| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 31.1 | Repeaters are like electrical "switches" | NOHOST::LEVIN | Bryan, LENaC Engineering, MLO3-3/U39 | Thu Feb 20 1992 22:08 | 12 |
| Repeaters, by definition, are supposed to isolate any electrical
problems between segments.
So, if there is a short, open, bad voltage level, etc, on one side of
the repeater, the conceptual "switch" inside the repeater should open,
thereby breaking the contact between the two segments.
Same for multi-port repeaters.
So, no one segment should bring down the others.
.bl
|
| 31.2 | How can you have 110 nodes on a 90T? | EMDS::SEAVER | LENAC Net Mgnt Mktg 223-4573 | Sat Feb 22 1992 18:08 | 4 |
| Pardon my ignorance, but how can you have 110 nodes on a 90T? I can
understand that on a 90C, but I thought you could only have one node
per 10baseT port and that was an advantage when isolating a fault over
a daisy chained 90C port.
|
| 31.3 | Should auto-segment... | FLUKES::SUTTON | He roams the seas in freedom... | Mon Feb 24 1992 09:08 | 8 |
| Actually, the base note says 110 nodes on 16 90Ts; assuming eight each,
you've got a potential maximum of 128.
Still, no single segment (in this case, node) failure should bring down
your entire network; that segment should auto-partition until the fault
is corrected.
/Harry
|
| 31.4 | A similar problem. | KERNEL::HOGGAND | | Fri Apr 23 1993 04:41 | 35 |
| Hi,
I have a similar query related to the base note.
My customer has the following setup:
|
Bridge link
to VAXen
|
+-------------------------------+
| 5 * 90T | 2 * 90C | Bridge 90 +--+
+-------------------------------+ |
HUB 1 |
|
|
|
+-------------------------------+ |
| 5 * 90TL +--+
+-------------------------------+
HUB 2
It is possible for someone to plug a twisted pair terminal into the
repeater instead of the server by mistake. When this happens, all users
on the servers have huge performance problems, typically timeouts on
logins to the VAXen.
As I understand it, the repeater should segment if the wrong device is
plugged in. We have tried a replacement repeater with no success.
Can anyone spot the things I haven't ??
Thanks, Dave
29309
|
| 31.5 | segmentation problem | BLKPUD::ANSONR | I haven't had a wash in days | Fri Jul 23 1993 10:49 | 14 |
|
I have a similar problem....
customer using a repeater90c,pulls thinwire out of the ports on the
repeater and seems to bring rest on the network to a standstill until
it recovers by itself.
Seems to me the repeater is not segmenting the port quick enough as
the segmentation light on the port does not seem to go off for very
quickly(so the customer says)...could this be the cause or am I talking
rubbish???
repeater is standalone and is in a legal configuration.
any comment would be very welcome.
ta Rich.
|