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While uRPF is used as an ingress filtering mechanism, it is affected by reverse-path forwarding. Reverse path filters are typically used to disable asymmetric routing where an IP application has a different incoming and outgoing routing path. Its intent is to prevent a packet entering one interface from leaving via the other interfaces. Reverse ...
Topology broadcast based on reverse-path forwarding (TBRPF) is a link-state routing protocol for wireless mesh networks. The obvious design for a wireless link-state protocol (such as the optimized link-state routing protocol) transmits large amounts of routing data, and this limits the utility of a link-state protocol when the network is made of moving nodes.
Forwarding to another address has always worked by rewriting the address in the forward path also known as RCPT TO, if and only if the forwarding MTA accepted the responsibility for both forwarding the mail and returning potential bounce messages to the sender. RFC 821 and all later SMTP specifications offer two result codes for this situation:
A label-switched path (LSP) is a path through an MPLS network set up by the NMS or by a signaling protocol such as LDP, RSVP-TE, BGP (or the now deprecated CR-LDP). The path is set up based on criteria in the FEC. The path begins at an LER, which makes a decision on which label to prefix to a packet based on the appropriate FEC.
PIM uses the unicast routing table for reverse-path forwarding. [1]: 56–57 There are four variants of PIM: PIM Sparse Mode (PIM-SM) explicitly builds unidirectional shared trees rooted at a rendezvous point (RP) per group, and optionally creates shortest-path trees per source. PIM-SM generally scales fairly well for wide-area usage.
Path messages (path) The path message is sent from the sender host along the data path and stores the path state in each node along the path. The path state includes the IP address of the previous node, and some data objects: sender template to describe the format of the sender data in the form of a Filterspec [4]
This article lists protocols, categorized by the nearest layer in the Open Systems Interconnection model.This list is not exclusive to only the OSI protocol family.Many of these protocols are originally based on the Internet Protocol Suite (TCP/IP) and other models and they often do not fit neatly into OSI layers.
Therefore, each node on that path will create a forwarding entry toward the MAC address of node five using the first ECMP VID 101. Conversely, 802.1aq specifies a second ECMP tie-breaking algorithm called High PATH ID. This is the path with the maximum node identifier on it and in the example is the 7->2->3->5 path (shown in blue in Figure 2).