Murray, You don't say what the IP address of your "router (a VM TCPIP stack that owns an external card)" is, either on the Guest LAN side or OSA card side. If it is 10.0.1.113 on the Guest LAN side, that's fine. Then we need to know what the IP address is on the OSA card, and what your VM routing looks like. We also need to know if the _real_ router on the other side of the OSA card knows to send packets for the 10.0.1.112/28 subnet to the VM TCP/IP stack or not.
Mark Post -----Original Message----- From: Murray Butler [mailto:[EMAIL PROTECTED]] Sent: Tuesday, May 28, 2002 10:17 AM To: [EMAIL PROTECTED] Subject: Routing issues on Guest LAN Hello all- I was hoping someone could stop me from banging my head on the desk any further... I have two Redhat 7.2 (2.4.9-17) guests on a guest LAN, setup by our VM SysProg, both images cannot reach outside the GLAN. I have ifconfig'd them with the proper ip, netmask and mtu, and I have set the default route in the machines to the correct ip, along with defining the dev to be used for the gateway and the netmask for the route as well (the network address was calculated from the ip and netmask, and was already correct in the routing table). I can see and exchange between the two linux boxes and everyone else on the GLAN, I can talk to the router (a VM TCPIP stack that owns an external card). One of the boxes has an initial ctc connection, if that is used as the default route interface (different subnet, different router, etc), then I can reach the GLAN interface from outside the GLAN, but the packets route back through the default interface. Here is where I am: I have re-configged the interfaces on the linux boxes at least eight times, and our poor SysProg has looked at his routing config at least as much, at one point, we did have to define his ip as able to route within the OSA card (?), but that is no longer an issue. I'm at my wits end, to my knowledge, I can only do so much to make the interfaces work on the Linux side, they are in /proc/chandev, the /etc/chandev.conf file is set, I have even echo'd the arguments in to the proc file, and I can see the devices and config them, even use them, but only on the same subnet. Whenever I try to ping out, I get a "Network is unreachable" error, and when I try to ping in, it just times out (unless the above condition of the separate default interface is there). So I am lost, the routing setup looks good, and my interfaces are set correctly, I will include output below, any ideas? -root@somehost root-# ifconfig hsi0 ifconfig hsi0 hsi0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:10.0.1.116 Mask:255.255.255.240 UP RUNNING NOARP MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) -root@somehost root-# route route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default 10.0.1.113 255.255.255.240 UG 0 0 0 hsi0 10.0.1.112 * 255.255.255.240 U 0 0 0 hsi0 127.0.0.0 * 255.0.0.0 U 0 0 0 lo Please pardon the formatting, any help is greatly appreciated, TIA, M Butler
