My IP reassembly time-out is set at 10 seconds.    Changed to 90.  New route is being used almost immediately.   Should I leave at 90 change back to 10 or set at default of 120?
Chris Bipes
Director of Information Services
CrossCheck, Inc.
-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steinmetz, Paul
Sent: Thursday, March 23, 2017 8:38 AM
To: 'Midrange Systems Technical Discussion' <midrange-l@xxxxxxxxxxxx>
Subject: RE: How to clear old routes
For "learned routes" I've use the procedure below.
NETSTAT
2. Display IPv4 route information
Find route in question
CHGTCPA
Change to 90
IP reassembly time-out . . . . .   90           5-120, *SAME, *DFT
Wait 2 minutes
F5=Refresh
Route in question should be gone.
CHGTCPA
Change back to  120
IBM Incident Summary
    Document Number:   21031416
  ____________________________________________________________
  Functional Area:                       Print
  SubFunctional Area:               Network Print from iSeries
  SubSubFunctional Area:       General
  ____________________________________________________________
  Product:
  Release:  R440
  Classification:       Entitled/Advanced
  Keywords:
 ____________________________________________________________
 Document Title:ICMP Unable to PING Printer IP Address  Document Problem Summary:
  IBM(r) OS/400(r) spooled files will not print to a LAN-attached printer, because the printer's IP address cannot be PINGed successfully from OS/400(r) .
 Resolution:
  Option 2 (Display TCP/IP route information) from the Work with TCP/IP Network Status (NETSTAT) command showed that an *ICMP route destination existed with the printer's IP address.
This problem was resolved by using the Change TCP/IP Attributes (CHGTCPA) command to set the IP reassembly time-out (IPRSBTIMO) parameter to 90.
This will cause OS/400(r) to delete aged ICMP redirect routes and allow IP packets to pass through the correct interface to the printer.
 References:
  None identified.
Paul
-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Rob Berendt
Sent: Thursday, March 23, 2017 11:23 AM
To: Midrange Systems Technical Discussion
Subject: Re: How to clear old routes
Any of these help?
https://www-304.ibm.com/support/docview.wss?uid=nas8N1015699
http://www-01.ibm.com/support/docview.wss?uid=nas8N1017311
https://www.itjungle.com/2014/03/05/fhg030514-story03/
Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600 Mail to:  2505 Dekko Drive
          Garrett, IN 46738
Ship to:  Dock 108
          6928N 400E
          Kendallville, IN 46755
http://www.dekko.com
From:   Chris Bipes <chris.bipes@xxxxxxxxxxxxxxx>
To:     "'Midrange Systems Technical Discussion'" 
<midrange-l@xxxxxxxxxxxx>
Date:   03/23/2017 11:08 AM
Subject:        How to clear old routes
Sent by:        "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>
We have just installed a new faster MPLS network. I have updated all the 
default routers, adding the new routes and removing the old routes.
I still have one iSeries at V6R1 that is still using the old route.  I 
verified it is not in the local routing list, cfgtcp - Work with TCP/IP 
Routes.
So it is sending data down the old route and receiving the responses 
through the new route.  (Not the best situation.)
Anyone know how to flush the learned routing table on an iSeries at 6.1?
Chris Bipes
Director of Information Services
CrossCheck, Inc.
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