Design Reference
Table Of Contents
- Contents
- Chapter 1: Introduction
- Chapter 2: New in this release
- Chapter 3: Network design fundamentals
- Chapter 4: Hardware fundamentals and guidelines
- Chapter 5: Optical routing design
- Chapter 6: Platform redundancy
- Chapter 7: Link redundancy
- Chapter 8: Layer 2 loop prevention
- Chapter 9: Spanning tree
- Chapter 10: Layer 3 network design
- Chapter 11: SPBM design guidelines
- Chapter 12: IP multicast network design
- Multicast and VRF-lite
- Multicast and MultiLink Trunking considerations
- Multicast scalability design rules
- IP multicast address range restrictions
- Multicast MAC address mapping considerations
- Dynamic multicast configuration changes
- IGMPv3 backward compatibility
- IGMP Layer 2 Querier
- TTL in IP multicast packets
- Multicast MAC filtering
- Guidelines for multicast access policies
- Multicast for multimedia
- Chapter 13: System and network stability and security
- Chapter 14: QoS design guidelines
- Chapter 15: Layer 1, 2, and 3 design examples
- Chapter 16: Software scaling capabilities
- Chapter 17: Supported standards, RFCs, and MIBs
- Glossary
last member query
interval (LMQI)
The time between when the last IGMP member leaves the group and the
stream stops.
latency The time between when a node sends a message and receipt of the
message by another node; also referred to as propagation delay.
Layer 1 Layer 1 is the Physical Layer of the Open System Interconnection (OSI)
model. Layer 1 interfaces with the MAC sublayer of Layer 2, and
performs character encoding, transmission, reception, and character
decoding.
Layer 2
Layer 2 is the Data Link Layer of the OSI model. Examples of Layer 2
protocols are: Ethernet and Frame Relay.
Layer 2 Virtual
Services Network
Layer 2 Virtual Services Network (L2 VSN) feature provides IP
connectivity over SPBM for VLANs. Backbone Edge Bridges (BEBs)
handle Layer 2 virtualization. At the BEBs you map the end-user VLAN
to a Service Instance Identifier (I-SID). BEBs that have the same I-SID
configured can participate in the same Layer 2 Virtual Services Network
(VSN).
Layer 3
Layer 3 is the Network Layer of the OSI model. An example of a Layer
3 protocol is Internet Protocol (IP).
Layer 3 Virtual
Services Network
The Layer 3 Virtual Services Network (L3 VSN) feature provides IP
connectivity over SPBM for VRFs. Backbone Edge Bridges (BEBs)
handle Layer 3 virtualized. At the BEBs through local provisioning, you
map the end-user IP enabled VLAN or VLANs to a Virtualized Routing
and Forwarding (VRF) instance. Then you map the VRF to a Service
Instance Identifier (I-SID). VRFs that have the same I-SID configured can
participate in the same Layer 3 Virtual Service Network (VSN).
Layer 4
The Transport Layer of the OSI model. An example of a Layer 4 protocol
is Transmission Control Protocol (TCP).
link-state
advertisement
(LSA)
Packets that contain state information about directly connected links
(interfaces) and adjacencies. Each Open Shortest Path First (OSPF)
router generates the packets.
link-state
database (LSDB)
A database built by each OSPF router to store LSA information. The
router uses the LSDB to calculate the shortest path to each destination
in the Autonomous System (AS), with itself at the root of each path.
Link Aggregation
Control Protocol
(LACP)
A protocol that exists between two endpoints to bundle links into an
aggregated link group for bandwidth increase and link redundancy.
Link Aggregation
Control Protocol
Link aggregation control protocol data unit (LACPDU) is used for
exchanging information among LACP-enabled devices.
Link Aggregation Control Protocol Data Units (LACPDU)
Network Design Reference for Avaya VSP 4000 February 2014 159