Concept Guide

Based on the conguration in the following example, the interface is not removed from VLAN 34 or VLAN 35 despite receiving a GVRP
Leave message. Additionally, the interface is not dynamically added to VLAN 45 or VLAN 46, even if a GVRP Join message is received.
Example of the gvrp registration Command
DellEMC(conf-if-te-1/21)#gvrp registration fixed 34,35
DellEMC(conf-if-te-1/21)#gvrp registration forbidden 45,46
DellEMC(conf-if-te-1/21)#show conf
!
interface TenGigabitEthernet 1/21
no ip address
switchport
gvrp enable
gvrp registration fixed 34-35
gvrp registration forbidden 45-46
no shutdown
DellEMC(conf-if-te-1/21)#
Congure a GARP Timer
Set GARP timers to the same values on all devices that are exchanging information using GVRP.
There are three GARP timer settings.
• Join — A GARP device reliably transmits Join messages to other devices by sending each Join message two times. To dene the
interval between the two sending operations of each Join message, use this parameter. The Dell EMC Networking OS default is 200ms.
• Leave — When a GARP device expects to de-register a piece of attribute information, it sends out a Leave message and starts this
timer. If a Join message does not arrive before the timer expires, the information is de-registered. The Leave timer must be greater than
or equal to 3x the Join timer. The Dell EMC Networking OS default is 600ms.
• LeaveAll — After startup, a GARP device globally starts a LeaveAll timer. After expiration of this interval, it sends out a LeaveAll
message so that other GARP devices can re-register all relevant attribute information. The device then restarts the LeaveAll timer to
begin a new cycle. The LeaveAll timer must be greater than or equal to 5x of the Leave timer. The Dell EMC Networking OS default is
10000ms.
Example of the garp timer Command
DellEMC(conf)#garp timer leav 1000
DellEMC(conf)#garp timers leave-all 5000
DellEMC(conf)#garp timer join 300
Verification:
DellEMC(conf)#do show garp timer
GARP Timers Value (milliseconds)
----------------------------------------
Join Timer 300
Leave Timer 1000
LeaveAll Timer 5000
DellEMC(conf)#
Dell EMC Networking OS displays this message if an attempt is made to congure an invalid GARP timer: DellEMC(conf)#garp
timers join 300 % Error: Leave timer should be >= 3*Join timer
.
RPM Redundancy
The current version of Dell EMC Networking OS supports 1+1 hitless route processor module (RPM) redundancy.
The primary RPM performs all routing, switching, and control operations while the standby RPM monitors the primary RPM. In the event
that the primary RPM fails, the standby RPM can assume control of the system without requiring a chassis reboot.
This section contains the following sub-sections:
• Automatic and Manual RPM Failover
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GARP VLAN Registration Protocol (GVRP)