Ipx/Retain; Ipx/Type 20 Packets - ADTRAN Express XL 1200070L1 User Manual

Isdn router/bridge

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Chapter 3: Terminal Menu Operation and Structure

IPX/Retain

Write security: 3; Read security: 5

When this Connection List entry is disconnected and this parameter is set to

Yes, all routes learned from this WAN connection are retained and their rout-

ing interface is set to idle. This permits dial-on-demand to occur using this

profile for any IPX network or service that might have been advertised by the

particular PPP peer. The idle routes can be flushed or "zombied" from the

routing table if a manual hangup is performed when this WAN connection is

not active. See Dial /Hang up. When this Connection List entry is disconnect-

ed and this parameter is set to No (def), IPX routes and services learned from

this session are "zombied" and are not retained.

Write security: 3; Read security: 5

In order for certain protocol implementations, like NetBIOS, to function in the

NetWare environment, routes must allow a broadcast packet to be propagated

throughout the IPX networks. The Type 20 IPX packet is used specifically for

this purpose. This causes special handling of this packet by the Express XL/

XLT. When a router receives this type of packet, it rebroadcasts it across all

interfaces except the one it is received on and includes the network number of

that interface in the data portion of the packet. The IPX Router Specification

from Novell notes that Type 20 packets should not be propagated across slow-

er links with bandwidths of less than 1Mbps (like ISDN). However, when set

to Pass (def), the Express XL/XLT will allow these packets to propagate over

the WAN connection. This facilitates dial-on-demand applications. When set

to Block, all Type 20 packets are not propagated across the WAN connection.

61200.070L1-1

Express XL/XLT User Manual

Table of Contents

Express xlt 1200070l2