Link Aggregation between Cisco Catalyst and Avaya ERS

Let's make a small lab. By combining two physical links into one logical one between the switches of two different vendors using the LACP protocol.

Link Aggregation Control Protocol allows you to connect from two to eight 100 Mbit / s, 1 Gb / s or 10 Gb / s of Ethernet ports working over twisted pair or fiber, which allows you to achieve a resulting speed of up to 80 Gb / s. This allows you to increase the bandwidth of the channels and increase their reliability.

LACP is supported by both vendors, so we will use it.
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Despite the existence of the IEEE 802.3ad standard, many companies still use their vendor protocols. In the case of Cisco, this is PAgP. Avaya has this Nortel's MLT.

Unite 47 and 48 port and let through two virtual networks, for example for data and for telephony. We'll leave the first vlan too.

Let's start with Cisco.

enable conf t 

We create virtual networks. The second vlan for data.

 vlan 2 name "Data" exit 

Fifth for telephony.

 vlan 5 name "Voice" exit 

We scatter ports on virtual networks.

1-2 port will be in the first vlan.

 interface range gigabitEthernet 1/0/1-2 switchport access vlan 1 exit 

From 3 to 24 we will allocate a voice.

 interface range gigabitEthernet 1/0/3-24 switchport access vlan 5 exit 

From 25 to 46 for data transfer.

 interface range gigabitEthernet 1/0/25-46 switchport access vlan 2 exit 

Configure directly port 47 and 48. First, we make them trunked to pass two virtual networks through them.

 interface gigabitEthernet 1/0/47 switchport trunk encapsulation dot1q switchport mode trunk exit interface gigabitEthernet 1/0/48 switchport trunk encapsulation dot1q switchport mode trunk exit 

Now we indicate that they are in the same LACP aggregation group. There may be several groups if we want to make several aggregated links.

 interface gigabitEthernet 1/0/47 channel-protocol lacp channel-group 1 mode active exit interface gigabitEthernet 1/0/48 channel-protocol lacp channel-group 1 mode active exit 

Assign ip to manage.

 vlan 1 ip address 192.168.1.10 255.255.255.0 no sh exit 

Check how it works.

 show etherchannel summary 

 show lacp neighbor 

Now let's do Avaya.

 enable conf t 

By analogy, we create two virtual networks.

 vlan create 2 name "Data" type port vlan create 5 name "Voice" type port 

We denote that port 47 and 48 will be trunk. Avaya has no such thing. We simply indicate that we will tag using the 802.1Q standard.

 vlan ports 47,48 tagging tagAll 

Add ports to virtual networks. Port 1 and port 2 are left in the first vlan, the rest of the access ports are removed from it. In the fifth we add from 3 to 24 and trunk ports. Accordingly, in the second - ports from 25 to 46, plus trunks.

 vlan members remove 1 3-46 vlan members add 5 3-24,47-48 vlan members add 2 25-48 

Configure LACP. Here the aggregation group is indicated by the lacp key parameter, you can put any number, the main thing is the same.

 interface gigabitEthernet 47 lacp key 20 lacp mode active lacp timeout-time short lacp aggregation enable exit interface gigabitEthernet 48 lacp key 20 lacp mode active lacp timeout-time short lacp aggregation enable exit 

Assign ip to manage.

 interface vlan 1 ip address 192.168.1.20 255.255.255.0 exit 

We are checking.

 show mlt 

 show lacp port 47,48