A question for all you network gurus.
I don't really understand all this modern network stuff ( - ah SNA - there was
a technology I could grok :) ) So apologies if I make any obvious mistakes.
Our main data centre has just growed over the years. Currently each
application has more or less its own switch, subnet and VLAN set up.
Currently TSM backs up clients on two of these subnets and the server has
gigabit interfaces into each. We are how expanding our reach and need to
address *all* subnets.
The issue is that for clients outside of the two directly addressed subnets,
traffic appears to run through the core router of the network ( this is where
my understanding gets hazy), but in any case we can only get about 3MB/sec
throughput this way (tsm, ftp, whatever). This is unacceptable, but obviously
we can't just keep adding network interfaces. Even if it was acceptable, I'm
sure the network people would complain about the load on a key piece of
equipment.
So ideally, I want the TSM server to be on *every* subnet. As I understand
it, if I get the server port configured to see all traffic on all vlans, and
then provide an IP alias on that adapter on each subnet, then after the
switches have resolved the adapter mac address, the switching is done direct at
a lower level and the bottleneck is removed.
Questions.
1. Is my understanding of the cause of the bottleneck correct? If not, what
else could it be?
2. Is it possible to set up a switch port to see all vlans?
3. Is it necessary to set up an alias on every subnet? Some of them don't have
spare addresses.
Thanks for your help
Steve.
Steve Harris
AIX and TSM Admin
Queensland Health, Brisbane Australia.
***********************************************************************************
This email, including any attachments sent with it, is confidential and for the
sole use of the intended recipient(s). This confidentiality is not waived or
lost, if you receive it and you are not the intended recipient(s), or if it is
transmitted/received in error.
Any unauthorised use, alteration, disclosure, distribution or review of this
email is prohibited. It may be subject to a statutory duty of confidentiality
if it relates to health service matters.
If you are not the intended recipient(s), or if you have received this email in
error, you are asked to immediately notify the sender by telephone or by return
email. You should also delete this email and destroy any hard copies produced.
***********************************************************************************
|
