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34 .\" $FreeBSD: src/usr.sbin/IPXrouted/IPXrouted.8,v 1.8.2.5 2003/03/11 21:13:47 trhodes Exp $
35 .\" $DragonFly: src/usr.sbin/IPXrouted/IPXrouted.8,v 1.2 2003/06/17 06:29:52 dillon Exp $
42 .Nd IPX Routing Information Protocol daemon
54 utility is invoked at boot time to manage the IPX routing tables.
55 The IPX routing daemon uses the Novell IPX Routing
56 Information Protocol in maintaining up to date kernel routing
60 .Bl -tag -width logfile
62 Do not reply on GetNearestServer SAP request.
64 Do not supply routing information (opposite of
70 to supply routing information whether it is acting as an internetwork
73 Do not supply Service Advertising Protocol
76 The default is to supply
80 All packets sent or received are
81 printed on the standard output. In addition,
83 will not divorce itself from the controlling terminal
84 so that interrupts from the keyboard will kill the process.
88 actions should be logged. This log contains information
89 about any changes to the routing tables and a history of
90 recent messages sent and received which are related to
97 for routing information packets. If the host is connected to
98 multiple IPX networks, it periodically supplies copies
99 of its routing tables to any directly connected hosts
104 is started, it uses the
108 directly connected interfaces configured into the
111 (the software loopback interface
112 is ignored). If multiple interfaces
113 are present, it is assumed the host will forward packets
117 utility then transmits a
119 packet on each interface (using a broadcast packet if
120 the interface supports it) and enters a loop, listening
125 packets from other hosts.
131 formulates a reply based on the information maintained in its
134 packet generated contains a list of known routes, each marked
137 metric (a count of 16, or greater, is
140 The metric associated with each
141 route returned provides a metric
142 .Em relative to the sender .
147 are used to update the routing tables if one of the following
148 conditions is satisfied:
151 No routing table entry exists for the destination network
152 or host, and the metric indicates the destination is ``reachable''
153 (i.e. the hop count is not infinite).
155 The source host of the packet is the same as the router in the
156 existing routing table entry. That is, updated information is
157 being received from the very internetwork router through which
158 packets for the destination are being routed.
160 The existing entry in the routing table has not been updated for
161 some time (defined to be 90 seconds) and the route is at least
162 as cost effective as the current route.
164 The new route describes a shorter route to the destination than
165 the one currently stored in the routing tables; the metric of
166 the new route is compared against the one stored in the table
170 When an update is applied,
172 records the change in its internal tables and generates a
174 packet to all directly connected hosts and networks.
177 of time (no more than 30 seconds) before modifying the kernel's
178 routing tables to allow possible unstable situations to settle.
180 In addition to processing incoming packets,
182 also periodically checks the routing table entries.
183 If an entry has not been updated for 3 minutes, the entry's metric
184 is set to infinity and marked for deletion. Deletions are delayed
185 an additional 60 seconds to insure the invalidation is propagated
188 Hosts acting as internetwork routers gratuitously supply their
189 routing tables every 30 seconds to all directly connected hosts
194 receives a SIGINFO signal the current contents of the RIP and SAP
195 tables are appended to the file /var/log/ipxrouted.dmp.