[j-nsp] Juniper EX4550: 32k MAC Addresses but only 8k ARP Entries? What does that mean?

Saku Ytti saku at ytti.fi
Thu Sep 8 12:27:43 EDT 2016

On 8 September 2016 at 17:59, v <vekt0r7 at gmx.net> wrote:

> I find the following two lines:
> "MAC Addresses 32k (EX4550) vs. 288k (EX4600)
> ARP Entries 8k (EX4550) vs. 48k (EX4600)"
> Can anyone explain the difference between those two metrics?
> My Thoughts:
> I guess "ARP Entries" is the number of MAC-to-IP mappings, which is relevant
> for using the Layer 3 capabilites of the switch.
> And "MAC Addresses" is the number of MAC-to-Port mappings. So if i build a
> network with multiple switches connected one after another, I will only be
> able to build a network with up to 32k hosts. Is that correct?

Yes, that's exactly correct.


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