Lan To Lan
148 Perle 833IS User Guide
it has data to send.
Routing
Information The dial in router and the 833IS need to learn about each other's network. This can
be done by:
■Using dynamic routing. The routers exchange routing information (using RIPs
for IP, or RIPs and SAPs for IPX) when they connect, and periodically refresh
their routing information when they are connected.
■Using static routing. Static routes can be defined in the 833IS. Note that routing
information can still be sent to the dial up router if static routes are defined.
If a virtual connection has been established, but the physical link has been dropped,
the link is reestablished if the 833IS receives data that it knows that it has to send to
the dial in router. It makes this decision based on the routing information that it has
for the dial in router. With dynamic routing, the learned routes are stored for 12
hours. If there is a possibility that the dial in router and the 833IS will be physically
disconnected for greater than 12 hours, you should:
■Use static routes, or
■Enable auto reconnect. This feature will force the 833IS to reconnect to the dial
in router based on the time set in the "Reconnect Every" field.
For IP, by default the 833IS will send RIP V2 with no multicasts so as to be RIP V1
compatible, and receive RIP V1 or RIP V2. This can be changed in the LAN to LAN
RIP Setup submenu. For IPX, routing information is always sent for a LAN to LAN
connection if IPX is enabled. IPX (as well as other protocols) can be disabled for the
LAN to LAN connection in the User Profile.
Note that no routing information is sent for a dial in client that is not defined as LAN
to LAN.
It is strongly recommended that the dial in router use a fixed IP address. If a
dynamic IP address is supplied (for example, from the Internal IP pool) inconsistant
behaviour could result after a physical disconnect/reconnect.
LAN to LAN
Connection Timers There are timers that affect the LAN to LAN connection behavior, if virtual
connection is not enabled:
■Inactivity Timeout
If there is no data transfer on the link for the duration set in this timer, the LAN
to LAN session drops and the physical connection drops.
Note that any routing information exchanged between the 833IS and the dial up
router will not be considered activity.