Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual page 1014

Complete Software Guide for Junos
910
®
OS for EX Series Ethernet Switches, Release 10.4
Figure 14: Traffic Redirected by Fast Failover After SFP Uplink Module
VCP Link Failure
In a ring topology that uses SFP uplink module VCPs, there are four ports per module.
Consecutive pairs of ports are automatically configured as backup ports for each other.
For example, if a Virtual Chassis member has an SFP uplink module installed, uplink
module VCPs and
ge-0/1/0
each other. Similarly, ports
ports for each other.
Similarly, in a ring topology that uses XFP uplink module VCPs, there are only two ports
per uplink module. Each port is automatically configured to back up the other port in the
uplink module (for example,
Fast Failover in a Virtual Chassis Configuration Using Multiple Ring Topologies
Fast failover is supported in a Virtual Chassis configuration with a multiple-ring topology,
as shown in Figure 15 on page 911.
are automatically configured as backup ports for
ge-0/1/1
ge-0/1/2 and ge-0/1/3 are automatically configured as backup
xe-0/1/0 is the backup for xe-0/1/1 ).
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