Administrator Guide

multiple member VLANS are configured (for example, M1 to M10) that carry the data traffic across the FRRP rings. The secondary port
P2 is tagged to the control VLAN (V1). VLTi is implicitly tagged to the member VLANs when these VLANs are configured in the VLT peer.
As a result of the VLT Node2 configuration on R2, the secondary interface P2 is blocked for the member VLANs (M11 to Mn).
Following figure illustrated the FRRP Ring R1 topology:
Figure 34. FRRP Ring using VLTi links
Important Points to Remember
• VLTi can be configured only as the primary interface for the primary interface of any FRRP ring.
• Only RSTP and PVST are supported in the VLT environment. Enabling either RSTP or PVST effects FRRP functionality even though
these features are disabled on FRRP enabled interfaces.
• Dell EMC Networking OS does not support coexistence of xSTP and FRRP configurations. Meaning, if there is any active FRRP ring in
the system, then you cannot enable xSTP in the system globally or at the interface level. Similarly, if xSTP is enabled, then you cannot
configure FRRP in the system.
• You cannot configure VLT LAG interfaces as FRRP ring interfaces.
• When ICL is configured as an FRRP ring interface, you cannot remove ICL and VLT domain configurations.
• When FRRP is enabled on a VLT domain, you cannot enable any flavor of the spanning tree protocol (STP) concurrently on the nodes
corresponding to that VLT domain. Meaning, FRRP and xSTP cannot coexist in a VLT environment.
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Force10 Resilient Ring Protocol (FRRP)