Network number (per frame type), Rip update timer, Sap update timer – Compatible Systems 5.4 User Manual

Page 76: Block ipx type 20 output packets

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Chapter 3 - IPX Routing & Bridging

number if it exists. If it doesn’t discover a number in use, the device will
auto-generate a valid number using its routing tables.

Off means the device will neither listen for, nor send packets with this
frame type on this interface.

>

Network Number (per Frame Type)

This is an eight-digit hexadecimal number that uniquely identifies the
network segment(s) connected to this interface. Values range from 1 to
FFFFFFFE.

v Note: Accidental selection of an IPX network number which is already in
use on another network segment may cause hard-to-diagnose problems. You
should carefully track which IPX network numbers are in use, and where they
are used.

RIP Update Timer

This value dictates how often the device sends out IPX \RIP (Routing Infor-
mation Protocol) packets on the network segment(s) attached to this interface.
The RIP packets sent out on this interface contain information about networks
for which this device is responsible. RIP packets received tell the device
about other networks and routers. The default is 60 seconds.

SAP Update Timer

This value dictates how often the device sends out IPX SAP (Service Access
Protocol) packets on the network segment(s) attached to this interface. The
SAP packets sent out on this interface contain information about services
(such as servers, printers, etc.) for which this device is responsible. SAP
packets received tell this device about services available on other network
segments. The default is 60 seconds.

Block IPX Type 20 Output Packets

In order for some protocols, notably NetBIOS, to function in the NetWare
environment, routers must propagate a certain type of broadcast packet
throughout an IPX internetwork. IPX packet type 20 is designated to perform
broadcast propagation for these protocols.

When an IPX device receives a type 20 packet, it rebroadcasts it out all inter-
faces, except the one on which it was received. The IPX network number of
the originating interface is included in the rebroadcast packets.

This checkbox allows you to control the rebroadcasting of IPX type 20
packets on this interface. This is useful for on-demand WAN links where the
link may be brought up as a result of propagating this type of packet.

If checked, then type 20 packets will not be propagated on this interface.
The default is unchecked.

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