Re: [Lsr] RFC4750: OSPF Version 2 Management Information Base

Tulasi Rami Reddy N <tulasi.ietf@gmail.com> Wed, 09 December 2020 11:11 UTC

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From: Tulasi Rami Reddy N <tulasi.ietf@gmail.com>
Date: Wed, 9 Dec 2020 16:41:15 +0530
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Subject: Re: [Lsr] RFC4750: OSPF Version 2 Management Information Base
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[ Sorry, My previous mail was truncated]
Hi ,

OSPFv2 adjacency will be formed on a numbered LAN only below both
conditions are met:
           1. Common IP subnet
           2. Matching network mask.
>From the OSPFv2 MIB, there is only one error defined.

     ospfConfigErrorType OBJECT-TYPE
          SYNTAX       INTEGER {

                          *netMaskMismatch (7),*
           }

I believe this is for the case 2 (when mask is mismatched).

Let's take below example:

  RTA    (11.1.1.2/24)   --------     (10.1.1.1/24) RTB

Here, src IP is not matching to the Rx interface IP subnet, then what is
the error type to be set?
Should this be considered as generic input processing error and
only generate
*ospfIfRxBadPacket * notification or *netMaskMismatch  *notification?
Should we need a new type here?

"

The generic input processing of OSPF packets will

have checked the validity of the IP header and the OSPF packet
header."





Thanks,
Tulasi.
On Wed, Dec 9, 2020 at 4:27 PM Tulasi Rami Reddy N <tulasi.ietf@gmail.com>
wrote:

> Hi ,
>
> OSPFv2 adjacency will be formed on a numbered LAN only when
>            1. Common IP subnet
> 2.matching network mask.
> From the
>
> Thanks,
> TUlasi.
>