Distance Vector Multicast Routing Protocol Guidelines; Dvmrp Scalability - Avaya 8800 Planning And Engineering

Example 2
If 1.6 MB of system memory is available for PGM, the number of sessions the switch can create
is (1.6 MB/ 40 236) = 40 sessions. In this case, ensure that the window size of the application is
low (usually below 100). The window size is related to client and server memory and affects
the switch only when retransmission errors occur.
In addition to window size, also limit the total number of PGM sessions to control the amount
of memory that PGM uses. Specifically, ensure that PGM does not consume the memory
required by the other protocols. The default value for the maximum number of sessions is 100.

Distance Vector Multicast Routing Protocol guidelines

Distance Vector Multicast Routing Protocol (DVMRP) is an Interior Gateway Protocol (IGP)
that routes multicast packets through a network. DVMRP is based on RIP, but unlike RIP, it
keeps track of return paths to the source of multicast packets. DVMRP uses the Internet Group
Management Protocol (IGMP) to exchange routing packets.
For more information about DVMRP, see Avaya Ethernet Routing Switch 8800/8600
Configuration — IP Multicast Routing Protocols, NN46205-501.
DVMRP navigation
•

DVMRP scalability

• DVMRP design guidelines
• DVMRP timer tuning
• DVMRP policies
• DVMRP passive interfaces
DVMRP scalability
IP multicast scaling depends on several factors. Some limitations are related to the system
itself (for example, CPU and memory resources); other limitations are related to your network
design.
Scaling information for DVMRP is based on test results for a large network under different
failure conditions. Unit testing of such scaling numbers provides higher numbers, particularly
for the number of IP multicast streams. The numbers specified in this section are recommended
for general network design.
No VLAN IDs restrictions exist as to what can be configured with DVMRP. You can configure
up to 500 VLANs for DVMRP. If you configure more than 300 DVMRP interfaces, you require a
Planning and Engineering — Network Design
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