(PM) MTU size?

Jeff Woods (jwoods@delta.com)
Tue, 30 Jun 1998 15:00:04 -0400

Several of the magazine rags (PCWorld, etc) have been recommending users to
drop their MTU's to 576 bytes for a significant speedup. I've tried this
on a modem connection, and by george if it doesn't work. Should we
consider dropping the NAS-side MTU on async connections to 576 as well, and
if we did, what negative repercussions would there be?

FWIW, Microsoft has made 576 the default MTU in Win98 now, too,
acknowledging that it made a mistake in selecting 1500 for its Winsock....

Comments?

At 01:25 PM 6/30/98 -0500, you wrote:
>From: Jorg B. [mailto:jorg_b@cwo.com]
>Sent: Tuesday, June 30, 1998 12:46 PM
>> Is there a way to restrict ISDN connections based on user names ?
>> For example: User name tom is allowed to establish a ISDN
>> connection but
>> user name peter can only connect using a "non ISDN" modem.
>> PM3 (PRI connected)
>
>In /etc/raddb/users (assuming /etc/passwd is used for authentication),
>use something like this:
>
>AsyncUser Auth-Type = System, NAS-Port-Type = Async
> Service-Type = Framed-User,
> Framed-Protocol = PPP,
> Framed-Address = 255.255.255.254,
> Framed-Netmask = 255.255.255.255,
> Framed-MTU = 1500
>
>64kISDNUser Auth-Type = System
> Service-Type = Framed-User,
> Framed-Protocol = PPP,
> Framed-Address = 255.255.255.254,
> Framed-Netmask = 255.255.255.255,
> Framed-MTU = 1500
> Port-Limit = 1
>
>128kISDNUser Auth-Type = System
> Service-Type = Framed-User,
> Framed-Protocol = PPP,
> Framed-Address = 255.255.255.254,
> Framed-Netmask = 255.255.255.255,
> Framed-MTU = 1500
> Port-Limit = 2
>
>Hope this helps...
>
>--Kevin
>
>Kevin Sawyer - President/CEO - sawyerk@apci.net
>Applied Personal Computing, Inc. - APCiNet - http://www.apci.net
>6001 Old Collinsville Road, Building #3, Fairview Heights, IL 62208
>Office: (618) 632-7282 FAX: (618) 632-7287 Support: (618) 628-2Net
>
>
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