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Full Discussion: NIM master with multiple client subnets
Operating Systems AIX NIM master with multiple client subnets Post 302911984 by bakunin on Tuesday 5th of August 2014 04:07:15 AM
Old 08-05-2014
Quote:
Originally Posted by kaelu26
Is this something that I need to check with our network team? We currently have 4 different subnets in our AIX lpars and they can talk to each other normally.
In principle: yes. In practice the overwhelming majority of switches/routers do this (at least this is my experience) per default. I just wanted to give the rationale behind having to state the default gateway for each NIM network.

Notice that "default gateway" here means the gateway used to access the client network: suppose you have a NIM-server with IP A out of network NetA and a client with the IP B out of network NetB. The NIM network you have to create will be NetB and its "default gateway" will be the router IP in NetB, not some interface on the NIM server. For example (suppose x.1 is always the router port for network x):

Code:
NIM-Server: 10.1.1.10 SNM 255.255.255.0
Client:     10.2.2.20 SNM 255.255.255.0

NIM-Network: 10.2.2/24, Gateway: 10.2.2.1

The gateway is NOT 10.1.1.1, which would be the standard gateway for the NIM server.

Quote:
Originally Posted by kaelu26
P.S. Just joined the forums again after years of rest. I'm still trying to get the hang of using it properly.
In this case: welcome back! Use CODE-tags and you will experience the eternal friendship of the whole moderation team. ;-))

I hope this helps.

bakunin
 

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LEARN ABOUT OSF1

bootpgw

bootpgw(8)						      System Manager's Manual							bootpgw(8)

NAME

       bootpgw - Internet BOOTP Protocol gateway

SYNOPSIS

       /usr/opt/obsolete/usr/sbin/bootpgw [-d level] [-t timeout] [-h hopcount] [-w waittime] server [server...]

OPTIONS

       Sets  the  debug-level variable that controls the number of debugging messages generated.  For example, -d 4 sets the debugging level to 4.
       Sets the maximum hop count a BOOTP request can contain for this bootpgw daemon to forward the packet.  The default  is  4.   Specifies  the
       timeout	value  (in minutes) that the bootpgw process waits for a BOOTP packet before exiting.  If no packets are received for timeout min-
       utes, the program exits.  A timeout value of zero means run forever.  When the bootpgw daemon is not started using the inetd  daemon,  this
       option  is  forced  to  0.   Specifies the minimum wait time in seconds.  Requests are forwarded only if the client has been waiting for at
       least the specified time.  The default value is 0.

OPERANDS

       Specifies the name or IP address of a BOOTP server to which the bootpgw forwards BOOTP requests.

DESCRIPTION

       The bootpgw daemon implements a simple BOOTP gateway that can be used to forward requests and responses between clients and  BOOTP  servers
       (for example, bootpd) on different subnets. In order to use the bootpgw daemon, you must install the Obsolete Commands and Utilities subset
       (OSFOBSOLETExxx).

       The bootpgw can be started by the /usr/sbin/inetd daemon by specifying the following line in the /etc/inetd.conf  file:	bootps	dgram  udp
       wait root /usr/sbin/bootpgw bootpgw server

       Note that server specifies the name or IP address of a bootp server to which the bootpgw forwards bootp requests.

       You may not have the bootpd daemon and the bootpgw daemon running on the same system because they listen on the same bootps port.

       When  the  bootpgw daemon is started, it determines the address of a BOOTP server whose name is provided as a command line parameter.  When
       the bootpgw daemon receives a BOOTREQUEST packet, it sets the gateway address and hop count fields in the packet and  forwards  it  to  the
       BOOTP server at the address determined earlier.

       Then  the  bootpgw daemon looks in the /etc/services file to find the port numbers it should use.  The following two entries are extracted:
       The bootp server listening port.  The destination port used to reply to clients.  If the port numbers cannot be determined this	way,  they
       are assumed to be 67 for the server and 68 for the client.

RESTRICTIONS

       You cannot run bootpgw and bprelay on the same system at the same time.

FILES

       Defines the sockets and protocols used for Internet services.

SEE ALSO

       Commands: bootpd(8), bprelay(8), inetd(8), joind(8)

       DARPA Internet Request For Comments:

       Bootstrap Protocol (RFC 951),

       Clarifications and Extensions for the Bootstrap Protocol (RFC 1532)

																	bootpgw(8)
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