[HECnet] Maximum number of L2 routers?

Hans Vlems hvlems at zonnet.nl
Sat Feb 28 12:21:49 PST 2015


Yeah of course you can have more than one L2 router in an area, didn't think of it :)
About the 10base5 segment, that was limited in length to 500 meters. Transceivers must be at least 2.5 meters apart, hence the 200 nodes. This was before a DELNI was invented. If my failing memory doesn't fail me that 200 node limit remained the same with Delni's.

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Verzonden: zaterdag 28 februari 2015 20:55
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Onderwerp: Re: [HECnet] Maximum number of L2 routers?

On 2015-02-28 20:51, Hans Vlems wrote:
64:-)?

You can definitely have more than one L2 router per area... :-)

I don't know for sure, as you probably    have guessed...
   There is an ncp executor parameter called maximum broadcast routers, default value 32 iirc.
Is there an architectural limit, depends on what you mean by ethernet segment. A 10base5 segment was limited to 200 nodes. 64 L2 routers might put a hefty broadcast load on it. On an extended ethernet LAN there is likely no technical limit.

Really? I have some vague memory of some limit of an ethernet segment, 
but I can't recall any details now. Why 200?

Johnny


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Verzonden: zaterdag 28 februari 2015 20:37
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Onderwerp: [HECnet] Maximum number of L2 routers?

Hello, list,

I'm trying to remember what is the maximum number of area routers allowed in a DECNET Phase IV ethernet segment. Anyone of you have that information at hand?

On other news, the old macbook I was using as home server has died, after years of service beyond the call of duty. I'm setting up my stuff using several smallish ARM computers. To be specific, now I'm running a cubietruck and and Odroid-C1 (and a raspberry Pi as router/firewall). I'm having trouble with the net connectivity, so some yo-yo disconnects from area 7 should be expected. Not so hard as last sunday, but I'm still doing quite a lot of reboots.

BTW, the SG1 multinet link seems to be down again (unless it is a problem in my side, which is completely possible).



-- 
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol



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