[7668] in North American Network Operators' Group

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Sprint filters

daemon@ATHENA.MIT.EDU (Henry Kilmer)
Wed Feb 19 09:24:14 1997

Date: Wed, 19 Feb 1997 09:21:07 -0500 (EST)
From: Henry Kilmer <hank@rem.com>
To: Hank Nussbacher <hank@ibm.net.il>
Cc: nanog@merit.edu
In-Reply-To: <Pine.A32.3.95-heb-2.07.970219134650.42421A-100000@rex.ibm.net.il>


Hank Nussbacher writes:
>I have an organization which I allocated 147.237.0.0/16 from my country
>block.  They then wanted to subnet and hand out /24s and /23s to the
>dozens of offices they have scattered thru the country and to allow each
>office to connect to whatever ISP they wish.  I told them that Sprint
>would block the announcements of /24s and the like when coming from
>147.237.0.0.  
>
>They said, then why does Sprint allow its customers to announce /24s from
>their nets?  They gave me as examples: 148.212.0.0 and 145.248.0.0.
>I checked and sure enough here is what I found:

Sprint's customers pay them to announce their routes.  If someone else
doesn't like it, they should filter - like AGIS has done.

-Hank

>*>i148.212.1.0/24   192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.2.0/24   192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.3.0/24   192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.4.0/24   192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.5.0/24   192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.6.0/24   192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.7.0/24   192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.8.0/24   192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.9.0/24   192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.10.0/24  192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.11.0/24  192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.12.0/24  192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.13.0/24  192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.14.0/24  192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.15.0/24  192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.16.0/20  192.121.156.41              100      0 1800 1239 1791
>1292 i
>*>i148.212.32.0/20  192.121.156.41              100      0 1800 1239 1791
>1292 i
>
>I didn't have a good answer.  Can anyone tell me what I should tell this
>organization?
>
>Thanks,
>Hank
>

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