D-Link DGS-1520 User Manual - Page 300
DVMRP Neighbor Table, PIM, Source Network, Show All
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DGS-1520 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide The fields that can be configured are described below: Parameter Source Network Description Enter the source IPv4 network address and mask length here. Click the Find button to locate a specific entry based on the information entered. Click the Show All button to display all the entries. DVMRP Neighbor Table This window is used to find and display DVMRP neighbor information. To view the following window, click L3 Features > IP Multicast Routing Protocol > DVMRP > DVMRP Neighbor Table, as shown below: Figure 6-87 DVMRP Neighbor Table Window The fields that can be configured are described below: Parameter Interface name Neighbor IP Address Description Enter the VLAN interface name here. Select and enter the IPv4 address of the neighbor here. Click the Find button to locate a specific entry based on the information entered. Click the Show All button to display all the entries. PIM Protocol Independent Multicast (PIM) is a family of multicast routing protocols for Internet Protocol (IP) networks that provide one-to-many and many-to-many distribution of data over a LAN, WAN or the Internet. PIM is protocolindependent as it does not include its own topology discovery mechanism, but uses routing information supplied by other routing protocols, such as RIP or OSPF. The Switch supports four types of PIM, Dense Mode (PIM-DM), Sparse Mode (PIM-SM), PIM Source Specific multicast (PIM-SSM), and Sparse-Dense Mode (PIM-DM-SM). PIM-SM Protocol Independent Multicast - Sparse Mode (PIM-SM) is a multicast routing protocol that can use the underlying unicast routing information base or a separate multicast-capable routing information base. It builds unidirectionalshared trees rooted at a Rendezvous Point (RP) per group, and optionally creates shortest-path trees per source. Unlike most multicast routing protocols, which flood the network with multicast packets, PIM-SM will forward traffic to routers who are explicitly a part of the multicast group through the use of a Rendezvous Point (RP). This RP will take all requests from PIM-SM enabled routers, analyze the information, and then return multicast information it receives from the source to requesting routers within its configured network. Through this method, a distribution tree is created, with the RP as the root. This distribution tree holds all PIM-SM enabled routers within which information collected from these routers is stored by the RP. 290