[Xorp-users] ospf4 ip-router-alert option

[Atanu Ghosh]

Hi,

Take a look at section 16.4 in RFC 2328.

     Atanu.

>>>>> "Michael" == Michael Fox <michael.fox at vyatta.com> writes:

    Michael> Thank you both.  Now, could you tackle my similar question
    Michael> regarding the ospf4 rfc1583-compatibility option?

    Michael> Thanks, Michael


    Michael> -----Original Message----- From: Hasso Tepper
    Michael> [mailto:hasso at linux.ee] Sent: Wednesday, May 09, 2007 4:18
    Michael> PM To: xorp-users at xorp.org Cc: Pavlin Radoslavov; Michael
    Michael> Fox Subject: Re: [Xorp-users] ospf4 ip-router-alert option

    Michael> Pavlin Radoslavov wrote:
    >> The TOS bits would matter only if you have diffserv or something
    >> like that and even then you would need them only in certain
    >> circumstances.

    Michael> Nope. Most of nowadays routers use QoS by default
    Michael> anyway. They reserve some percentage from every link for
    Michael> network control and they have QoS between forwarding plane
    Michael> and control plane (often even not configurable).  Don't set
    Michael> IPTOS_PREC_INTERNETCONTROL for routing protocols and you
    Michael> can be sure that your routing protocol sessions will be
    Michael> dropped even during very small attacks not having any
    Michael> operational impact to any other router or traffic in
    Michael> general.


    Michael> -- Hasso Tepper

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