June 2023

MTU Size

Network Presentation STP There are three types of Spanning Tree Protocol. They are Per VLAN Spanning Tree Protocol, Rapid Spanning Tree Protocol and Multiple Spanning Tree Protocol. —STP TypesPer VLAN Spanning Tree Protocol is the original STP that detects and prevent loops. Rapid Spanning Tree Protocol improves on the original protocol by introducing faster convergence …

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PIM 為建立Multicast Routing Table, 利用RPF checking技術, 在Routing Table(其實是rpf table)查找Source Address是否從best path 來 R1# show ip rpf 192.168.15.5 //查best pathRPF interface: Eth0/2 1. PIM-DM基本玩法 Source 強推Multicast Packet 到所有Host, RPF checking, 查Packet source IP 是經Best Path(如有兩條, 揀next hop大IP)而來, 才繼續強推, 繼而產生SPT(Shortest Path Tree) 如Best Path interface沒有啟動DM, 則會斷路, 可用Multicast Static Route 改路 R2(config)#ip mroute 192.168.15.5 255.255.255.255 192.168.24.4 如有Router認為自己不用Multicast, 可對上游Prune …

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