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I found this in the 3.8 manual for xmr/mx:<BR>
<BR><FONT face=Helvetica-Bold color=#0000ff><FONT face=Helvetica-Bold color=#000000 size=3>
<P align=left>Configuring a PE to Allow Routes with its AS Number</P></FONT></FONT><FONT face=Helvetica><FONT face=Helvetica>
<P align=left><FONT size=3>BGP rejects routes that contain its own AS number within its AS_PATH attribute to prevent routing loops. In an</FONT></P>
<P align=left><FONT size=3>MPLS/VPN hub and spoke topology this can stop legitimate routes from being accepted. The </FONT></FONT></FONT><FONT face="Times New Roman" size=3>allowas-in</FONT></P><FONT face=Helvetica><FONT face=Helvetica>
<P align=left><FONT size=3>command fixes this problem by allowing you to set a parameter that disables the AS_PATH check function for</FONT></P>
<P align=left><FONT size=3>routes learned from a specified location.</FONT></P>
<P align=left><FONT size=3>To configure a PE to disable the AS_PATH check function for routes sent to it by its BGP neighbor (a CE router</FONT></P>
<P align=left><FONT size=3>with the IP address 33.33.36.2) for a maximum limit of 3 occurrences of the route, enter the following command at</FONT></P>
<P align=left><FONT size=3>the BGP VRF configuration level.</FONT></P></FONT></FONT><FONT face=Courier><FONT face=Courier size=3>
<P align=left>NetIron(config-bgp-ipv4u-vrf)# neighbor 33.33.36.2 allowas-in 3</P></FONT></FONT><I><FONT face=Helvetica-BoldOblique><FONT face=Helvetica-BoldOblique>
<P align=left><FONT size=3>Syntax: </FONT></I></FONT></FONT><FONT face=Helvetica size=1><FONT face=Helvetica size=1><FONT size=3>neighbor <IPaddress> allowas-in <asn_limit></FONT></P>
<P align=left><FONT size=3>The <IPaddress> variable is the IP address of the neighbor CE router that the PE router will accept routes with the</FONT></P>
<P align=left><FONT size=3>same AS number.</FONT></P>
<P align=left><FONT size=3>The asn_limit value prevents loops by limiting the number of occurrences that the PE’s AS number will be</FONT></P>
<FONT size=3>accepted in routes that are received from the specified router.</FONT><BR>
</FONT></FONT><BR><BR>> Date: Mon, 27 Oct 2008 13:32:57 +0100<BR>> From: ronald.esveld@qi.nl<BR>> To: frank@openminds.be; foundry-nsp@puck.nether.net<BR>> Subject: Re: [f-nsp] foundry equivalent of allowas-in<BR>> <BR>> Foundry uses allow-as in as well :)<BR>> <BR>> Ronald<BR>> <BR>> -----Oorspronkelijk bericht-----<BR>> Van: foundry-nsp-bounces@puck.nether.net<BR>> [mailto:foundry-nsp-bounces@puck.nether.net] Namens Frank Louwers<BR>> Verzonden: maandag 27 oktober 2008 12:13<BR>> Aan: foundry-nsp@puck.nether.net<BR>> Onderwerp: [f-nsp] foundry equivalent of allowas-in<BR>> <BR>> Hi,<BR>> <BR>> Is there a Foundry equivalent of the Cisco "allowas-in" command on a <BR>> BGP nei? I have a new PoP to set up and the bgp transit there is <BR>> already delivered but the L2 link between the new pop and my main net <BR>> will take a few weeks to get delivered.<BR>> <BR>> In the mean time I wanted to allowas-in my own asn...<BR>> <BR>> Any suggestions?<BR>> <BR>> Regards,<BR>> <BR>> Frank<BR>> _______________________________________________<BR>> foundry-nsp mailing list<BR>> foundry-nsp@puck.nether.net<BR>> http://puck.nether.net/mailman/listinfo/foundry-nsp<BR>> _______________________________________________<BR>> foundry-nsp mailing list<BR>> foundry-nsp@puck.nether.net<BR>> http://puck.nether.net/mailman/listinfo/foundry-nsp<BR><BR><br /><hr />Want to read Hotmail messages in Outlook? The Wordsmiths show you how. <a href='http://windowslive.com/connect/post/wedowindowslive.spaces.live.com-Blog-cns!20EE04FBC541789!167.entry?ocid=TXT_TAGLM_WL_hotmail_092008' target='_new'>Learn Now</a></body>
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