OS6860(E)_AOS_8.1.1.R01_Switch_Management_Guide
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Configuring Virtual Chassis<br />
Configuring Virtual Chassis<br />
• The control VLAN must be the same between the chassis comprising the virtual chassis.<br />
For more information on the Control VLAN, see “Configuring the Control VLAN” on page 13-21<br />
Configuring the Chassis Identifier<br />
To configure the Virtual Chassis feature, a unique chassis identifier must first be automatically or manually<br />
assigned to each of the switches that will form the Virtual Chassis group. Assigning the chassis identifier<br />
also enables the configuration of the additional virtual chassis parameters for the chassis.<br />
The virtual-chassis configured-chassis-id command is used to configure a unique chassis identifier for a<br />
switch within the virtual chassis group. For example:<br />
-> virtual-chassis chassis-id 1 configured-chassis-id 2<br />
Note: Changing the chassis-id will not cause the Control VLAN or Group ID to change. These parameters<br />
must also be manually changed if required.<br />
Duplicate chassis identifier<br />
In the event two chassis have the same operational chassis identifier value, one of them will be reported as<br />
Inconsistent role (instead of Master or Slave) and Duplicate-Chassis status. This will cause the operational<br />
chassis identifier of one of the chassis to be automatically renumbered to follow the duplicate chassis<br />
ID format. (i.e. 101). This numbering is reserved to represent a chassis whose chassis identifier is<br />
duplicate. All management interface commands must use this new operational chassis identifier to affect<br />
any configuration. The duplicate chassis identifier must be corrected by re-configuring the switch locally<br />
through the console or EMP port access. For example:<br />
-> virtual-chassis chassis-id 101 configured-chassis-id 2<br />
Configuring the Virtual Chassis Group Identifier<br />
A virtual chassis group identifier must be assigned to each of the switches that will form the Virtual Chassis<br />
group. Each of these switches must use the same group identifier, which identifies the switch as<br />
belonging to that virtual chassis group.<br />
The virtual-chassis chassis-group command is used to configure the same group identifier for each chassis<br />
within the virtual chassis group. For example:<br />
-> virtual-chassis chassis-group 1<br />
By default, the virtual chassis group identifier is set to “0”. In a network environment where more than one<br />
virtual chassis group may exist, configure each virtual chassis group with its own unique group identifier.<br />
Duplicate group identifiers are not supported.<br />
Configuring the Hello Interval<br />
Hello packets are used for establishing and maintaining the neighbor relationship between virtual chassis<br />
switches and ensures that communication between switches is bidirectional. Hello packets are sent periodically<br />
out VFL interfaces. Bidirectional communication is indicated when the switch sees itself listed in the<br />
neighbor's hello packet. The hello interval value determines how often these packets are sent.<br />
To configure the hello interval between the multi-chassis peers, use the virtual-chassis hello-interval<br />
command as shown below:<br />
page 13-20 Omni<strong>Switch</strong> <strong>AOS</strong> Release 8 <strong>Switch</strong> <strong>Management</strong> <strong>Guide</strong> May 2014