Juniper JUNOS OS 10.3 - SOFTWARE Manual page 1108

Complete Software Guide for Junos
Configuring a Virtual Chassis with a Preprovisioned Configuration File
1012
®
OS for EX Series Ethernet Switches, Release 10.3
NOTE: A multimember Virtual Chassis configuration has two Routing Engines,
one in the master and the other in the backup. Therefore, we recommend
that you always use
configuration changes made for a Virtual Chassis. This ensures that the
configuration changes are saved in both Routing Engines.
A Virtual Chassis can be configured with either:
preprovisioned configuration—Allows you to deterministically control the member ID
and role assigned to a member switch by tying it to its serial number.
nonprovisioned configuration—The master sequentially assigns a member ID to other
member switches. The role is determined by the mastership priority value and other
factors in the master election algorithm.
This topic includes:
Configuring a Virtual Chassis with a Preprovisioned Configuration File on page 1012
Configuring a Virtual Chassis with a Nonprovisioned Configuration File on page 1013
To configure a Virtual Chassis using a preprovisioned configuration:
Make a list of the serial numbers of all the switches to be connected in a Virtual Chassis
1.
configuration.
Note the desired role ( routing-engine
2.
member with a
routing-engine
you configure the member with a
or backup.
Interconnect the member switches using the dedicated VCPs on the rear panel of
3.
switches. See Connecting a Virtual Chassis Cable to an EX4200 Switch.
NOTE: Arrange the switches in sequence, either from top to bottom or
from bottom to top (0–9).
Power on only the switch that you plan to use as the master switch (SWA-0). Do not
4.
power on the other switches at this time.
Run the EZ Setup program on SWA-0, specifying the identification parameters. See
5.
"Connecting and Configuring an EX Series Switch (CLI Procedure)" on page 187 for
details.
rather than simply
commit synchronize
or linecard ) of each switch. If you configure the
role, it is eligible to function as a master or backup. If
role, it is not eligible to become a master
linecard
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commit