H3C S5820X SERIES High Availability Configuration Manual

Also see for s5800 series: Installation manual Instruction manual Command reference Quick start Troubleshooting guide

Contents

H3C S5820X SERIES High Availability Configuration Manual Manual pdf 70 page image

58As shown in Figure 13, Device B and Device C lie on Ring 1 and Ring 2. Device B’s Port 1 and Port 2 andDevice C’s Port 1 and Port 2 access the primary ring, so they are common ports. Device B’s Port 3 andDevice C’s Port 3 access only the subring, so they are edge ports.RRPP ring groupTo reduce Edge-Hello traffic, you can configure a group of subrings on the edge node or assistant-edgenode. (For more information about Edge-Hello packets, see “RRPPDUs.”) Such rings have the followingrequirements:• You must configure a device as the edge node of these subrings.• You must configure a different device as the assistant-edge node of these subrings.• The subrings of the edge node and assistant-edge node must connect to the same subring packettunnels (SRPTs) in the major ring, so that Edge-Hello packets of the edge node of these subringstravel to the assistant-edge node of these subrings over the same link.An RRPP ring group configured on the edge node is an edge node RRPP ring group. An RRPP ring groupconfigured on an assistant-edge node is an assistant-edge node RRPP ring group. Up to one subring inan edge node RRPP ring group is allowed to send Edge-Hello packets.RRPPDUsTable 17 RRPPDU types and their functionsType DescriptionHello The master node initiates Hello packets to detect the integrity of a ring in anetwork.Fast-Hello The master node initiates Fast-Hello packets to fast detect the integrity of a ring ina network.Link-DownThe transit node, the edge node or the assistant-edge node initiates Link-Downpackets to notify the master node of the disappearance of a ring in case of a linkfailure.Common-Flush-FDBThe master node initiates Common-Flush-FDB (FDB stands for ForwardingDatabase) packets to instruct the transit nodes to update their own MAC entriesand ARP/ND entries when an RRPP ring transits to Disconnect state.Complete-Flush-FDBThe master node initiates Complete-Flush-FDB packets to instruct the transit nodesto update their own MAC entries and ARP/ND entries, and release blockedports from being blocked temporarily when an RRPP ring transits to Health state.Edge-Hello The edge node initiates Edge-Hello packets to examine the SRPTs between theedge node and the assistant-edge node.Fast-Edge-Hello The edge node initiates Fast-Edge-Hello packets to fast examine the SRPTsbetween it and the assistant-edge node.Major-FaultThe assistant-edge node initiates Major-Fault packets to notify the edge node ofSRPT failure when an SRPT between edge node and assistant-edge node is torndown.NOTE:RRPPDUs of subrings are transmitted as data packets in the primary ring, and RRPPDUs of the primary ringcan only be transmitted within the primary ring.