HP 3000 Manuals

Installing and Configuring HP X.400 Administrator's Guide

X.400 Links (Alternate Routes) 

An X.400 link is a route or connection between adjacent MTAs.  A link
allows the MTA to generate an alternate route between MTAs.

The following is an example of how to configure an X.400 link.  This
example assumes that the local MTA (MTAL), the two adjacent MTAs (MTA1
and MTA2), and the routes to and from the adjacent MTAs have been
configured.


            

The local MTA (MTAL) tries to send a message to MTA1 but it is returned
by the RTS as undeliverable.  If you want to deliver the message to MTA1
using an X.400 link, you must configure an X.400 link from MTA2 to MTA1.

To configure the link, do the following:

   *   From the Configure X.400 Links for Alternate Routing screen,
       select MTA2 and press the Action Menu key.

   *   Select the Add/Delete Link item

   *   From the Add/Delete Link window, enter a "y" next to MTA1.

   *   Press the Perform Task key.

The Configure X.400 Links for Alternate Routing screen should now contain
the following information:

            Adjacent MTA     Linked to MTA(s)
              MTA1
              MTA2                MTA1

Using  x4rtview, enter an O/R address that matches a route to MTA2.  The
following information displays:

                       Adjacent MTA No.          Adjacent MTA Name
                    ------------------------     ------------------
     Primary Route:           1                         MTA1
     Alternate Route:         2                         MTA2

Configuring X.400 Links 

To configure X.400 links for alternate routing,

   *   Select MTALINK from the Configure X.400 menu.

This displays the Configure X.400 Links for Alternate Routing screen 
that allows you to specify existing connections between adjacent MTAs.


NOTE  You must use a number greater than zero for the maximum connection
      retries when you configure the adjacent MTA for alternate
      routing.Do not use zero if you want to use alternate routing.  If
      you use zero, the RTS continues to retry until the maximum time to
      transfer a message is exceeded.



          Figure 8-10.  Configure X.400 Links Screen 

The fields on the screen are: 

Adjacent MTA               

                          Display.  The name of an adjacent MTA that has
                          been configured using the Configure Adjacent
                          MTAs menu.

Linked to MTA(s)           

                          Display.  A list of MTAs that the adjacent MTA
                          is linked to through an X.400 connection.  This
                          indicates that the adjacent MTA can send
                          messages directly to these MTAs.  However, it
                          does not indicate that these MTAs cannot send
                          messages directly to the adjacent MTA (unless
                          they have been configured separately to do so).

                          ______________________________________________ 

                          NOTE  When you first configure your MTA, only
                                adjacent MTAs that have been configured
                                using the Configure Adjacent MTAs menu
                                are displayed.  The Linked to MTA(s)
                                field is blank.

                          ______________________________________________ 

If you need to scroll the screento view additional adjacent MTAs,

   *   Press the Page Down key to scroll forward for additional entries,
       or

   *   Press the Page Up key to scroll to the previous screen.

If you need to scroll the screen to view additional linked to MTAs of an
adjacent MTA,

   *   Select the adjacent MTA and

   *   Press the Next Links key to scroll forward for additional entries,
       or

   *   Press the Prev Links key to scroll to the previous entries.

To add or delete a link, or to delete all links, 

   *   Press the Action Menu key to display the Action Menu so you can
       select Add/Delete Link or Delete All Links.

Adding and Deleting Links 

To add or delete a link,

   *   Select from the screen the adjacent MTA from which you want to add
       or delete a link, and

   *   Select the Add/Delete Link item from the Configure X.400 Link
       Action Menu.

This displays the Add/Delete Link window. 


          Figure 8-11.  Add/Delete Link Window 

The fields on the window are: 

Linked to MTA(s)?         Required.  Enter y to add the link to this MTA,
                          or n to delete the link.

MTA Name                   

                          Display.  This is the mnemonic name of the MTA.
                          All configured adjacent MTAs appear.

                          When adding a link from the highlighted
                          adjacent MTA to one of the listed MTAs, you are
                          indicating that the highlighted adjacent MTA
                          can send messages directly to the listed MTA
                          (the highlighted adjacent MTA is linked to the
                          listed MTA). However, this does not indicate
                          that the listed MTA can send messages directly
                          to the highlighted adjacent MTA.

                          The local MTA creates alternate routes based on
                          this information.  For example, the local MTA
                          (MTAL) has two adjacent MTAs configured:  MTA1
                          and MTA2; and MTA2 is linked to MTA1.  If a
                          message sent to MTA1 is returned to the local
                          MTA by the RTS for rerouting, then the local
                          MTA would use MTA2 as an alternate route.
                          However, if a message routed to MTA2 is
                          returned to local MTA by the RTS for rerouting,
                          the local MTA would not find an alternate route
                          because MTA1 is not linked to MTA2.  Use
                          x4rtview to see what alternate routes exist for
                          a given O/R address.

When the fields on this window are correctly defined,

   *   Press the Perform Task key.

If you need to cancel the datayou just typed,

   *   Press the Exit Task key.

Deleting All Links 

To delete all links from an MTA,

   *   Select from the screen the adjacent MTA from which you want to
       delete all links, and

   *   Select the Delete All Links item from the Configure X.400 Link
       Action Menu.

MPE/iX 5.0 Documentation