I thought I understood routing enough to set up an IRX-114 and a PM2e as a
dial-in hub. In order to test it before our leased-line is installed it
seemed a piece of cake to just use S0 on the IRX-114 to connect via PPP to
a dial-in port on one of our BSDI2.0 Digiboard ports.
And so it was. bsdi.my.net and router1.my.net talk nicely and ping in both
directions and telnet is handy to configure router1. I can also ping
pm1.my.net from router1.my.net and vice versa and telnet from pc.my.net to
either router1.my.net or pm1.my.net.
In fact, the only problem is that I can't ping from bsdi.my.net through the
S0 on router1 to either pm1.my.net or pc.my.net and I can't ping
bsdi.my.net from either the pm1 or the pc. In short, my router isn't.
I am assuming that I can "patch" the two segments of a network together
with a router through a dial in port and the bidirectional pinging of bsdi
and router1 seem to support that. So I must have something wrong in the
configuration.
+-----------------+
| internet.my.net | 198.30.158.1
+---------+-------+
|
|
+-------+-----+
| bsdi.my.net | 198.30.158.2
+-------+-----+
|
+--------+-------+ ifconfig ppp? inet 198.30.158.2
| digiboard port | 198.30.158.193 netmask 255.255.255.0
+--------+-------+
|
|
+---+---+ +---+---+
| modem +---+ modem |
+-------+ +---+---+
|
|
|
| port s0
|
+-------+--------+
set gateway 198.30.158.2 +--+ router1.my.net | 198.30.158.193
| +----------------+
|
| +----------------+
set gateway 198.30.158.193 +--+ pm1.my.net | 198.30.158.200
| +----------------+
|
| +----------------+
set gateway 198.30.158.193 +--+ pc.my.net | 198.30.158.3
+----------------+
The netmasks are all the same (255.255.255.0) and routing is on for both
pm1 and router1. Ifconfig output is reasonable but I don't understand the
routing table.
router1> show route
0.0.0.0 198.30.158.2 NS 1 ptp0
198.30.158.2 198.30.158.2 HL 1 ptp0
199.30.158.0 198.30.158.193 NL 1 ether0
pm1> show route
0.0.0.0 198.30.158.193 NS 1 ether0
198.30.158.2 198.30.158.193 HD 2 ether0
199.30.158.0 198.30.158.200 NL 1 ether0
Would appreciate a pointer to the problem area from anyone has read this
far. Moss on the north side of the tree or halo around the moon or
whatever as I have already done what I think is right.
Thanks,
Jim