Re: Multihoming - implementing RFC 1122

[Lars Eggert]

Juan Francisco Rodriguez Hervella wrote:

I don't like the strong ES model. IMHO, with weak ES model we can
obtain the best of multihoming benefits. the strong ES model
makes use of source routing, which might forbid the communication
where it could be possible.

I don't see why a host should discard a packet for him, only
because it has arrived at other interface.

Layer 2 protocols do.

Layer 3 has traditionally followed the weak host model, while layer 2 protocols usually follow the strong host model. Having the option of enabling strong host for layer 3 is beneficial for layer 3 VPNs, where IP is used as both link and network protocol.

Lars
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Lars Eggert <[EMAIL PROTECTED]> USC Information Sciences Institute

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