MLAG em Switches CRS3xx – MikroTik – RouterOSv7

Multi-Chassis Link Aggregation Group ou MLAG é uma ideia que já existe há algum tempo. Ele permite a capacidade de formar canais LACP em vários switches físicos.

As implementações são proprietárias, mas a ideia de MLAG foi mencionada pela primeira vez em 802.1AX-2008 em 2008.

Começou a se tornar popular em rede de data centers no final dos anos 2000

O que torna a adição de MLAG ao conjunto de recursos RouterOS da MikroTik notável é que ele reduz a barreira de entrada para este recurso específico.

Para testar a nova funcionalidade do MLAG, decidimos configurar um laboratório com switches CRS326-24S + 2Q e roteadores CCR2004-1G-12S + 2XS.

CONFIGURAÇÕES:

RTR-01

/interface bridge
add name=Lo0
/interface bonding
add mode=802.3ad name=Po1 slaves=sfp-sfpplus3,sfp-sfpplus4 transmit-hash-policy=layer-2-and-3
/interface vlan
add interface=Po1 name=vlan3000 vlan-id=3000
/routing table
add fib name=""
/ip address
add address=100.126.0.1/29 interface=vlan3000 network=100.126.0.0
add address=100.127.0.1 interface=Lo0 network=100.127.0.1
/ipv6 address
add address=200:100:126::1 interface=vlan3000
add address=200:100:127::1/128 advertise=no interface=Lo0
/system identity
set name=RTR-01

RTR-02

/interface bridge
add name=Lo0
/interface bonding
add mode=802.3ad name=Po1 slaves=sfp-sfpplus3,sfp-sfpplus4 transmit-hash-policy=layer-2-and-3
/interface vlan
add interface=Po1 name=vlan3000 vlan-id=3000
/routing table
add fib name=""
/ip address
add address=100.126.0.2/29 interface=vlan3000 network=100.126.0.0
add address=100.127.0.2 interface=Lo0 network=100.127.0.2
/ipv6 address
add address=200:100:126::2 interface=vlan3000
add address=200:100:127::2/128 advertise=no interface=Lo0
/system identity
set name=RTR-02

SW-01

/interface bridge
add name=Bridge-MLAG vlan-filtering=yes
/interface bonding
add mlag-id=100 mode=802.3ad name=Po1 slaves=sfp-sfpplus1
add mlag-id=101 mode=802.3ad name=Po2 slaves=sfp-sfpplus2
/interface bridge mlag
set bridge=Bridge-MLAG peer-port=qsfpplus1-1
/interface bridge port
add bridge=Bridge-MLAG interface=Po1
add bridge=Bridge-MLAG interface=qsfpplus1-1 pvid=777
add bridge=Bridge-MLAG interface=Po2
/interface bridge vlan
add bridge=Bridge-MLAG tagged=Po1,Po2 vlan-ids=3000
/system identity
set name=CSW-01

SW-02

/interface bridge
add name=Bridge-MLAG vlan-filtering=yes
/interface bonding
add mlag-id=100 mode=802.3ad name=Po1 slaves=sfp-sfpplus1
add mlag-id=101 mode=802.3ad name=Po2 slaves=sfp-sfpplus2
/interface bridge mlag
set bridge=Bridge-MLAG peer-port=qsfpplus1-1
/interface bridge port
add bridge=Bridge-MLAG interface=Po1
add bridge=Bridge-MLAG interface=qsfpplus1-1 pvid=777
add bridge=Bridge-MLAG interface=Po2
/interface bridge vlan
add bridge=Bridge-MLAG tagged=Po1,Po2 vlan-ids=3000
/system identity
set name=CSW-02

Status do MLAG

######## MLAG Switches - 2 x CRS326 ############

[admin@CSW-01] > interface/bridge/mlag/monitor 
       status: connected
    system-id: 48:8F:5A:3A:44:BA
  active-role: primary

[admin@CSW-02] > interface/bridge/mlag/monitor                        
       status: connected
    system-id: 48:8F:5A:3A:44:BA
  active-role: secondary

######## RTP-01 LACP Router ############

[admin@RTR-01] > /interface bonding monitor Po1
                    mode: 802.3ad
            active-ports: sfp-sfpplus3,sfp-sfpplus4
          inactive-ports: 
          lacp-system-id: 48:8F:5A:00:4F:80
    lacp-system-priority: 65535
  lacp-partner-system-id: 48:8F:5A:3A:44:BA