Deployment Guide
Protocol Ethernet Address
OSPF
01:00:5e:00:00:05
01:00:5e:00:00:06
RIP 01:00:5e:00:00:09
NTP 01:00:5e:00:01:01
VRRP 01:00:5e:00:00:12
PIM-SM 01:00:5e:00:00:0d
• The Dell Networking OS implementation of MTRACE is in accordance with IETF draft draft-fenner-traceroute-ipm.
• Multicast is not supported on secondary IP addresses.
• Egress L3 ACL is not applied to multicast data trac if you enable multicast routing.
First Packet Forwarding for Lossless Multicast
Beginning with the Dell Networking OS version version 8.3.1.0, all initial multicast packets are forwarded to receivers to achieve lossless
multicast.
In previous versions, when the Dell Networking system is an RP, all initial packets are dropped until PIM creates an (S,G) entry. When the
system is an RP and a Source DR, these initial packet drops represent a loss of native data, and when the system is an RP only, the initial
packets drops represent a loss of register packets.
Both scenarios might be unacceptable depending on the multicast application. Beginning with the Dell Networking OS versions noted here,
when the system is the RP, and has receivers for a group G, it forwards all initial multicast packets for the group based on the (*,G) entry
rather than discarding them until the (S,G) entry is created, making Dell Networking systems suitable for applications sensitive to multicast
packet loss.
NOTE
: When a source begins sending trac, the Source DR forwards the initial packets to the RP as encapsulated registered
packets. These packets are forwarded via the soft path at a maximum rate of 70 packets/second. Incoming packets beyond this
rate are dropped.
Multicast Policies
The Dell Networking OS oers parallel multicast features for IPv4.
IPv4 Multicast Policies
The following sections describe IPv4 multicast policies.
• Limiting the Number of Multicast Routes
• Preventing a Host from Joining a Group
• Rate Limiting IGMP Join Requests
• Preventing a PIM Router from Forming an Adjacency
• Preventing a Source from Registering with the RP
• Preventing a PIM Router from Processing a Join
Multicast Features
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