Determining Whether a Remote AppleTalk Router Is Reachable

To determine whether a remote router is reachable, you can run an Echo test. To run an Echo test, load ATCON and perform the following steps:

1. From the Available Actions window, select Lookup Network Entities.

2. In the Name field, type the name of the router you want to reach.

   To find all services, leave the default value (=).

3. In the Type field, select NetWare Router.

   Press Enter to get a list of Name Binding Protocol (NBP) types from which you can select. If NetWare Router is not in the list, press Insert to add it to the list.

4. In the Zone field, select the name of the zone in which the remote router resides.

   Press Enter to get a list of zones from which you can select.

5. Select Perform Lookup and press Enter .

   The Network Entities Found window appears.

   Wait at least 30 seconds for the link to be established and routes to be exchanged, then perform the lookup again. Do not wait for routers to be exchanged for destinations connected by an on-demand link. Also, be aware that performing the lookup for destinations connected by an on-demand link will generate packets to the destination and will bring up the link.

6. Select the router you want to reach.

   The Edit Echo Parameters and Execute Test window appears.

7. Edit the Echo parameters.

   You can edit the following parameters:

   • Mode---Choose Send Specified Number of Packets to send only the number of packets specified in the Number of Packets to Send field. Choose Send Continuously to send packets until you press Esc to stop the Echo test.
   • Number of Packets to Send---Determines the number of echo requests to be sent to the remote router.
   • Timeout---Determines the amount of time to wait for an echo reply from the remote router. If the reply is returned before the timeout is over, the next echo request is sent. If the reply does not come back, an echo request is sent after the timeout is over.
   • Number of Data Bytes---Specifies the size of the echo request packet.

8. Select Perform Echo and press Enter .

   The Sending Echo Packets window appears. The window shows the progress of the Echo test.