PIM是ip routing protocol-independent,独立于路由协议的,但是仍然需要有路由表存在,这是防止环路的要求。 PIM分为sparse mode和dense mode 六、IGMP和CGMP IGMP v1:包含组成员查询包,组成员回复包。3个60秒无回复则取消此成员 IGMP v2:新增leave report,版本2的成员查询消息,可随时脱离多播组 IGMP v3:新增版本3...
This paper focuses on building up some models for its most common types, this is, PIM Dense Mode and PIM Sparse Mode, by using manual algebraic derivations, following the Algebra of Communicating Processes (ACP) axioms. The purpose of such models is to achieve a simplified approach, yet as ...
PIM works in sparse mode (PIM-SM) or dense mode (PIM-DM). PIM-SM is applicable to large-scale networks with sparsely distributed group members, whereas PIM-DM is applicable to small-scale networks with densely distributed group members. ...
PIM consists of two protocols: PIM Dense Mode (PIM-DM) and PIM Sparse Mode (PIM-SM). PIM-DM is most efficient in environments where multicast group members are densely distributed over the internetwork. PIM-SM is most efficient in environments where group members are sparsely distributed. A ...
You can see we have as we mentioned, already joined the multicast group 224.0.1.40, but look at those flags, one of them is D for Dense! But we specified sparse mode! 你可以看到我们已经提到过的,已经加入了组播组224.0.1.40,但是看看这些标志位,其中D代表Dense,但是我们指定的是Sparse模式 ...
Router(config-if)#ip pim sparse-dense-mode 更改IGMP版本: Router(config-if)#ip igmp version{ 3 | 2 | 1 } 定义接口TTL门限: Router(config-if)#ip multicast ttl-thresholdttl 手动指定RP地址: Router(config)#ip pim rp-addressrp-address ...
ip address 192.168.104.61 255.255.255.0ip pim sparse-dense-mode <-- The interface participates in multicast routingip ospf 1 area 0 ! interface Loopback0ip address 198.51.100.1 255.255.255.255<-- The router is the RPip pim sparse-dense-mode <-- The interface participates in multic...
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected, L - Local, P - Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT, M - MSDP created entry, E - V - RD & Vector, v - Vector, p - PIM Joins on route ...
This allow to even further compact the RBS encoding for dense trees, such as in applications like IPTV. Note that this optimization was not included in any of the RBS proposal specifications, but it is included in this RTS specification.This optimization leads to the actual reduction in packet...
If an entry exists in the cache, then that group operates in sparse mode on that interface. If the multicast group does not have a corresponding entry in the mapping cache, then that group operates in dense mode. 1.1.4.4 PIM Source Specific Multicast The Source Specific Multicast feature is...