Re: TCP/IP

Philip

Yes

In the reply I sent you before - not the one to which you refer here - I do
hope it got through - I quoted from the z/OS V1R8 manual, this being the
latest.

Now that you have informed us of the level of z/OS you are using I can
easily page down the different releases and pull out the V1R4 version of the
z/OS Communications Server IP System Administrator's Commands manual

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/F1A1C211 [1]

Here the equivalent text to the text I quoted before is as follows:

<quote>

| 1.37 VARY TCPIP,,PURGECACHE

| Purpose

| Use the VARY TCPIP,, PURGECACHE command to delete the ARP cache entries
| for a link or neighbor entries for an interface.

| Format

| >>__Vary __TCPIP__,__ __________
__,__PURGECache,name___________________><
| |_procname_|

| Parameters

| name

| The interface name or link name of the cache to be purged.

| If the name matches a link name, the local ARP cache or the outboard
| OSA cache entries (for QDIO token ring and QDIO ethernet) for that
| link is purged. If the name matches an interface name, the IPv6
| neighbor cache for that interface is purged.

</quote>

Note the revision bars so I guess the command is new in V1R4 - confirmed by
taking a peek at the "Summary of Changes" section of the manual.

Chris Mason

[1] Lou, you can skip the garbage after f1a1c250, in the case you used, when
providing the URL for manuals and so avoid problems with line wrapping in
the e-mail as received.

----- Original Message -----
From: "Philip Miscione" <PMiscione@xxxxxx>
Newsgroups: bit.listserv.ibm-main
To: <IBM-MAIN@xxxxxxxxxxx>
Sent: Wednesday, 31 January, 2007 4:25 PM
Subject: Re: TCP/IP


Will this work on on a z/OS 1.4 System ?

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@xxxxxxxxxxx] On
Behalf Of Lou Losee
Sent: Wednesday, January 31, 2007 10:02 AM
To: IBM-MAIN@xxxxxxxxxxx
Subject: Re: TCP/IP

Hi Phillip,
The command "vary tcpip,,purgecache" should do the trick, see:
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/f1a1c250/1.6.
7?ACTION=MATCHES&REQUEST=ARP&TYPE=FUZZY&SHELF=F1A1BK80.bks&DT=2006062216
2258&CASE=&searchTopic=TOPIC&searchText=TEXT&searchIndex=INDEX&rank=RANK
&ScrollTOP=FIRSTHIT#FIRSTHIT

Lou Losee
atsec information security

On 1/31/07, Philip Miscione <PMiscione@xxxxxx> wrote:

FYI


Is there a way I can clear the ARP cache on the TCP/ip stack on the
Mainframe without shutting down TCP/IP ?



Thanks in advance

Philip A. Miscione Sr

Project Leader

Barnes & Noble, Inc.

email: pmiscione@xxxxxx <mailto:pmiscione@xxxxxx>

Phone: 516-338-8227

Fax : 516-338-8487

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