| Title: | DEC Network Integration Server (DECNIS) |
| Notice: | Please read note 1 to use this conference effectively |
| Moderator: | MARVIN::WELCH |
| Created: | Wed Sep 18 1991 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 3660 |
| Total number of notes: | 15082 |
Hi, One of my customer replace all their DEMSAs with DECNIS 500 running X25 with W618 wan card and DECNIS Version V3.1. However, the customer found that the performance of DECNIS is slower than the old DEMSAs. I would like to know is there any tunning service or guidelines for DECNIS especially X25? Why DEMSA is faster than DECNIS? Any ways to improve the performance? Buy a MPC III and upgrade to V4 help? Thanks for your help in advance. Kenneth Leung Hong Kong MCS
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 3569.1 | MARVIN::SIMS | Andrew Sims, IPEG Reading. | Tue Mar 11 1997 08:42 | 12 | |
What is the configuration, what sort X.25 traffic is involved (lots of
virtual circuits, lots of call set up).
One thing that you could do is set the LAPB holdback timer to a
non-zero value (say a 100ms). This will enable the piggy-backing of
LAPB acknowledgements.
The DECNIS with MPC-1 or MPC-2 should be about 50% better than the
DEMSA in terms of packets per second, MPC-3 is approx 4 to 5 times
better than MPC-1/MPC-2.
Andrew.
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| 3569.2 | See 3561.* | ROMTSS::DESIDERI | Tue Mar 11 1997 19:50 | 13 | |
See note 3561.* perhaps you can pick up some ideas.
I had the same complain from a customer of mine, when they first tried
to replace demsa with nis500 mpc-II.
Now we are doing some test in their lab to verify the nis mpc-III
with software 4.0 as replacement of demsa.
I realized that until you let the x25 in the nis to manage the eventual
overload the nis is slow.
If you let decnet in the nis to manage the overload , the nis reacts in
a better way.
roberto
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