Re: [GROW] [Editorial Errata Reported] RFC4632 (1824)

Tony Li <tony.li@tony.li> Thu, 06 August 2009 02:50 UTC

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Date: Wed, 05 Aug 2009 09:42:44 -0700
From: Tony Li <tony.li@tony.li>
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Cc: grow@ietf.org, dromasca@avaya.com, drajasek@cisco.com
Subject: Re: [GROW] [Editorial Errata Reported] RFC4632 (1824)
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The fix looks good to me.  Thanks.

Tony

RFC Errata System wrote:
> The following errata report has been submitted for RFC4632,
> "Classless Inter-domain Routing (CIDR): The Internet Address Assignment and Aggregation Plan".
> 
> --------------------------------------
> You may review the report below and at:
> http://www.rfc-editor.org/errata_search.php?rfc=4632&eid=1824
> 
> --------------------------------------
> Type: Editorial
> Reported by: Dande Rajasekhar <drajasek@cisco.com>
> 
> Section: 6.1
> 
> Original Text
> -------------
> To make this example more realistic, assume that C4 and C5 are multi-
>    homed through some other service provider, "PB".  Further assume the
>    existence of a site, "C7", that was originally connected to "RB" but
>    that has moved to "PA".  For this reason, it has a block of network
>    numbers that are assigned out PB's block of (the next) 2048 x /24.
> 
>    o  C7.  Assign 10.32.0 through 10.32.15.  This block is described by
>       the route 10.32.0.0/20 (mask 255.255.240.0).
> 
> For the multi-homed sites, assume that C4 is advertised as primary
>    via "RA" and secondary via "RB"; and that C5 is primary via "RB" and
>    secondary via "RA".  In addition, assume that "RA" and "RB" are both
>    connected to the same transit service provider, "BB".
> 
>    Graphically, this topology looks something like this:
> 
>    10.24.0.0 -- 10.24.7.0__         __10.32.0.0 - 10.32.15.0
>    C1: 10.24.0.0/21        \       /  C7: 10.32.0.0/20
>                             \     /
>                              +----+                              +----+
>    10.24.16.0 - 10.24.31.0_  |    |                              |    |
>    C2: 10.24.16.0/20       \ |    |  _10.24.12.0 - 10.24.15.0__  |    |
>                             \|    | / C4: 10.24.12.0/20        \ |    |
>                              |    |/                            \|    |
>    10.24.8.0 - 10.24.11.0___/| PA |\                             | PB |
>    C3: 10.24.8.0/22          |    | \__10.24.32.0 - 10.24.33.0___|    |
>                              |    |    C5: 10.24.32.0/23         |    |
>                              |    |                              |    |
>    10.24.34.0 - 10.24.35.0__/|    |                              |    |
>    C6: 10.24.34.0/23         |    |                              |    |
>                              +----+                              +----+
>                                ||                                  ||
>    routing advertisements:     ||                                  ||
>                                ||                                  ||
>            10.24.12.0/22 (C4)  ||              10.24.12.0/22 (C4)  ||
>            10.32.0.0/20 (C7)   ||              10.24.32.0/23 (C5)  ||
>            10.24.0.0/13 (PA)   ||              10.32.0.0/13 (PB)   ||
>                                ||                                  ||
>                                VV                                  VV
>                             +---------- BACKBONE NETWORK BB ----------+
> 
> 
> Corrected Text
> --------------
> To make this example more realistic, assume that C4 and C5 are multi-
>    homed through some other service provider, "PB".  Further assume the
>    existence of a site, "C7", that was originally connected to "PB" but
>    that has moved to "PA".  For this reason, it has a block of network
>    numbers that are assigned out PB's block of (the next) 2048 x /24.
> 
>    o  C7.  Assign 10.32.0 through 10.32.15.  This block is described by
>       the route 10.32.0.0/20 (mask 255.255.240.0).
> 
> For the multi-homed sites, assume that C4 is advertised as primary
>    via "PA" and secondary via "PB"; and that C5 is primary via "PB" and
>    secondary via "PA".  In addition, assume that "PA" and "PB" are both
>    connected to the same transit service provider, "BB".
> 
>    Graphically, this topology looks something like this:
> 
>    10.24.0.0 -- 10.24.7.0__         __10.32.0.0 - 10.32.15.0
>    C1: 10.24.0.0/21        \       /  C7: 10.32.0.0/20
>                             \     /
>                              +----+                              +----+
>    10.24.16.0 - 10.24.31.0_  |    |                              |    |
>    C2: 10.24.16.0/20       \ |    |  _10.24.12.0 - 10.24.15.0__  |    |
>                             \|    | / C4: 10.24.12.0/20        \ |    |
>                              |    |/                            \|    |
>    10.24.8.0 - 10.24.11.0___/| PA |\                             | PB |
>    C3: 10.24.8.0/22          |    | \__10.24.32.0 - 10.24.33.0___|    |
>                              |    |    C5: 10.24.32.0/23         |    |
>                              |    |                              |    |
>    10.24.34.0 - 10.24.35.0__/|    |                              |    |
>    C6: 10.24.34.0/23         |    |                              |    |
>                              +----+                              +----+
>                                ||                                  ||
>    routing advertisements:     ||                                  ||
>                                ||                                  ||
>            10.24.12.0/22 (C4)  ||              10.24.12.0/22 (C4)  ||
>            10.32.0.0/20 (C7)   ||              10.24.32.0/23 (C5)  ||
>            10.24.0.0/13 (PA)   ||              10.32.0.0/13 (PB)   ||
>                                ||                                  ||
>                                VV                                  VV
>                             +---------- BACKBONE NETWORK BB ----------+
> 
> 
> Notes
> -----
> All the reference of "RA" and "RB" to be replaced with "PA" and "PB".
> 
> Instructions:
> -------------
> This errata is currently posted as "Reported". If necessary, please
> use "Reply All" to discuss whether it should be verified or
> rejected. When a decision is reached, the verifying party (IESG)
> can log in to change the status and edit the report, if necessary. 
> 
> --------------------------------------
> RFC4632 (draft-ietf-grow-rfc1519bis-04)
> --------------------------------------
> Title               : Classless Inter-domain Routing (CIDR): The Internet Address Assignment and Aggregation Plan
> Publication Date    : August 2006
> Author(s)           : V. Fuller, T. Li
> Category            : BEST CURRENT PRACTICE
> Source              : Global Routing Operations
> Area                : Operations and Management
> Stream              : IETF
> Verifying Party     : IESG
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