User guide

September 2009
OmniSwitch 6400/6850/6855/9000/9000E------ Release 6.4.2.R01 Page 17 of 79
VRF - VRRP
Enhances VRRP making it VRF aware. Allows for the configuration of independent VRRP instances
in multiple VRFs.
o The existing VRRP commands and syntaxes (including show commands and outputs) are now
accessible in a “VRF” context.
o VRRP instances can be configured independently of one another on as many VRFs as the
underlying platform supports.
o Each VRRP/VRF instance receives, sends, and processes VRRP packets independently of VRRP
instances running in other VRFs.
VRF – UDP/DHCP Relay
VRF support for UDP/DHCP Relay allows for the configuration and management of relay agents and
servers within the context of a VRF instance. However, the level of VRF support and functionality for
individual UDP/DHCP Relay commands falls into one of the following three categories:
• VRF-Aware commands. These commands are allowed in any of the VRF instances configured
in the switch. The settings in one VRF are independent of the settings in another VRF.
Command parameters are visible and configurable within the context of any VRF.
• Global commands. These commands are supported only in the default VRF, but are visible and
applied to all VRF instances configured in the switch. This command behavior is similar to
how command parameters are applied in the per-VLAN DHCP Relay mode. For example, the
maximum hops value configured in the default VRF is applied to all DHCP Relay agents
across all VRF instances. This value is not configurable in any other VRF instance.
• Default VRF commands. These commands are supported only in the default VRF and are not
applied to any other VRF instance configured in the switch. For example, per-VLAN mode,
DHCP Snooping, and boot-up commands fall into this category.
Refer to the “Configuring Multiple VRF” chapter in the OmniSwitch AOS Release 6 Configuration
Guide for a list of UDP/DHCP Relay VRF related commands.