Link Aggregation - Dell PowerConnect J-EX4200-24T Software Manual

Dell PowerConnect J-Series Ethernet Switch Complete Software Guide for Junos OS

Link Aggregation

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Virtual Chassis fast failover—A hardware-assisted failover mechanism that
automatically reroutes traffic and reduces traffic loss in the event of a link failure.
Virtual Chassis split and merge—If there is a disruption to the Virtual Chassis
configuration due to member switches failing or being removed from the configuration,
the Virtual Chassis configuration splits into two separate Virtual Chassis.
You can combine multiple physical Ethernet ports to form a logical point-to-point link,
known as a link aggregation group (LAG) or bundle. A LAG provides more bandwidth than
a single Ethernet link can provide. Additionally, link aggregation provides network
redundancy by load-balancing traffic across all available links. If one of the links should
fail, the system automatically load-balances traffic across all remaining links.
You can select up to eight Ethernet interfaces and include them within a LAG. In a
J-EX4200 Virtual Chassis configuration, the interfaces that form a LAG can be on different
members of the Virtual Chassis. See "Understanding Virtual Chassis Configurations and
Link Aggregation" on page 702.
For more information on high availability features, see the Junos OS High Availability
Configuration Guide at
http://www.juniper.net/techpubs/software/junos/
Virtual Chassis Overview on page 691
Understanding Virtual Chassis Components on page 694
Understanding Virtual Chassis Configurations and Link Aggregation on page 702
Understanding VRRP on J-EX Series Switches on page 1425
.