Concept ExplanationVLAN, and Master and Transit node information must be configured for the ring tobe up.• Ring-Up — Ring is up and operational.• Ring-Down — Ring is broken or not set up.Ring Health-CheckFrame (RHF)The Master node generates two types of RHFs. RHFs never loop the ring becausethey terminate at the Master node’s secondary port.• Hello RHF (HRHF) — These frames are processed only on the Master node’sSecondary port. The Transit nodes pass the HRHF through without processingit. An HRHF is sent at every Hello interval.• Topology Change RHF (TCRHF) — These frames contains ring status, keepalive,and the control and member VLAN hash. The TCRHF is processed at each nodeof the ring. TCRHFs are sent out the Master Node’s Primary and Secondaryinterface when the ring is declared in a Failed state with the same sequencenumber, on any topology change to ensure that all Transit nodes receive it.There is no periodic transmission of TCRHFs. The TCRHFs are sent on triggeredevents of ring failure or ring restoration only.Implementing FRRP• FRRP is media and speed independent.• FRRP is a Dell proprietary protocol that does not interoperate with any other vendor.• You must disable the spanning tree protocol (STP) on both the Primary and Secondary interfacesbefore you can enable FRRP.• All ring ports must be Layer 2 ports. This is required for both Master and Transit nodes.• A VLAN configured as a control VLAN for a ring cannot be configured as a control or member VLANfor any other ring.• The control VLAN is not used to carry any data traffic; it carries only RHFs.• The control VLAN cannot have members that are not ring ports.• If multiple rings share one or more member VLANs, they cannot share any links between them.• Member VLANs across multiple rings are not supported in Master nodes.• Each ring has only one Master node; all others are transit nodes.FRRP ConfigurationThese are the tasks to configure FRRP.• Creating the FRRP Group• Configuring the Control VLAN– Configure Primary and Secondary ports• Configuring and Adding the Member VLANs– Configure Primary and Secondary portsOther FRRP related commands are:342 Force10 Resilient Ring Protocol (FRRP)
