D-Link DGS-3630-52PC Web UI Reference Guide 2 - Page 320

DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide Parameter Mode Designated Router Priority Hello Interval Join Prune Interval BSR Domain Border PIM Passive Mode Description Select the IPv6 PIM mode used in this interface here. Options to choose from are None and Sparse Mode. PIM for IPv6 will be disabled in this interface when the None option was selected. Enter the DR priority value here. The range is from 0 to 4294967295. A larger value means a higher priority. Select the Default option to use the default value, which is 1. This feature only takes effective when the VLAN interface is PIM-SM mode enabled. When a DR is a candidate for election, the following conditions apply: • The router with the highest priority value configured on an interface will be elected as the DR. If multiple routers have the same highest priority, then the router with the highest IPv6 address configured on the interface will be elected as the DR. • If a router does not advertise a priority value in its hello messages, the router is regarded as having the highest priority and will be elected as the DR. If there are multiple routers do not include the DR priority option in their hello messages, then the router with the highest IPv6 address will be elected as the DR. Enter hello message interval value here. The range is from 1 to 18000 seconds. A PIM router learns PIM neighbors via the hello message. Routers configured for IP multicast send PIM hello messages to detect PIM routers. For SM, hello messages are also used to determine which router will be elected as the designated router for each LAN segment. Select the Default option to use the default value, which is 30 seconds. Enter the Join/Prune message interval value here. The range is from 1 to 18000 seconds. When configuring the Join/Prune interval, the user needs to consider the factors, such as configured bandwidth and expected average number of multicast route entries for the attached network or link (for example, the period would be longer for lower-speed links, or for routers in the center of the network that expect to have a larger number of entries). For SM-mode, the router will periodically send the join message based on this interval. The hold-time in a Join/Prune message is 3.5 times the join-pruneinterval. The receiving router will start a timer based on this hold-time, and prune the interface if no join message is received on this interface. Select the Default option to use the default value, which is 60 seconds. Select to enable or disable the BSR domain border feature here. When an interface is configured as a border, it will prevent bootstrap router (BSR) messages from being sent or received through it. Select to enable or disable the PIM passive mode for this interface here. This feature only takes effect when the interface is IPv6 PIM enabled. When the passive mode is enabled, the interface will neither send PIM messages out nor accept PIM messages from this interface. The router will act as it is the only PIM router on the network. Use this feature only when there is only one PIM router on the LAN. Click the Apply button to accept the changes made. Click the Back button to return to the previous window. PIM for IPv6 BSR Candidate Settings This window is used to display and configure the IPv6 PIM BSR candidate settings. This feature only affects PIM-SM operation. This will cause the router to send bootstrap messages to all its PIM neighbors, with the address of the designated interface as the BSR address. A PIM-SM domain must contain a unique BSR (Bootstrap Router) which is responsible for collect and advertise the RP information. To view the following window, click L3 Features > IP Multicast Routing Protocol > PIM > PIM for IPv6 > PIM for IPv6 BSR Candidate Settings, as shown below: 308