Basic Vlag Configuration; Configuring The Isl - Lenovo RackSwitch G8264 Application Manual

Basic VLAG Configuration

Configuring the ISL

1. Configure STP if required. Use PVRST or MSTP mode only:
2. Configure the ISL ports and place them into a port LAG:
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Figure 19 shows an example configuration where two VLAG peers are used for
aggregating traffic from downstream devices.
Figure 19. Basic VLAGs
VLAG Peer 1
Mgmt IP: 10.10.10.1/24
VLAG 1
LACP 1000
VLAN 100
Client Switch
In this example, each client switch is connected to both VLAG peers. On each client
switch, the ports connecting to the VLAG peers are configured as a dynamic LACP
port LAG. The VLAG peer switches share a dedicated ISL for synchronizing VLAG
information. On the individual VLAG peers, each port leading to a specific client
switch (and part of the client switch's port LAG) is configured as a VLAG.
In the following example configuration, only the configuration for VLAG 1 on
VLAG Peer 1 is shown. VLAG Peer 2 and all other VLAGs are configured in a
similar fashion.
The ISL connecting the VLAG peers is shared by all their VLAGs. The ISL needs to
be configured only once on each VLAG peer.
RS G8264(config)# spanning­tree mode pvrst
RS G8264(config)# interface port 1­2
RS G8264(config­if)# switchport mode trunk
RS G8264(config­if)# lacp mode active
RS G8264(config­if)# lacp key 200
RS G8264(config­if)# exit
RS G8264(config)# vlag isl adminkey 200
ISL
1 2
2 3
LACP 200
8 9 7
Chapter 12: Virtual Link Aggregation Groups
VLAG Peer 2
Mgmt IP: 10.10.10.2/24
8
VLAG 2
LACP 2000
VLAN 100
Client Switch
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