Supported Platforms
Configuring Fast Failover in an EX Series Virtual Chassis
 | Note: This topic does not apply to EX2200 Virtual Chassis and EX8200 Virtual Chassis. |
The Virtual Chassis fast failover feature is a hardware-assisted failover mechanism that automatically reroutes traffic and reduces traffic loss in the event of a link or switch failure. If a link between two members fails, traffic flow between those members must be rerouted quickly so that there is minimal traffic loss.
Fast failover is enabled by default on dedicated Virtual Chassis ports (VCPs). You must manually enable fast failover on uplink ports that have been configured as VCPs or on EX3300 uplink ports that are configured as VCPs by default.
Before you begin configuring fast failover, ensure that the dedicated VCPs or uplink VCPs are connected in a ring topology.
- To reenable the fast failover feature on all dedicated
VCPs in a ring:
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user@switch# delete virtual-chassis fast-failover vcp disable - To configure the fast failover feature on all XFP uplink
VCPs in a ring:
[edit]
user@switch# set virtual-chassis fast-failover xe - To configure the fast failover feature on all SFP uplink
VCPs in a ring:
[edit]
user@switch# set virtual-chassis fast-failover ge
