Accept mode allows a backup VRRP device to respond to ping, traceroute, and Telnet packets if the backup device becomes the master VRRP device.
For each VRRP virtual routing instance, there is one master device and all other devices are backups. Accept mode allows some network management functionality for backup VRRP devices, providing the ability to respond to ping, traceroute, and Telnet packets. Troubleshooting network connections to the VRRP nonowner master device is difficult unless accept mode is enabled. By default, accept mode is enabled and non-owner VRRP devices will accept packets destined for the IPv4 or IPv6 VRID addresses if they become master.
Note
The accept mode functionality enables a VRRP nonowner master device to respond to ping, Telnet, and traceroute packets, but the device will not respond to SSH packets.