Specifications

Using Virtual Routers
ExtremeWare XOS 11.0 Concepts Guide 99
(previous to release 11.0 these virtual routers were named VR-0, VR-1, and VR-2, respectively). The
following describes each system virtual router:
• VR-Mgmt
This virtual router is called VR-0 in ExtremeWare XOS releases prior to 11.0. VR-Mgmt enables
remote management stations to access the switch through Telnet, SSH, and SNMP sessions; and it
owns the management port. No other ports can be added to this VR-Mgmt, and the management
port cannot be removed from it.
The Mgmt VLAN is created in the VR-Mgmt during the ExtremeWare XOS system boot-up. No other
VLAN can be created in this virtual router, and the Mgmt VLAN cannot be deleted from it.
No routing protocol is running or can be added to this virtual router.
• VR-Control
This virtual router is called VR-1 in ExtremeWare XOS releases prior to 11.0. VR-Control is used for
internal communications between all the modules and subsystems in the switch. It has no external
visible ports, and you cannot assign any port to it.
This virtual router, VR-Control, has no VLAN interface, and no VLAN can be created for it.
No routing protocol is running or can be added to this virtual router.
• VR-Default
This virtual router is called VR-2 in ExtremeWare XOS releases prior to 11.0. VR-Default is the
default virtual router created by the ExtremeWare XOS system. All data ports in the switch are
assigned to this virtual router by default. Any data port can be added to and deleted from this
virtual router.
Users can create and delete VLANs in this virtual router. The Default VLAN is created in this virtual
router during the ExtremeWare XOS system boot-up. The Default VLAN cannot be deleted from this
virtual router.
One instance of each routing protocol is spawned for this virtual router during the ExtremeWare
XOS system boot-up, and these routing instances cannot be deleted.
User Virtual Routers
User virtual routers are the virtual routers created by users in addition to the system virtual routers.
The ability to create user virtual routers was first introduced in ExtremeWare XOS 11.0.
When a new user virtual router is created, by default, no ports are assigned, no VLAN interface is
created, and no support for any routing protocols is added.
Using Virtual Routers
To use the user virtual router functionality in ExtremeWare XOS, you will need to do the following
things:
• Create the virtual router
• Add ports to the virtual router
• Add any required routing protocols to the virtual router
• Configure the routing protocols and VLANs
The following sections describe how to do these tasks.