Administrator Guide

fa:11:22:33:44:55 .
Jun 23 17:53:17.509 UTC %STKUNIT1-M:CP %ARPMGR-6-MAC_CHANGE: IP-4-ADDRMOVE: IP address
10.20.30.40 is moved from MAC address fa:11:22:33:44:55 to MAC address
fa:aa:bb:cc:dd:ee .
Jun 23 17:53:17.399 UTC %STKUNIT1-M:CP %ARPMGR-6-MAC_CHANGE: IP-4-ADDRMOVE: IP address
10.20.30.40 is moved from MAC address fa:aa:bb:cc:dd:ee to MAC address
fa:11:22:33:44:55 .
Follow these steps to configure or unconfigure the Additional ARP refresh on VLTi:
Disabling Additional ARP refresh on VLTi
1. Log in to the CONFIGURATION mode.
2. Enter the VLT DOMAIN mode using the vlt domain command, and then the VLT domain number. The prompt changes to
include conf-vlt-domain.
DellEMC(conf)#vlt domain 1
DellEMC(conf-vlt-domain)#
3. Use the no arp additional-refresh command to disable Additional ARP refresh on VLTi.
DellEMC(conf-vlt-domain)#no arp additional-refresh
Re-Enabling Additional ARP refresh on VLTi
1. Log in to the CONFIGURATION mode.
2. Enter the VLT DOMAIN mode using the vlt domain command, and then the VLT domain number. The prompt changes to
include conf-vlt-domain.
DellEMC(conf)#vlt domain 1
DellEMC(conf-vlt-domain)#
3. Use the arp additional-refresh command to reenable Additional ARP refresh on VLTi.
DellEMC(conf-vlt-domain)#arp additional-refresh
PIM-Sparse Mode Support on VLT
The designated router functionality of the PIM Sparse-Mode multicast protocol is supported on VLT peer switches for multicast
sources and receivers that are connected to VLT ports.
VLT peer switches can act as a last-hop router for IGMP receivers and as a first-hop router for multicast sources.
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Virtual Link Trunking (VLT)