Vlag Peer Gateway; Configuring Vlags In Multiple Layers - Lenovo RackSwitch G8264 Application Manual

vLAG Peer Gateway

Configuring VLAGs in Multiple Layers

© Copyright Lenovo 2016
vLAG Peer Gateway allows a vLAG switch to act as the active gateway for packets
that are addressed to the router MAC address of the vLAG peer. The feature
enables local forwarding of such packets without crossing the ISL trunk, therefore
improving ISL usage and avoiding potential traffic loss.
To make it functional, vLAG Peer Gateway must be configured on both vLAG peer
switches.
By default, the feature is disabled. To enable it, use the following command:
RS G8264(config)# vlag peer­gateway
Use the no form of the command to disable vLAG Peer Gateway.
To display information about the current vLAG Peer Gateway settings, use the
following commands:
RS G8264(config)# show vlag
RS G8264(config)# show vlag peer­gateway
Figure 21. VLAG in Multiple Layers
Layer 2/3 Border
LAG
VLAG 5
Layer 2 Region
with multiple levels
VLAG 3
VLAG 3
ISL
VLAG
Peers A
Switch C
VLAG 1
LAG
Switch G
Servers
Figure 21 shows an example of VLAG being used in a multi‐layer environment.
Following are the configuration steps for the topology.
VLAG 6
ISL
Switch A Switch B
Switch D Switch E
VLAG 2
LAG
LACP-capable
Switch
Chapter 12: Virtual Link Aggregation Groups
LACP-capable
Routers
LAG
VLAG
Peers C
LAG
VLAG 4
ISL
VLAG
Peers B
Switch F
LACP-capable
Server
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