Master Node Configuration 909■ For 3Com Switches 7754, 7757, and 7758, BootROM version 527 must beused.■ The CPLD version of the I/O Modules is not lower than 005.Ports that support RRPP are:■ The four Gigabit SFP ports on the 96Gbps Switch Fabric.■ Gigabit SFP ports/10 Gigabit ports on LS81T12PE, LS81P12TE, LS81GP8UB,LS81TGX2, LS81TGX4, LS81T32P, LS81T16P, and LS81GP48 I/O Modules.n ■ For information about the chassis, Fabric, and I/O Module of 3Com Switches7754, 7757, and 7758 , refer to 3Com Switch 7750 Family Installation Guide.As for the above-mentioned ports, to make RRPP-related configuration to takeeffect, you need also to make sure that:■ The ports are Trunk ports and permit packets of data VLANs.■ The ports cannot be aggregation ports.■ MSTP, QinQ, 802.1x or Voice VLAN is not enabled on the ports.Master NodeConfigurationConfigurationPrerequisitesThe switch ports connecting the Ethernet rings have been configured as trunkports. All ports allow data VLAN packets to pass. And STP has been disenabled onall the ports connecting the Ethernet rings.Master NodeConfiguration TasksThe following table describes the master node configuration tasks.Table 706 Configure the master nodeOperation Command DescriptionEnter system view system-view -Create an RRPP domain,and enter RRPP domainviewrrpp domain domain-id Required.The command promptof RRPP domain viewdepends on thedomain-id you input.Specify a control VLAN forthe RRPP domaincontrol-vlan vlan-id RequiredSpecify the current switch asthe primary node of a ring,and specify the primary portand the secondary port ofthe nodering ring-id node-mode master[ primary-port pri-port ] ]secondary-port sec-port ] levellevel-valueRequired.Level 0 identifies theprimary ring and level 1identifies a subring.Configure RRPP domaintimerstimer hello-timer hello-valuefail-timer fail-valueOptional.By default, the Hellotimer is set to 1 second,and the Fail timer to 3seconds.Enable an RRPP ring ring ring-id enable Required