peters@cc.msstate.edu (Frank W. Peters) (05/03/89)
Hello, We are having a problem with Suns Sunlink Internetwork Router product that I hope someone here can help with. Below is a drawing of the relevant systems. (Building Backbone, 130.18.64.0) ________________________________________ | |(130.13.64.7) ------------- | | (Sunlink INR link @9600bps) | Athena _________________________________________ | | | ------------- | |(130.18.160.1) | | | ---------- | | | | | ------------- | A1 |_ |(130.18.160.2) | | | | | | Corona | ---------- | | | | ------------- | (130.18.240.4)| | | --------------------------------------- (Building Backbone, 130.18.240.0) Our 130.18 network is subnetted (mask ffffff00). Athena has two ethernet interfaces as well as the ptp (point to point) link to Corona in another building off campus. All systems on our campus can get to systems on Athena's ethernet interfaces (that is, Athena will route packets between its two ethernet interfaces). In addition, all systems can get to Corona. Both Corona and Athena are Sun 4/260s running SunOS 4.0. Now, the problem. there are several subnets in the Corona building. We would like to add explicit routes to these subnets through Corona. That is, we would like to put the following explicit route in Athena: /usr/etc/route add 130.18.8.0 Corona 1 Where 130.18.8.0 is a subnet in the Corona building. The problem is that Athena treats 130.18.8.0 as a host number, not a network number. With the INR link down Athena recognizes the route as a subnet route. If we do an explicit route to a host via /usr/etc/route add 130.18.8.162 Corona 1 we can succesfully connect from athena to 8.162 so we know that the routing in the Corona building is fine (Corona's routing is much simpler since it has a default route to the ptp link). So my question is, why does Athena act subnetted when Sunlink isn't running and unsubnetted when Sunlink is up? Here are Athena's ifconfigs (with Sunlink running): athena0/lgt> ifconfig ie0 ie0: flags=63<UP,BROADCAST,NOTRAILERS,RUNNING> inet 130.18.160.1 netmask ffffff00 broadcast 130.18.160.255 athena0/lgt> ifconfig ie1 ie1: flags=63<UP,BROADCAST,NOTRAILERS,RUNNING> inet 130.18.64.7 netmask ffffff00 broadcast 130.18.64.255 athena0/lgt> ifconfig ptp0 ptp0: flags=51<UP,POINTOPOINT,RUNNING> inet 130.18.64.7 --> 130.18.240.4 netmask ffffff00 Any suggestions? Anybody successfully using Sunlink? Thanks Frank Peters | Systems & Networks Programmer | Mississippi State University | | Phone: (601) 325-2942 | Computing Center and Services | | Internet: peters@CC.MsState.Edu | Post Office Drawer CC | | BITNET: PETERS@MSSTATE.BITNET | Mississippi State, MS. 39762 |