Date: Sat, 13 Jul 2002 17:33:26 +0200 From: Roelof Osinga <roelof@eboa.com> To: freebsd-questions@FreeBSD.ORG Subject: Three nics routing problem Message-ID: <3D304846.7020300@eboa.com>
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I've got a routing problem the answer to which eludes me.
The situation is as follows. The box (4.6) has three NICs:
rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 10.0.1.55 netmask 0xffffff00 broadcast 10.0.1.255
ether 00:e0:4c:39:00:32
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
ep0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 10.0.0.55 netmask 0xffffff00 broadcast 10.0.0.255
ether 00:60:97:14:31:a7
media: Ethernet 10base2/BNC
ep1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 212.187.0.39 netmask 0xfffff800 broadcast 212.187.7.255
ether 00:60:97:e4:98:db
media: Ethernet 10baseT/UTP
The ep1 connects to the CATV external connection. The ep0 to the local coax
cable and finally the rl0 to a "switchlet". The idea was to start moving to
the UTP network. However, the box fails to comply.
Diagrammatically it looks like this:
CATV <--- ep1
ep0 <---> test's ed0 as 10.0.0.10
<---> other boxes
rl0 <---> test's rl0 as 10.0.1.100
<---> other stuff
Destination Gateway Flags Refs Use Netif Expire
default 212.187.0.1 UGSc 35 338854 ep1
10/24 link#2 UC 2 0 ep0
10.0.0.2 0:0:e8:ef:7b:fb UHLW 9 87347 ep0 1139
10.0.1/24 link#1 UCc 1 0 rl0
127.0.0.1 127.0.0.1 UH 2 17851 lo0
212.187.0/21 link#3 UC 2 0 ep1
212.187.0.1 0:30:7b:94:31:c8 UHLW 29 4 ep1 1200
212.187.7.255 ff:ff:ff:ff:ff:ff UHLWb 0 5 ep1
frl:~/samba/NOTAS$ sysctl -a|grep forward
net.inet.ip.forwarding: 1
net.inet.ip.fastforwarding: 0
Even with forwarding enabled it does not forward. My workstation can connect
to 10.0.1.100 but only through the coax cable (the test box also has forwarding
enabled). When I unplug that cable it can no longer reach the test box. Which
is unfortunate.
The frl box will of course always communicate with the test box. But it will
not forward packets from the 10.0.0. net to the 10.0.1. net without resorting
to the coax net.
If someone knows what I'm overlooking, please inform!
Roelof
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