ZyXEL Communications GS3700 Series Podręcznik Użytkownika Pobierz pdf (Strona 316)

Chapter 38 VRRP

GS3700/XGS3700 Series User’s Guide

316

38.3.2 VRRP Parameters

This section describes the VRRP parameters.

38.3.2.1 Advertisement Interval

The master router sends out Hello messages to let the other backup routers know that it is still up

and running. The time interval between sending the Hello messages is the advertisement interval.

By default, a Hello message is sent out every second.

If the backup routers do not receive a Hello message from the master router after this interval

expires, it is assumed that the master router is down. Then the backup router with the highest

priority becomes the master router.

Note: All routers participating in the virtual router must use the same advertisement

interval.

38.3.2.2 Priority

Configure the priority level (1 to 254) to set which backup router to take over in case the master

router goes down. The backup router with the highest priority will take over. The priority of the

VRRP router that owns the IP address(es) associated with the virtual router is 255.

38.3.2.3 Preempt Mode

If the master router is unavailable, a backup router assumes the role of the master router. However,

when another backup router with a higher priority joins the network, it will preempt the lower

priority backup router that is the master. Disable preempt mode to prevent this from happening.

By default, a layer 3 device with the same IP address as the virtual router will become the master

router regardless of the preempt mode.

Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these

changes if it is turned off or loses power, so use the Save link on the top navigation panel to

save your changes to the non-volatile memory when you are done configuring.

Cancel Click Cancel to discard all changes made in this table.

Table 161 IP Application > VRRP Configuration: IP Interface (continued)

LABEL DESCRIPTION

1 2 ... 311 312 313 314 315 316 317 318 319 320 321 ... 415 416

Brak uwag

ZyXEL Communications GS3700 Series Podręcznik Użytkownika Strona 316