flatter, simplified Layer 2 network topology that minimizes or eliminates the need for
loop prevention protocols such as Spanning Tree Protocol (STP).
You configure a QFX Series Virtual Chassis by configuring SFP+ or QSFP+ interfaces into
Virtual Chassis ports (VCPs). VCPs connect switches together to form a Virtual Chassis,
and are responsible for passing all data and control traffic between member switches
in the Virtual Chassis. All non-channelized QSFP+ uplink interfaces on standalone
QFX5100-96S switches can be configured into VCPs. All fixed SFP+ interfaces on
QFX5100-96S switches can also be configured into VCPs. See
Switches in a Virtual Chassis” on page 182
for a cabling example.
You can increase VCP bandwidth between member switches by configuring multiple
interfaces between the same two switches into VCPs. When multiple VCPs are
interconnecting the same two member switches, a Link Aggregation Group (LAG) bundle
is automatically formed when the VCPs are on interfaces supporting identical speeds.
For instance, if you have two 40-Gigabit QSFP+ interfaces configured as VCPs between
member switches, a LAG with two member links with 80Gbps of total bandwidth is
formed. 10-Gigabit SFP+ and 40-Gigabit QSFP+ interfaces configured as VCPs cannot
be members of the same LAG, however.
A QFX5100-96S Virtual Chassis can only be composed of QFX5100-96S switches
configured as standalone switches; the Virtual Chassis feature is not applicable to QFX
devices in a QFabric.
Related
Documentation
•
•
Field-Replaceable Units in a QFX5100 Switch on page 8
•
Port Panel of a QFX5100-24Q Switch on page 18
•
Port Panel of a QFX5100-48S Switch on page 16
•
Access Port and Uplink Port LEDs on a QFX5100 Switch on page 217
•
Installing and Removing QFX5100 Switch Hardware Components on page 193
•
Connecting QFX5100-96S Switches in a Virtual Chassis on page 182
Copyright © 2014, Juniper Networks, Inc.
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