ZyXEL Communications 4528F User Manual

 Chapter 39 DVMRP

XGS-4526/4528F/4728F User’s Guide

The following table describes the labels in this screen. 

You must have IGMP enabled when you enable DVMRP; otherwise you see the 
screen as in the next figure.

Figure 175   DVMRP: IGMP Not Set Error 

When you disable IGMP, but DVMRP is still active you also see another warning 
screen.

Figure 176   DVMRP: Unable to Disable IGMP Error 

Table 124   IP Application > DVMRP 

Active

Select Active to enable DVMRP on the Switch. You should do this if you want 
the Switch to act as a multicast router. 

Threshol
d

Threshold is the maximum time to live (TTL) value. TTL is used to limit the 
scope of multicasting. You should reduce this value if you do not wish to flood 
Layer-3 devices many hops away with multicast traffic. This applies only to 
multicast traffic this Switch sends out.

Index

Index is the DVMRP configuration for the IP routing domain defined under 
Network. The maximum number of DVMRP configurations allowed is the 
maximum number of IP routing domains allowed on the Switch. See 

 for more information on IP routing domains.

Network

This is the IP routing domain IP address and subnet mask you set up in IP 
Setup.

VID

DVMRP cannot be enabled on the same VLAN group across different IP routing 
domains, that is, you cannot have duplicate VIDs for different DVMRP 
configurations (see 

Active

Select Active to enable DVMRP on this IP routing domain.

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 begin configuring this screen afresh.