On 02/08/2010 15:07, "Wes Beebee" <wbee...@cisco.com> wrote: > One of the problems I have with this draft is that I don¹t think all of the > hardware platforms necessarily will support it in hardware. Saying, ³oh well, > it¹s a layer violation², is not good enough we routinely look at the > ethertype (in the L2 header) of the packet and match it up with the L3 header > to prevent bogus packets from exercising paths in the router that can lead to > crashes. This is called > ³sanity check², and it is used for both security and stability reasons. Just > because the RP doesn¹t do this kind of check (presumably for > performance/layering reasons), doesn¹t mean that the check isn¹t being done in > hardware. Good luck trying to get the hardware teams to upgrade their > hardware... > > Woj> It¹s useful to point out that such a check is done based on L2/L3 source > addresses, NOT destination. As per the other thread, we¹d be interested to > hear of documented cases where such L2/L3 destination checking is used for > mcast. We have not found any. > > -Woj. > > - Wes > > > On 7/31/10 1:54 AM, "Fred Baker" <f...@cisco.com> wrote: > >> This is to initiate a two week working group last call of >> draft-gundavelli-v6ops-l2-unicast. Please read it now. If you find nits >> (spelling errors, minor suggested wording changes, etc), comment to the >> authors; if you find greater issues, such as disagreeing with a statement or >> finding additional issues that need to be addressed, please post your >> comments to the combined lists. >> >> We are looking specifically for comments on the importance of the document as >> well as its content. If you have read the document and believe it to be of >> operational utility, that is also an important comment to make. >> >> >> >> -------------------------------------------------------------------- >> IETF IPv6 working group mailing list >> ipv6@ietf.org >> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 >> -------------------------------------------------------------------- >
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