Re: When does a change to the TCP host table take effect?

[Jim Oberholtzer <midrangel@xxxxxxxxxxxxxxxxx>]

For a new entry yes.  If there is an existing entry that might have ARP 
cached with the old address, it could take a bit to update all the ARP 
cache entries.  IBM i updates by default every 15 minutes.   You can 
force the ARP cache to clear and have it take effect more quickly.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 10/16/2012 9:04 AM, Porterfield, Sean wrote:
> QSYS/ADDTCPHTE INTNETADR('10.99.1.101') HOSTNAME((B1))
>
> ping b1
> Verifying connection to host system B1 at address 10.99.1.101.
>
> QSYS/CHGTCPHTE INTNETADR('10.99.1.101') HOSTNAME((C1))
>
> ping c1
> Verifying connection to host system C1 at address 10.99.1.101.
> ping b1
> Unknown host, B1.
>
> QSYS/ADDTCPHTE INTNETADR('10.99.1.102') HOSTNAME((B1))
> Internet address entry 10.99.1.102 added to host table.
>
> ping b1
> Verifying connection to host system B1 at address 10.99.1.102.
>
> It's immediate, as easily demonstrated above.
> --
> Sean Porterfield
>
>
> -----Original Message-----
> From:midrange-l-bounces@xxxxxxxxxxxx  [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Gerald Kern
> Sent: Tuesday, October 16, 2012 09:47
> To: Midrange
> Subject: When does a change to the TCP host table take effect?
>
> I need to modify my host table to:
>
> 1) revise an existing entry by changing two host name values associated this IP address to two new values and;
>
> 2 ) add an entry for a new ip address and assign the two original host names previously used in step one to this new ip address.
>
> When does the change take effect? Will I need to bounce TCP ?
>
> --
> Thanks, Jerry