206 | GARP VLAN Registration Protocol (GVRP)
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• Dynamic VLANs are aged out after the LeaveAll timer expires three times without receipt of a Join
message. Use the
show gvrp statistics {interface interface | summary} command to display status.
• On the MXL Switch, per-VLAN spanning tree+ (PVST+) and GVRP cannot be enabled at the same
time (Figure 11-1). If spanning tree and GVRP are both required, implement either rapid spanning tree
protocol (RSTP), spanning tree protocol (STP), or multiple spanning tree protocol (MSTP). The MXL
10/40GbE Switch IO Module system does support enabling GVRP and MSTP at the same time.
Figure 11-1. GVRP Compatibility Error Message
Configuring GVRP
Globally, enable GVRP on each switch to facilitate GVRP communications. Then, GVRP configuration is
per interface on a switch-by-switch basis. Enable GVRP on each port that connects to a switch where you
want GVRP information exchanged. In Figure 11-2, that kind of port is referred to as a “VLAN trunk
port,” but it is not necessary to specifically identify to FTOS that the port is a trunk port.
FTOS(conf)#protocol spanning-tree pvst
FTOS(conf-pvst)#no disable
% Error: GVRP running. Cannot enable PVST.
FTOS(conf)#protocol gvrp
FTOS(conf-gvrp)#no disable
% Error: PVST running. Cannot enable GVRP.
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