируют как единое логическое устройство. По сравнению со стекированием технология MCLAG имеет следующие преимущества:
-
Оба устройства сохраняют независимость. MCLAG упрощает развертывание и устраняет недостатки стекирования (например, сбой программного обеспечения на ведущем устройстве может вывести из строя весь стек).
-
Каждое устройство можно обновлять независимо, без влияния на работу другого.
-
Отсутствует единая точка отказа - даже при сбое одного устройства второе продолжает обслуживать трафик.
Классическим примером является подключение сервера к двум коммутаторам MCLAG-домена, с использованием VRRP для организации отказоустойчивого шлюза.
- Сервер подключается к обоим коммутаторам MCLAG-домена.
- На каждом коммутаторе настроен VRRP, который сервер использует как шлюз.
- Восходящий (uplink) трафик сервера распределяется между коммутаторами через агрегированные порты.
- Нисходящий (downlink) трафик балансируется между коммутаторами через ECMP.
- Если один коммутатор выходит из строя, VRRP гарантирует, что сервер продолжает использовать активный шлюз на втором коммутаторе, обеспечивая непрерывность работы сети.
Рисунок 2. Подключение сервера к MCLAG.
Пример конфигурации
Пример отказоустойчивого подключения через MCLAG с VRRP.
Сценарий:
Рисунок 3. Подключение MCLAG с VRRP к серверам.
|
Шаги конфигурации |
|
|
|
L1 |
Настройте SVI для peer-link (vlan100), агрегацию (ag100) для peer-link. L1(config)#vlan 100 L1(config-vlan100)#exit L1(config)#interface vlan 100 L1(config-if-vlan100)#ip address 192.168.1.1 255.255.255.0 L1(config-if-vlan100)#exit L1(config)#port-group 100 L1(config)#interface ethernet 1/0/55-56 L1(config-if-port-range)#port-group 100 mode active L1(config-if-port-range)#exit L1(config)#interface port-channel 100 L1(config-if-port-channe L100)#switchport mode trunk Set the port Port-Channe L100 mode Trunk successfully L1(config-if-port-channe L100)#exit
Настройте keepalive-link на Mgmt порту (Ethernet 0) L1(config)#interface ethernet 0 L1(config-if-ethernet0)#ip address 10.0.0.1 255.255.255.0 Настройте домен MCLAG. L1(config)#port-group 1 L1(config)#port-group 2 L1(config)#domain 1 L1(domain-if-1)#dad link udp L1(domain-if-1)#dad local 10.0.0.1 peer 10.0.0.2 L1(domain-if-1)#source 192.168.1.1 peer 192.168.1.2 interface port-channel 100 L1(domain-if-1)#port-channel 1 L1(domain-if-1)#port-channel 2 L1(domain-if-1)#exit
Добавьте SVI для серверов (vlan10) и настройте downlink-интерфейсы Eth 1/0/1 и Eth 1/0/2. L1(config)#vlan 10 L1(config-vlan100)#exit L1(config)#interface ethernet 1/0/1 L1(config-if-ethernet1/0/1)#port-group 1 mode active L1(config-if-ethernet1/0/1)#exit L1(config)#interface port-channel 1 L1(config-if-port-channe L1)#switchport mode trunk L1(config-if-port-channe L1)#switchport trunk allowed vlan 10 L1(config-if-port-channe L1)#exit L1(config)#int eth 1/0/2 L1(config-if-ethernet1/0/2)#port-group 2 mode active L1(config-if-ethernet1/0/2)#exit L1(config)#int port-channel 2 L1(config-if-port-channel2)#switchport mode trunk L1(config-if-port-channel2)#switchport trunk allowed vlan 10 L1(config-if-port-channel2)#exit
Настройте шлюз VRRP. L1(config)#interface vlan 10 L1(config-if-vlan10)#ip address 172.16.10.253 255.255.255.0 L1(config-if-vlan10)#exit L1(config)#router vrrp 10 L1(config-router)#virtual-ip 172.16.10.254 L1(config-router)#interface vlan 10 L1(config-router)#vrrp mode dual-active L1(config-router)#enable L1(config-router)#exit |
|
|
L2 |
Настройте SVI для peer-link (vlan100), агрегацию (ag100) для peer-link. L2(config)#vlan 100 L2(config-vlan100)#exit L2(config)#interface vlan 100 L2(config-if-vlan100)#ip address 192.168.1.2 255.255.255.0 L2(config-if-vlan100)#exit L2(config)#port-group 100 L2(config)#interface ethernet 1/0/55-56 L2(config-if-port-range)#port-group 100 mode active L2(config-if-port-range)#exit L2(config)#interface port-channel 100 L2(config-if-port-channel100)#switchport mode trunk L2(config-if-port-channel100)#exit
Настройте keepalive-link на Mgmt порту (Ethernet 0) L2(config)#interface ethernet 0 L2(config-if-ethernet0)#ip address 10.0.0.2 255.255.255.0 Настройте домен MCLAG. L2(config)#port-group 1 L2(config)#port-group 2 L2(config)#domain 1 L2(domain-if-1)#dad link udp L2(domain-if-1)#dad local 10.0.0.2 peer 10.0.0.1 L2(domain-if-1)#source 192.168.1.2 peer 192.168.1.1 interface port-channel 100 L2(domain-if-1)#port-channel 1 L2(domain-if-1)#port-channel 2 L2(domain-if-1)#exit
Добавьте SVI для серверов (vlan10) и настройте downlink-интерфейсы Eth 1/0/1 и Eth 1/0/2. L2(config)#vlan 10 L2(config-vlan100)#exit L2(config)#interface ethernet 1/0/1 L2(config-if-ethernet1/0/1)#port-group 1 mode active L2(config-if-ethernet1/0/1)#exit L2(config)#interface port-channel 1 L2(config-if-port-channel1)#switchport mode trunk L2(config-if-port-channel1)#switchport trunk allowed vlan 10 L2(config-if-port-channel1)#exit L2(config)#int eth 1/0/2 L2(config-if-ethernet1/0/2)#port-group 2 mode active L2(config-if-ethernet1/0/2)#exit L2(config)#int port-channel 2 L2(config-if-port-channe L2)#switchport mode trunk L2(config-if-port-channe L2)#switchport trunk allowed vlan 10 L2(config-if-port-channe L2)#exit
Настройте шлюз VRRP. L2(config)#interface vlan 10 L2(config-if-vlan10)#ip address 172.16.10.252 255.255.255.0 L2(config-if-vlan10)#exit L2(config)#router vrrp 10 L2(config-router)#virtual-ip 172.16.10.254 L2(config-router)#interface vlan 10 L2(config-router)#vrrp mode dual-active L2(config-router)#enable
L2(config-router)#exit |
|
|
Проверка |
Для проверки введите команды show mclag-state domain 1, show vrrp 1. |
|
|
L1/L2 |
L1#show mclag-state domain 1
DAD-link Keep Alive Status: OK DAD-link Protocol: UDP DAD-link Local IP: 10.67.0.35 DAD-link Peer IP: 10.67.0.7 DAD-link Keep Alive Time: 1000 ms DAD-link Session Timeout: 3000 ms
Peer-link Keep Alive Status: OK Peer-link Infor Sync Status: OK Peer-link Domain ID: 1 Peer-link Priority : 32768 Peer-link Local IP : 192.168.1.1 Peer-link Peer IP : 192.168.1.2 Peer-link Keep Alive Time: 1 s Peer-link Session Timeout: 6 s Peer-link Connection Timeout : 30 s (timer off) Peer-link Delay Restore Timer: 10 s (timer off) Peer-link Interface Status: Port-Channel 100 / UP
Current Role: < ACTIVE > Log Level: CRITICAL Local System MAC: 08-c6-b3-fa-ba-c5 MCLAG System MAC: 08-c6-b3-fa-ba-c5 No. Agg-group Interface Local Peer Consistency Port-M Lacp-M Speed Duplex MTU STP VLAN IGMP-S 1 Port-Channel 1 UP UP SUCCESS ok ok ok ok ok ok ok ok 2 Port-Channel 2 UP UP SUCCESS ok ok ok ok ok ok ok ok
L1#show vrrp 10 VrId 10 State is Master Virtual IP is 172.16.10.254 (Not IP owner) Interface is Vlan10 Priority is 100 Advertisement interval is 1 sec Preempt mode is TRUE Dual-active mode is TRUE
L2#show mclag-state domain 1 DAD-link Keep Alive Status: OK DAD-link Protocol: UDP DAD-link Local IP: 10.67.0.7 DAD-link Peer IP: 10.67.0.35 DAD-link Keep Alive Time: 1000 ms DAD-link Session Timeout: 3000 ms
Peer-link Keep Alive Status: OK Peer-link Infor Sync Status: OK Peer-link Domain ID: 1 Peer-link Priority : 32768 Peer-link Local IP : 192.168.1.2 Peer-link Peer IP : 192.168.1.1 Peer-link Keep Alive Time: 1 s Peer-link Session Timeout: 6 s Peer-link Connection Timeout : 30 s (timer off) Peer-link Delay Restore Timer: 10 s (timer off) Peer-link Interface Status: Port-Channel 100 / UP
Current Role: < STANDBY > Log Level: CRITICAL Local System MAC: 08-c6-b3-f9-47-e3 MCLAG System MAC: 08-c6-b3-fa-ba-c5
No. Agg-group Interface Local Peer Consistency Port-M Lacp-M Speed Duplex MTU STP VLAN IGMP-S 1 Port-Channel 1 UP UP SUCCESS ok ok ok ok ok ok ok ok 2 Port-Channel 2 UP UP SUCCESS ok ok ok ok ok ok ok ok
L2#show vrrp 10 VrId 10 State is Backup Virtual IP is 172.16.10.254 (Not IP owner) Interface is Vlan10 Priority is 100 Advertisement interval is 1 sec Preempt mode is TRUE Dual-active mode is TRUE
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Проверка статуса MCLAG
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Команда |
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Отображает информацию о состоянии MCLAG
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show mclag-state domain [id] |
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Отображает информацию о конфигурации MCLAG
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show mclag configuration |
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Отображает информацию о MAC адресах
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show mclag-mac domain [id] |
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Отображает информацию о ARP записях
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show mclag-arp domain [id] |
Смотрите так же
Важно!
Данная статья актуальна для устройств с версией ПО 8.2.3.333(QSW-4530/4900) и выше и 8.2.1.245(QSW-3750/4610/3420) и выше.
Перед обновление ознакомьтесь со статьёй "Переход на новую версию SSH"
Для настройки функционала подключения к коммутатору QSW-4530 с использование публич...
Разберем настройку TACACS+ на примере следующей схемы:
Пример конфигурации:
SWITCH#config
SWITCH(config)# tacacs-server authentication host 172.16.1.3 key 0 test primary
SWITCH(config)# authentication line vty login tacacsSWITCH(config)# tacacs-server timeout 30 Разберем команды п...
На коммутаторе QSW-4530 существует несколько вариантов назначения динамического vlan в данной статье рассмотрим mac-vlan и protocol-vlan.
MAC-VLAN
MAC-VLAN - используется для назначения номера Vlan в зависимости от мак-адреса клиента.
В качестве примера выполним наст...
К списку
