On Tue, Oct 02, 2001 at 11:21:14AM -0400, Marshall Eubanks wrote:
Can anyone help (reciprocally would be fine) by providing permission to use ICMP Echo and HTTP GET requests against something on their network (that is well connected and reliable) so that I can build SLA-targetted averages for performance and packet loss ?
PPS If people are willing to offer this as a 'public' service, I will happily summarise back to the list and/or build a web site with details.
Peter
Dear Peter;
There is software and a program to do this.
1.) Multicast enable your network.
Good plan no matter what.
2.) Install AccessGrid / NLANR beacons : http://dast.nlanr.net/Projects/beacon/
Useful for rtt, etc..
3.) Monitor away : http://beaconserver.accessgrid.org:9999/
This doesn't solve the http://get/ part of the situation. good idea: Someone with a fast machine with reasonable memory+time to insure the scheduler is used properly could do something like the following install vmware on a host machine (www.vmware.com) set up a few 'virtual' machines, insure they can not use more than X% of the overall cpu set up rate-limit on upstream router (or similar router configuration commands) to prevent user from abusing the link. you could then install (linux|(Open|Net|Free)BSD|Win(95|98|NT|2k|me)) within the guest machine and set it up to have a seperate ip address and let people run whatever they desired. Obviously there are a few disk space, and memory as well as other resource allocation issues on the 'host' machine, but they can be resolved fairly easy. This would allow people that want to do this to offer many OS'es on a single machine. (ideally for free for people to do interesting traffic matrix things). I am going to ignore the tcpdump/packet sniffing abilities of each virtual machine to talk to each other as well as the other security aspects of this idea. obviously you want the people involved to be 'trusted' sufficently to offer these services. One could always generate some software daemons that can be connected to that perform these exact tasks also. the vmware idea is neat because you can offer access to development tools and customize rate-limits, etc on a per-IP basis and do some interesting things as far as network testing. - jared -- Jared Mauch | pgp key available via finger from jared@puck.nether.net clue++; | http://puck.nether.net/~jared/ My statements are only mine.