We have a network here comprising of twenty thin wire segments attached
together via an Isolan multiport repeater. Communication between
Alphas on the same segment is fine (1100 kb/s) but communication
between Alphas on different segments is dreadful (15 kb/s). What's
also strange is that one set of Alphas are behind a different segment but
behind a bridge. FTP transfers to those Alphas run at around 100 kb/s.
Transfers between Suns and Alphas on different segments always run faster
than transfers between Alphas on different segments.
Maybe a picture would show it best:
+---------------+
| Isolan |
| repeater |
+--+-+-...-+-+--+
| | . . | |
| | . . | |
/ | | \
______________/ | | \____________
/ _____/ \______ \
| / \ |
| | | *--(AXP 4)
| | | |
(AXP 1)--* *--(AXP 8) * +---+---+
(AXP 2)--* *--(SUN 2) * | bridge|
(AXP 3)--* | | +---+---+
(SUN 1)--* - - |
| *--(AXP 5)
- *--(AXP 6)
*--(AXP 7)
|
-
axp1 <--> axp2 : 1100 kb/s
axp1 <--> axp4 : 15 kb/s **
axp1 <--> axp5 : 100 kb/s **
sun1 <--> axp4 : 330 kb/s
sun1 <--> axp5 : 230 kb/s
Does anyone have any idea what could cause this? Are the Alphas putting
out packets so fast that the multiport repeated can't handle it (and if
so, how can I slow them down).
Thanks,
Ray
Received on Wed May 17 1995 - 04:13:16 NZST