Hi All :)
Someone said earlier to check settings... Have in the past ad devices
Art Bahrs, CISSP | Healthcare Information Systems Analyst/Auditor - Validation Team | Acumentra Health
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Please excuse any typos; as this was sent via my iPhone.
On Sep 30, 2015, at 8:14 AM, Craig Lalley <[log in to unmask]<mailto:[log in to unmask]>> wrote:
donna said...
regarding your tcp timers, click on the link (
http://www.allegro.com/?page_id=1391) and react accordingly ;-)
Excellent page. Thanks!
-Craig
From: Donna Hofmeister <[log in to unmask]<mailto:[log in to unmask]>>
To: [log in to unmask]<mailto:[log in to unmask]>
Sent: Wednesday, September 30, 2015 8:01 AM
Subject: Re: Firewall Setup for HP3000
On Tue, Sep 29, 2015 at 9:30 PM, Mark Ranft <[log in to unmask]<mailto:[log in to unmask]>> wrote:
TRANSMISSION CONTROL PROTOCOL (TCP) CONFIGURATION:
Checksum Enabled: Y
Maximum Number of Connections: 20000
Retransmission Interval Lower Bound (Secs): 1
Maximum Time to Wait For Remote Response (Secs): 180
Initial Retransmission Interval: 2
Maximum Number of Retransmissions: 8
Connection Assurance Interval: 60
Maximum Connection Assurance Retransmissions: 4
CONFIGURED NETWORK INTERFACES:
Network Interface Type: LAN
Network Interface Name: LAN1
Network Interface IP Address: C 192.168.001 001
IP Subnet Mask: 255.255.255.000
Network Segment Size: 1514
From the nmmgr reference manual:
This field specifies the largest packet
(including all data, protocol headers, and link level
headers) that will be sent by the LAN device. The only
reason for entering a value smaller than 1514 is to
make better use of memory for those systems where it
is known that upper layer services will always send
shorter messages. Note that whenever packets larger
than the network segment size are sent, they will be
fragmented to the network segment size, thus incurring
fragmentation overhead at the source and assembly
overhead at the destination node.
Default value: 1514 bytes
Range: 300-1514
what the above is not saying is -- for most systems setting this to
anything other than 1514 will result in abysmal network performance -- much
like a 100bt system acting like it's configured for 10bt -- because the
system is busy fragmenting packets to fit into whatever number you've got.
on mpe, the tcp headers are stored in those 14 'extra' bytes.
regarding your tcp timers, click on the link (
http://www.allegro.com/?page_id=1391) and react accordingly ;-) - d
--
Donna Hofmeister
Allegro Consultants, Inc.
408-252-2330
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