A message sending control method and device

Abstract

The present application discloses a message sending control method, which includes the following steps: the edge access device of the core network receives the message sent by the access network subtree, and determines the downlink port for receiving the message, and the access device stored in it. The ID of the access network subtree of the downlink port; the access device at the edge of the core network judges the ID of the access network subtree stored in the downlink port of the adjacent device that accesses the corresponding downlink port of the adjacent device The same ID as the downlink port on which the edge access device of the core network receives the message, the edge access device of the core network sends the message with the ID added to the adjacent device, so that the adjacent device according to the ID to send the message to the downlink port of the adjacent device with the same ID, this application can avoid sending the message of the access network subtree to the core network, and at the same time avoid sending the message to other access in the network subtree.

Description

technical field [0001] The present application relates to the field of network technologies, and in particular to a message sending control method and device. Background technique [0002] In a Layer 2 network with redundant backup links, it is necessary to rely on topology control protocols to block redundant links to eliminate data forwarding loops in the network, and when the current forwarding link fails, the blocked backup link Switch to the active link to take over the forwarding of data traffic. The most typical link layer topology protocol is the STP (Spanning Tree Protocol, Spanning Tree Protocol) protocol family, including the STP (Spanning Tree Protocol, Spanning Tree Protocol) to RSTP (Rapid Spanning Tree Protocol, Rapid Spanning Tree Protocol) defined in the 802.1W standard, to MSTP (Multiple Spanning Tree Protocol, Multiple Spanning Tree Protocol) defined in the later 802.1S standard. [0003] The STP protocol calculates a tree-like network topology without d...

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Problems solved by technology

[0011] In solution A of the prior art, when topology changes or flapping occurs, the TC protection mechanism can only reduce the number of TC packets processed in the entire network and reduce the number of forwarding addresses, but cannot limit the sending range of TC packets, that is, the TC packet However, in the prior art scheme B, only the transmission of TC messages in the downstream access network to the core network is restricted, and it is only applicable to the case where the downstream network has only one uplink accessing the core network

When there is more than one uplink accessing the core network in the downstream network, such as figure 2 As shown, when D4 performs uplink transmission, there are two uplinks connected to D1 and D2 respectively. When the uplink of D4 is switched, TC packets will be sent. Since the link between D4 and D2 is blocked, according to the protocol D1 needs to send the TC message to D2, but at this time, the TC message is restricted by D1, so it cannot be forwarded to D2. Therefore, this forwarding mechanism will conflict with the existing protocol, which will cause the downlink traffic of D2 to interrupt

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