IPXrouted man page on FreeBSD

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IPXROUTED(8)		  BSD System Manager's Manual		  IPXROUTED(8)

NAME
     IPXrouted — IPX Routing Information Protocol daemon

SYNOPSIS
     IPXrouted [-N] [-q] [-s] [-S] [-t] [logfile]

DESCRIPTION
     The IPXrouted utility is invoked at boot time to manage the IPX routing
     tables.  The IPX routing daemon uses the Novell IPX Routing Information
     Protocol in maintaining up to date kernel routing table entries.

     Available options:

     -N	      Do not reply on GetNearestServer SAP request.

     -q	      Do not supply routing information (opposite of -s option below).

     -s	      Forces IPXrouted to supply routing information whether it is
	      acting as an internetwork router or not.

     -S	      Do not supply Service Advertising Protocol (SAP) information.
	      The default is to supply SAP information.

     -t	      All packets sent or received are printed on the standard output.
	      In addition, IPXrouted will not divorce itself from the control‐
	      ling terminal so that interrupts from the keyboard will kill the
	      process.

     logfile  Name of file in which IPXrouted's actions should be logged.
	      This log contains information about any changes to the routing
	      tables and a history of recent messages sent and received which
	      are related to the changed route.

     In normal operation IPXrouted listens for routing information packets.
     If the host is connected to multiple IPX networks, it periodically sup‐
     plies copies of its routing tables to any directly connected hosts and
     networks.

     When IPXrouted is started, it uses the SIOCGIFCONF ioctl(2) to find those
     directly connected interfaces configured into the system and marked “up”
     (the software loopback interface is ignored).  If multiple interfaces are
     present, it is assumed the host will forward packets between networks.
     The IPXrouted utility then transmits a request packet on each interface
     (using a broadcast packet if the interface supports it) and enters a
     loop, listening for request and response packets from other hosts.

     When a request packet is received, IPXrouted formulates a reply based on
     the information maintained in its internal tables.	 The response packet
     generated contains a list of known routes, each marked with a “hop count”
     metric (a count of 16, or greater, is considered “infinite”).  The metric
     associated with each route returned provides a metric relative to the
     sender.

     Response packets received by IPXrouted are used to update the routing
     tables if one of the following conditions is satisfied:

     ·	 No routing table entry exists for the destination network or host,
	 and the metric indicates the destination is “reachable” (i.e., the
	 hop count is not infinite).

     ·	 The source host of the packet is the same as the router in the exist‐
	 ing routing table entry.  That is, updated information is being
	 received from the very internetwork router through which packets for
	 the destination are being routed.

     ·	 The existing entry in the routing table has not been updated for some
	 time (defined to be 90 seconds) and the route is at least as cost
	 effective as the current route.

     ·	 The new route describes a shorter route to the destination than the
	 one currently stored in the routing tables; the metric of the new
	 route is compared against the one stored in the table to decide this.

     When an update is applied, IPXrouted records the change in its internal
     tables and generates a response packet to all directly connected hosts
     and networks.  The routed(8) utility waits a short period of time (no
     more than 30 seconds) before modifying the kernel's routing tables to
     allow possible unstable situations to settle.

     In addition to processing incoming packets, IPXrouted also periodically
     checks the routing table entries.	If an entry has not been updated for 3
     minutes, the entry's metric is set to infinity and marked for deletion.
     Deletions are delayed an additional 60 seconds to insure the invalidation
     is propagated to other routers.

     Hosts acting as internetwork routers gratuitously supply their routing
     tables every 30 seconds to all directly connected hosts and networks.

     If IPXrouted receives a SIGINFO signal the current contents of the RIP
     and SAP tables are appended to the file /var/log/ipxrouted.dmp.

SEE ALSO
     ipx(3)

HISTORY
     The IPXrouted utility first appeared in FreeBSD 2.2.

BSD			       October 11, 1995				   BSD
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