Steve said...
> This may be a little off topic.  But, since it envolves connectivity to
> the HP3000, I'll go for it.
>
> We are in the process of installing additional data cables in our branch
> libraries. Two of the sites have distance restrictions that will require
> establishing an intermediate wiring closet.  The main closet has one
> J2600 10baseT hub.  I need to place a second 10baseT hub in the
> intermediate closet.  Can I cascade these two hubs using a 4 pair UTP
> crossover cable between any one of the 12 RJ45 ports on each of the
> hubs?  I assume that I would also need a straight through 4 pair UTP
> cable for the SNMP management (IN/OUT) ports between the two closets
> (yes?).

What I have found:

The HP documentation is real bad in this area.

It is better if you can to use either a UTP tranceiver port in the J2600.
If you have an existing AUI tranceiver port, purchase a cheap
Allied-Telesyn UTP tranceiver.  On the other 2600, you can just plug it in
any port.  With this arrangement, you can use a normal straight through
cable.

I don't know any of the ramifications for the SNMP mangement.  That is
something we will be starting to get into in the comming weeks.

>
> Also, would I use the same cascading technique if one of these is a
> J3200?  And, how could I tie the J2600 and J3200 together for SNMP
> management?  The J3200 doesn't use RJ45 connections between the
> management modules.

I would think that both this J2600 and J3200 would need management modules
and you would just connect the data and not cascade the hubs for any
management advantage.  I have NOT worked with the new hubs yet, so I can't
say for sure.

>
> The device reference manuals and the HP Web site aren't very clear about
> either of these senarios.  Any help will be appreciated.


You got that right.

>
> Steve Barrett


/alan
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