ZT8101 Intel (CPU), ZT8101 Datasheet - Page 33

• Manufacturer Part Number: ZT8101
• Manufacturer: Intel (CPU)

Specifications of ZT8101

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Layer 3 Multicast Routing Protocols
7.1
7.2
7.2.1
Intel
®
Table 15. Rules for Incoming Packets
NetStructure
The ZT 8101 switch supports both DVMRP and PIM-DM, and both protocols can be enabled at the
same time. However, an IP interface can only be enabled for one of these protocols.
Router Ports
When the switch detects routing control packets (RIP, OSPF, DVMRP, and PIM) or IGMP query
packets on an Ethernet port of a specific VLAN, the switch automatically designates the port as a
dynamic router port. Router ports become default members of the learned multicast groups in the
VLAN.
The switch allows you to configure ports as static router ports. These ports also become default
members of the learned multicast groups in the VLAN.
Multicast Forwarding Rules
The forwarding rules depend upon whether the packets need to be forwarded within a VLAN or
between VLANs. The following sections describe these rules.
Multicast Forwarding within a VLAN
The following two tables describe the forwarding rules for multicast data within a VLAN. The first
table describes the rules for incoming packets, and the second table describes the rules for outgoing
packets.
IP Multicast Data Packet (IGMP and
IGMP Snooping is disabled)
Destination Unknown multicast data
Router Packet (OSPF, etc.)
IGMP Report
IGMP Query
IGMP Leave
IGMP Group Specific Query
Multicast data packet destined for a
learned multicast group
TM
ZT 8101 10/100 Ethernet Switch Technical Product Specification
Incoming Packet Type
VLAN flooding.
Either VLAN flooding, or if the customer requests, dropped.
Router ports only.
Router ports only.
VLAN flooding.
Router ports only.
Either VLAN flooding, or if there are group member ports and/or
router ports, the data is sent to them.
Group member ports and router ports.
Layer 3 Multicast Routing Protocols
Will be sent to
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