Types Of Virtual Routers - Extreme Networks ExtremeWare XOS Guide Manual

Virtual Routers

Types of Virtual Routers

There are two types of virtual routers in an ExtremeWare XOS system:
System virtual routers
●
These are the special virtual routers created by ExtremeWare XOS during system boot up, and they
cannot be deleted or renamed. There are a total of three of these special virtual routers in the
ExtremeWare XOS system.
User virtual routers
●
These are the virtual routers created and named by users.
NOTE
User virtual routers are supported only on the BlackDiamond 10K switch.
System Virtual Routers
The system virtual routers are the three virtual routers created at boot-up time. These system virtual
routers cannot be deleted or renamed. They are named VR-Mgmt, VR-Control, and VR-Default. The
following describes each system virtual router:
VR-Mgmt
●
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.
This virtual router is called VR-0 in ExtremeWare XOS releases prior to 11.0.
VR-Control
●
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.
This virtual router is called VR-1 in ExtremeWare XOS releases prior to 11.0.
VR-Default
●
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.
This virtual router is called VR-2 in ExtremeWare XOS releases prior to 11.0.
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ExtremeWare XOS 11.3 Concepts Guide