Default Dvmrp Timer Values; Loopback Interface - ZyXEL Communications XS3800-28 User Manual

following screen.
Figure 395 DVMRP: Duplicate VID Error Message

66.4 Default DVMRP Timer Values

The following are some default DVMRP timer values.
Table 260 DVMRP: Default Timer Values
DVMRP FIELD
Probe interval
Report interval
Route expiration time
Prune lifetime
Prune retransmission time
Graft retransmission time

66.5 Loopback Interface

The loopback interface is a virtual interface which can be assigned an IP address and used by routing
protocols. The loopback interface does not need to be connected to any devices and will always be
available if the Switch is functioning normally and connected to a network. You can enable multiple
loopback interfaces on the Switch, and each loopback interface must be uniquely identified.
The Switch can use a loopback interface address as the source address of all packets that originate
from the Switch. Filters can then be applied to the loopback address to protect the system.
Note: You have to first create a loopback interface and specify an interface ID in the SYSTEM
> Interface Setup screen.
Click NETWORKING > Loopback Interface > IPv4 Loopback Interface to display the following screen.
Chapter 66 IGMP
DEFAULT VALUE
10 sec
35 sec
140 sec
Variable (less than 2 hours)
3 sec with exponential back off
5 sec with exponential back off
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