66 lines
3.9 KiB
HTML
66 lines
3.9 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="BLOCK" />
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<meta name="abstract" content="The BLOCK parameter prevents the network route received on the specified interface from being included in the RouteD routes table." />
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<meta name="description" content="The BLOCK parameter prevents the network route received on the specified interface from being included in the RouteD routes table." />
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<meta name="DC.subject" content="BLOCK parameter, RouteD server, BLOCK, RIP_INTERFACE statement" />
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<meta name="keywords" content="BLOCK parameter, RouteD server, BLOCK, RIP_INTERFACE statement" />
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<meta name="DC.Relation" scheme="URI" content="rzal6addparm.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2000, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2000, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="block" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>BLOCK</title>
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</head>
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<body id="block"><a name="block"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">BLOCK</h1>
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<div><p>The BLOCK parameter prevents the network route received on the
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specified interface from being included in the RouteD routes table.</p>
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<p>Consequently, the network is unknown and not forwarded to any other routers.
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Specify networks that you want to block by one of the following methods:</p>
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<dl><dt class="dlterm">Network</dt>
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<dd>A network that is specified as an IP address and a mask or as an IP address
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and a bit number. The bit number n indicates which bit in the 0 – n bits of
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the IP address (counting left to right) is the last bit of the network portion
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of the IP address. If the MASK and bit number are missing, the system calculates
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a network by using the subnet mask of the interface specified through the
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ADDTCPIFC CL command.</dd>
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<dt class="dlterm">PRIVATE</dt>
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<dd>The PRIVATE keyword refers to the sets of IP addresses that are designated
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for use by the Internet Assigned Number Authority (IANA) only within private
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internets. For more information, see RFC 1918, section 3. <ul><li>10.0.0.0 to 10.255.255.255 (10/8 prefix) – 1 class A network.</li>
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<li>172.16.0.0 to 172.31.255.255 (172.16/12 prefix) – 16 contiguous class
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B networks.</li>
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<li>192.168.0.0 to 192.168.255.255 (192.168/16 prefix) – 256 contiguous class
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C networks.</li>
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</ul>
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</dd>
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</dl>
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<p>When the RouteD server tries to send a route, it processes multiple forward
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parameters in the supplied order. The first forward parameter that allows
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the system to send the route over the specified interface ends the processing.
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The default is to forward.</p>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzal6addparm.htm" title="You can also encounter additional RIP_INTERFACE parameters in your network.">Additional parameters</a></div>
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</div>
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</div>
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</body>
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</html>
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