RE: Virtual Ethernet

["Evan Harris" <spanner@xxxxxxxxxx>]

Hi Scott

One of the other comments about network set up is well worth looking at. If
the FTP transfer is initiated using a name rather than an address and the
name resolves to the external address the transfer will still go "out" over
the "normal" network. If the transfer is initiated using an address you'll
also need to be sure that the address is routed over the correct VLAN
adapter.

When we wanted to use the VLAN we set up a separate name for the LPARs in
the host table so we could do the transfer by name. We also added routing
entries for the internal address to route it over the correct adapter.

You mention that you are transferring a library via FTP. You could consider
configuring anynet between the two partitions so you can use the SNA-based
commands. I've always had better results using the SAVRST commands to
transfer libraries between machines and partitions. I prefer the use of one
command and it is more efficient storage-wise. Itusually outperforms FTP
especially when you take the save and restore time for the FTP save file
into account.

Hope this helps

Regards
Evan Harris



-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Ingvaldson, Scott
Sent: Saturday, 19 January 2008 10:25 a.m.
To: midrange-l@xxxxxxxxxxxx
Subject: Virtual Ethernet

I'm trying to get virtual ethernet connectivity set up between LPARs on
a 550 here.  We need to do a daily transfer of a 60 GB library between
LPARs.

I created the resources and lines, gave them IP addresses,
(192.168.10.xxx) varied them on and got them talking.  Unfortunately it
doesn't seem any faster than it was before.

This is the LIND on both sides:

CRTLINETH LIND(VRTETH01) RSRCNAME(CMN13) ONLINE(*YES) +             
         VRYWAIT(*NOWAIT) MAXCTL(40) ADPTADR(*ADPT) +               
         EXCHID(0569D5FF) ETHSTD(*ALL) LINESPEED(1G) DUPLEX(*FULL) +
         MAXFRAME(8996) SSAP((04 1496 *SNA)(12 1496 *NONSNA)(AA +   
         8996 *NONSNA)(C8 1496 *HPR)) THRESHOLD(*OFF) +             
         GENTSTFRM(*YES) LINKSPEED(*MAX) COSTCNN(0) COSTBYTE(0) +   
         SECURITY(*NONSECURE) PRPDLY(*LAN) USRDFN1(128) +           
         USRDFN2(128) USRDFN3(128) AUTOCRTCTL(*YES) +               
         AUTODLTCTL(1440) CMNRCYLMT(2 5) MSGQ(*SYSVAL) +            
         TEXT('Virtual Ethernet')                                   

An FTP using the new interface gave me this:
59497012608 bytes transferred in 4442.494 seconds. Transfer rate
13392.705 KB/sec. 

That's 74 minutes for 60 GB, is that a reasonable speed over virtual
ethernet?  I can save it to tape faster than that.

Regards,

Scott Ingvaldson
Senior IBM Support Specialist
Fiserv Midwest