Re: [Anima] ANIMA when there is a system-wide issue
Michael Richardson <mcr+ietf@sandelman.ca> Tue, 23 February 2021 22:54 UTC
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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Toerless Eckert <tte@cs.fau.de>
cc: Anima WG <anima@ietf.org>
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Date: Tue, 23 Feb 2021 17:53:54 -0500
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Subject: Re: [Anima] ANIMA when there is a system-wide issue
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Toerless Eckert <tte@cs.fau.de> wrote: >> Yes, that's a different problem, but I agree it is related. >> >> For the L2 SDN that does not use STP because it does not want blocked >> ports, but rather wants to use all the bandwidth, the problem is keep >> the ACP DULL multicast from causing loops. > Uhmm.. not clar. Forget ACP DULL... You have an ethernet without STP > but with rdundant paths. How do you avoid loops ? Do you use one of the > IEEE SPF alternatives to STP ? Yes, maybe one of the alternatives, maybe because some SDN controller deals with updating the right forwarding tables. > Last time i checked OpenBMC git was very confusing, seemed like mostly > facebook internal adoption, but couldn't figure out any option i could > easily buy individually as an experimentation platform. Well, there is significant progress. But you are right: it is hard to find actual hardware you can run it on without working for the hardware company. But, that's because of TPM mechansim. I also notice how hard it is to run alternate firmware on Cisco/Junipier/Huawei/etc. >> One might still want the ACP running even if the context of a BMC user >> who shoots eirself in the foot. The Linux kernel gives one the >> "macvlan" which is effectively a kind of bridge (actually mutually >> exclusive with being in the a bridge). The macvlan gets a kernel >> allocated randomized mac address, and can be moved into a network >> namespace and effectively hidden, however, there does not seem to be a >> way to keep the physical interface from being marked down. > Right. Ideally you would have SrIOV to create a PCI-bus level disjoint > ethernet interface for the ACP. Alas, today, like MacSEC this is an > option only on high-end Ethernet PCI controllers. Or else you have to > much around in he linux kernel to create protectiona against unintended > shutdowns. Yes, so there are issues. tte> Need to read through EAP over Ethernet to check what we could tte> share. I forgot all about it. But ultimatly, its going to be a tte> small "selector-header" on top of the new ethertype that we need to tte> define. >> >> You want chapter 11 of 802.1X-2020. Table 11-3 lists the 9 EAPOL >> types used. No equivalent to IANA Consideratons exist, so I think >> that it would require a revision by the IEEE to allocate a code. That >> would really be enough. > Right. I didn't mean to use EAPOL. I meant to document all the > arguments why NOT to use it, but then also reuse all the reuseable > ideas that we need. ah. -- Michael Richardson <mcr+IETF@sandelman.ca> . o O ( IPv6 IøT consulting ) Sandelman Software Works Inc, Ottawa and Worldwide
- [Anima] ANIMA when there is a system-wide issue Brian E Carpenter
- Re: [Anima] ANIMA when there is a system-wide iss… Michael Richardson
- Re: [Anima] ANIMA when there is a system-wide iss… Brian E Carpenter
- Re: [Anima] ANIMA when there is a system-wide iss… Brian E Carpenter
- Re: [Anima] ANIMA when there is a system-wide iss… Ciavaglia, Laurent (Nokia - FR/Paris-Saclay)
- Re: [Anima] ANIMA when there is a system-wide iss… Brian E Carpenter
- Re: [Anima] ANIMA when there is a system-wide iss… Michael Richardson
- Re: [Anima] ANIMA when there is a system-wide iss… Toerless Eckert
- Re: [Anima] ANIMA when there is a system-wide iss… Toerless Eckert
- Re: [Anima] ANIMA when there is a system-wide iss… Michael Richardson
- Re: [Anima] ANIMA when there is a system-wide iss… Toerless Eckert
- Re: [Anima] ANIMA when there is a system-wide iss… Michael Richardson
- Re: [Anima] ANIMA when there is a system-wide iss… Brian E Carpenter
- Re: [Anima] ANIMA when there is a system-wide iss… Michael Richardson
- Re: [Anima] ANIMA when there is a system-wide iss… Toerless Eckert
- Re: [Anima] ANIMA when there is a system-wide iss… Toerless Eckert
- Re: [Anima] ANIMA when there is a system-wide iss… Michael Richardson
- Re: [Anima] ANIMA when there is a system-wide iss… Toerless Eckert
- Re: [Anima] ANIMA when there is a system-wide iss… Michael Richardson