Juniper JUNOS OS 10.3 - SOFTWARE Manual page 1098

Complete Software Guide for Junos
Step-by-Step
Procedure
1002
®
OS for EX Series Ethernet Switches, Release 10.3
To configure a Virtual Chassis across multiple wiring closets and interconnect them to
form LAGs:
Configure the mastership priority of SWA-0 (member
1.
value ( 255 ), thereby ensuring that it functions as the master of the expanded Virtual
Chassis configuration:
[edit virtual-chassis]
user@SWA-0# set member 0 mastership-priority 255
Power on SWA-1.
2.
Prepare the members in wiring closet A for interconnecting with the member
3.
switches in wiring closet B by setting all of the SFP uplink module interfaces on
SWA-0 and two of the uplink module interfaces on SWA-1 as uplink VCPs:
user@SWA-0> request virtual-chassis vc-port set pic-slot 1 port 0
user@SWA-0> request virtual-chassis vc-port set pic-slot 1 port 1
user@SWA-0> request virtual-chassis vc-port set pic-slot 1 port 2
user@SWA-0> request virtual-chassis vc-port set pic-slot 1 port 3
user@SWA-0> request virtual-chassis vc-port set pic-slot 1 port 0 member 1
user@SWA-0> request virtual-chassis vc-port set pic-slot 1 port 1 member 1
NOTE: This example omits the specification of the
option in configuring the uplink VCPs for SWA-0 (and, later, for SWA-2).
The command applies by default to the switch where it is executed.
Power on SWA-2.
4.
If SWA-2 was previously configured, revert to the factory default configuration.
5.
Prepare SWA-2 in wiring closet B by configuring its mastership priority to be the
6.
highest possible value (255). Its member ID is currently
interconnected with the other members of the Virtual Chassis configuration. It is
operating as a standalone switch. Its member ID will change when it is
interconnected.
[edit virtual-chassis]
user@SWA-2# set member 0 mastership-priority 255
NOTE: SWA-2 is configured with the same mastership priority value
that we configured for SWA-0. However, the longer uptime of SWA-0
ensures that, once the interconnection is made, SWA-0 functions as
the master and SWA-2 functions as the backup.
Specify two of the SFP uplink module interfaces in SWA-2 as uplink VCPs. The
7.
member IDs are , because they are not yet interconnected with the other members
0
of the Virtual Chassis configuration:
) to be the highest possible
0
member member-id
, because it is not yet
0
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