Hi Rick Suggestions:
1) Check your Maximum Physical Receive Packet Size (or maximum frame size) and tune it - it's a set parameter and the command is "SET MAXIMUM PHYSICAL RECEIVE PACKET SIZE = XXX", and you have to put it in the STARTUP.NCF! The normal size on Ethernet is 1514 Bytes... BUT if you are using a NIC based on Intel chipset it's different!!! You will have to use a size of 2048 Bytes... due to the fact that the driver for these NIC's requires this "overhead" to function properly! 2)If you are using some, using the words of Novell ;o), "inferior" routing equipment which are incapable of splitting the IP-packet you might get some problems on a NetWare network... there are another set command to solve this "SET ALWAYS ALLOW IP FRAGMENTATION = ON" 3) Change the MTU Size - done by Enter "SET USE SPECIFIED MTU = ON" and "SET MAXIMUM INTERFACE MTU = XXX" (the default, and the minimum, value is 576). 4) And last... tune your DSM.OPT regarding the following: TCPWINDOWSIZE & TCPBUFFSIZE Regards Flemming -----Oprindelig meddelelse----- Fra: Paul Ripke [mailto:[EMAIL PROTECTED] Sendt: 24. september 2003 00:27 Til: [EMAIL PROTECTED] Emne: Re: Very long Netware restore On Wednesday, Sep 24, 2003, at 07:43 Australia/Sydney, Kamp, Bruce wrote: > I don't the exactly what MTU means.... Basicly it is the packet size. > We > found this out after my network guys ran Sniffer on our network. The > difference in restore tmes was 2-3 days to about 10-12 hours! Your > network > people should be able to give a better definition! I colocated my > tapepool > after my first big reatore. MTU = Maximum Transmission Unit. Yes, basically it is the packet size on the wire. For normal ethernet, it has to be 1500 bytes. There is a concept known as "jumbo frames" that is supported on some gig-e infrastructure where this can be increased; not sure about 100 Mbit ethernet though. Instead, I'd be looking at the TCP window size. Our clients (no Netware) vary between 16 KB and 1.5 MB, depending on OS, age, backup types, etc. Cheers, -- Paul Ripke Unix/OpenVMS/TSM/DBA I love deadlines. I like the whooshing sound they make as they fly by. -- Douglas Adams
