yurkon@CYCVAX.NSCL.MSU.EDU (06/21/91)
My administrator noticed that he was getting ARP requests from my node. He ask me to change the IP broadcast id to 35.8.0.0. I originally had it se to 35.8.32.0. After changing it and rebooting the system, he said that the problem was still there. That is, he still sees ARP requests for address 35.8.0.0. Anyone have a similiar problem? Also, which program actually reads inet.config? The manual states that the start-inet script uses it, but it doesn't. At least not directly. Is it ifconfig? John
kent@swrinde.nde.swri.edu (Kent D. Polk) (06/28/91)
In article <1991Jun21.160053.19598@msuinfo.cl.msu.edu> yurkon@CYCVAX.NSCL.MSU.EDU writes: >My administrator noticed that he was getting ARP requests from my node. He >ask me to change the IP broadcast id to 35.8.0.0. I originally had it se >to 35.8.32.0. After changing it and rebooting the system, he said that the >problem was still there. That is, he still sees ARP requests for address >35.8.0.0. Anyone have a similiar problem? It appears that all of the AS225/A2065's generate these spurious ARP requests. I also tried changing the IP broadcast id to XX.XX.0.0. and a couple of other things, but nothing affected it. The only other box that appears to generate these types of ARP requests is the gateway box, which periodically goes around polling all the machines connected to it. I heard a rumor that went something like this: 1) the hardware (firmware) was based on a previous spec for tcp/ip. 2) it is periodically sending the ARP request which never gets satisfied since the current implementation for tcp/ip doesn't support that request any more (or maybe the way it is being requested). If anyone knows more about this, or what I should be looking for to further analyze the situation (we have a network analyzer avaliable), I sure would appreciate the information. Has anyone noticed if the Amiga UX boxes have this same problem? (i.e., is it the AS225 software or the board which is causing this behavior?) Thanks, Kent Polk: Southwest Research Institute (512) 522-2882 Internet : kent@swrinde.nde.swri.edu UUCP : $ {cs.utexas.edu, gatech!petro, sun!texsun}!swrinde!kent
martin@cbmvax.commodore.com (Martin Hunt) (06/28/91)
In article <3656@swrinde.nde.swri.edu> kent@swrinde.nde.swri.edu (Kent D. Polk) writes: >In article <1991Jun21.160053.19598@msuinfo.cl.msu.edu> yurkon@CYCVAX.NSCL.MSU.EDU writes: >>My administrator noticed that he was getting ARP requests from my node. He >>ask me to change the IP broadcast id to 35.8.0.0. I originally had it se >>to 35.8.32.0. After changing it and rebooting the system, he said that the >>problem was still there. That is, he still sees ARP requests for address >>35.8.0.0. Anyone have a similiar problem? > >It appears that all of the AS225/A2065's generate these spurious ARP >requests. I also tried changing the IP broadcast id to XX.XX.0.0. and a >couple of other things, but nothing affected it. The only other box >that appears to generate these types of ARP requests is the gateway >box, which periodically goes around polling all the machines connected >to it. The problem is that the released ifconfig is broken. In the start-inet script there is a line like this: ifconfig ae0 $hostname -trailers This is supposed to read in the inet.config file and set up the ethernet interface "ae0". Unfortunately, it doesn't work with class A or B netmasks or broadcasts. To work around this, insert a line like this after the previous line: ifconfig ae0 netmask 255.255.0.0 broadcast 17.7.255.255 (make sure you use the proper netmask and broadcast values for your network) To check the current settings, you can always do a "ifconfig ae0". > >I heard a rumor that went something like this: > >1) the hardware (firmware) was based on a previous spec for tcp/ip. Hardware has nothing to do with TCP/IP. This is like saying that the Amiga hardware is based on a previous ANSI C spec. > >2) it is periodically sending the ARP request which never gets >satisfied since the current implementation for tcp/ip doesn't support >that request any more (or maybe the way it is being requested). > >If anyone knows more about this, or what I should be looking for to >further analyze the situation (we have a network analyzer avaliable), >I sure would appreciate the information. > >Has anyone noticed if the Amiga UX boxes have this same problem? (i.e., >is it the AS225 software or the board which is causing this behavior?) > The A2065 cards are just dumb ethernet cards and are incapable of doing an ARP by themselves. I think the entire problem is just the configuration problem I mentioned above. >Thanks, >Kent Polk: Southwest Research Institute (512) 522-2882 >Internet : kent@swrinde.nde.swri.edu >UUCP : $ {cs.utexas.edu, gatech!petro, sun!texsun}!swrinde!kent Martin Hunt Networking Division Commodore-Amiga Siberia Office martin@cbmvax.commodore.com