Configuring IP Protocol
106 Perle 833IS User Guide
If RIPv2 is being used, you may decide to use either Plain Text Password
authentication or Keyed Message Digest. If either of these options are selected, only
the input fields for the chosen option will be displayed. You may also choose to have
No Authentication when using RIPv2.
If you choose Plain Text Password authentication, two additional fields appear. You
must enter the password into the first field and then confirm it in the second. The
values typed into these fields are not displayed but rather asteriks are shown as keys
are typed. The password can be up to 16 characters.
If you choose Keyed Message Digest authentication, you will have a list of five (5)
keys that can be set. To set a particular key, highlight the key and press the Setup
button.
WAN Port RIP Operation operates in a similar fashion to the LAN ports, but can be
individually configured for each WAN port (see user profile - “LAN to LAN”)
Static Routes When dynamic routing is enabled, the Perle 833IS knows the structure of connected
networks (both the local network and those accessed through LAN-to-LAN
connections) by receiving RIP messages from other routers and creating an IP RIP
Table for the networks it knows about.
There is room in this table to keep entries for 600 routers. If there are more routers
than this in the networks to which your 833IS is connected (both local and LAN to
LAN), some of the RIP table entries will be overwritten and unavailable.
For most networks, there is no benefit to disabling IP dynamic routing. You may
wish to disable if:
■You have a very large local IP network
■RIP messages are not used to exchange network information. An example of this
would be an IP network that used only OSPF.
■You have a defined a dial-on-demand LAN-to-LAN connection to a router on
another network
■You have defined a LAN-to-LAN connection to a router on another network that
does not use RIP.
By defining IP static routes and disabling dynamic routing, the network
administrator can configure the Perle 833IS with the addresses of only the routers
needed to reach the desired routes and the Routing Table will not change.
The static routing feature can also be used to restrict which hosts (servers) can be
accessed from the 833IS. Note, however, that even when IP Dynamic Routing is
disabled, if a default gateway is defined, it will still be used to attempt to route
messages that cannot be routed by paths defined in the IP static routing table.