Nortel 15000 Terminology page 144

virtual router redundancy protocol (VRRP)
A protocol that specifies an election protocol that dynamically assigns
responsibility for a virtual router to one of the VRRP routers on a LAN.
virtual router redundancy protocol backup (VRRP backup)
The set of VRRP routers available to assume forwarding responsibilities for a
virtual router should the current master router fail.
virtual router redundancy protocol MAC address (VRRP MAC address)
A unicast MAC address associated with each VRRP virtual router that is used
as a source MAC address for the VRRP advertisements. The VRRP master
uses this address instead of its physical MAC address in all communications,
for example: ARP response.
virtual router redundancy protocol master (VRRP master)
The VRRP router that assumes the responsibility of forwarding packets sent
to the IP address(es) associated with the virtual route and answers ARP
requests for these IP addresses.
virtual router redundancy protocol router (VRRP router)
A virtual router that runs the virtual router redundancy protocol. This virtual
router may have more than one instance of VRRP provisioned.
virtual source/virtual destination (VS/VD)
The endpoints of the shortened loops. ABR relies on circuit loops with source
and destination nodes to originate and turnaround resource management
cells. Service providers can subdivide an ABR circuit into short loops as a way
to reduce loop length or to avoid non-ABR nodes. The endpoints of the
shortened loops are known as virtual sources and destinations.
virtual UNI
See virtual interface (page
VL
See virtual link (VL) (page
VLAN
See virtual LAN (VLAN) (page
VLAN-tagged
A tagged frame whose IEEE 802.1Q-tag carries both VLAN identification and
priority information.
Copyright © 2006, Nortel
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List of terms
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142).
Nortel Multiservice Switch 7400/15000/20000
Terminology
NN10600-005 7.2S1 Standard
PCR7.2 and up March 2006
Nortel Confidential