A link protection method and device in the soft restart upgrade process of issu

Abstract

The embodiment of the invention discloses a link protection method and apparatus in a soft restart upgrade process of ISSU (in-service software upgrade). The method comprises the following steps that: opposite terminal equipment receives a detection message, wherein the detection message is transmitted by local terminal equipment via a member port for transmitting a protocol message; the opposite terminal equipment transmits an inform message to the opposite terminal equipment if the receiving link DOWN of the member port of the detection message is confirmed; and the local terminal equipment re-selects the member port for transmitting the protocol message from other UP member ports after receiving the inform message. According to the embodiment of the invention, the soft restart upgrade reliability is effectively improved, and the uninterrupted upgrade of the service is realized.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a link protection method and equipment in the soft restart upgrade process of ISSU (In-Service Software Upgrade, non-interrupted service upgrade). Background technique [0002] Link aggregation can increase link bandwidth by bundling multiple Ethernet physical links together into one logical link, and these bundled physical links can effectively improve link reliability. Such as figure 1 As shown in the link aggregation schematic diagram, DeviceA (device A) is connected to DeviceB through three physical links, and these three physical links are bundled together to form a logical link Linkaggregation1 (link aggregation 1). The bandwidth of the link is equal to the sum of the bandwidths of the three physical links, thereby achieving the purpose of increasing the link bandwidth; and the three physical links back up each other, effectively improving the link reliabil...

AI Technical Summary

Problems solved by technology

[0008] In the above implementation method, only one member port in the aggregation port is selected to send the protocol packet. Assuming that the member port Eth1 / 1 is selected, the link where Eth1 / 1 is located will be down, and DeviceA cannot be updated in time during the soft restart upgrade process. Sensing that the link where Eth1 / 1 is located is down, it does not switch to other member ports immediately, and then causes DeviceB to start topology flapping because it cannot receive the protocol packets from DeviceA, further causing data loops or data forwarding interruptions in the network Wait

Images