Snmp; Vlans; Udp/Dhcp Relay - Alcatel-Lucent OmniSwitch 6850-48 Network Configuration Manual

Configuring Multiple VRF
-> qos policy condition c1 vrf engr_vrf
-> qos policy condition c2 vrf default
-> qos policy condition c1 no vrf
•
VRF policies are configured in the default VRF, similar to how all other QoS policies are configured.
If the VRF name specified does not exist, the policy is not allocated any system resources.
•
Policies that do not specify a VRF name are considered global policies and are applied across all VRF
instances and VLANs.
•
Policies that specify the default VRF apply only to traffic in the default VRF instance.
•
Policies that specify a VRF name apply only to traffic in the VRF instance associated with that name.
•
The switch network group is supported only in VRF policies that specify the default VRF instance. If
this group is specified in a global policy (no VRF specified) then the policy is applied across all VRF
instances.

SNMP

•
SNMPv3 is required to manage VRF instances; SNMPv1 and v2 are not supported.
•
Configuring the management station to use SNMPv3 is required to receive traps from VRF-aware
applications.

VLANs

Configuring an interface for a VLAN also associates that VLAN with the active VRF context. A VLAN,
however, can only belong to one VRF instance at a time. As a result, all interfaces configured for a VLAN
must belong to the same VRF instance. See
for more information.

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.
OmniSwitch AOS Release 6 Network Configuration Guide
"Assigning IP Interfaces to a VRF Instance" on page 25-15
September 2009
VRF Interaction With Other Features
page 25-11