Discovering Network Topology Post: 302414239

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Special Forums UNIX and Linux Applications Infrastructure Monitoring Discovering Network Topology Post 302414239 by sysgate on Monday 19th of April 2010 02:59:51 PM

04-19-2010

Registered User

Quote:

Originally Posted by nzeidat

Thank you sysgate for your reply.
I am not sure how this compares to the �traceroute, ping, SNMP, & DNS queries� solution you are suggesting. All these are applications on op of the network (IP) layer. Although they do similar things described in our �Client/Server� solution described above. !!!??? Any comments/thoughts??

True, they operate on IP layer, whereas your team is, apparently, rather convinced to use the transport layer for network discovery. This is an area where I can't really help with solution, hopefuly someone else will. Initially, I thought that you could do something like controlled nmap scan of your network segments, and based on results to start an application like traceroute, ping or other to verify the results and write the report somewhere , in some format, but it seems that you need more than that, so like I said, hopefully someone else will join the thread with more insight.

sysgate

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LEARN ABOUT DEBIAN

ibv_ud_pingpong

IBV_UD_PINGPONG(1)						   USER COMMANDS						IBV_UD_PINGPONG(1)

NAME

       ibv_ud_pingpong - simple InfiniBand UD transport test

SYNOPSIS

       ibv_ud_pingpong [-p port] [-d device] [-i ib port] [-s size] [-r rx depth] [-n iters] [-l sl] [-e] HOSTNAME

       ibv_ud_pingpong [-p port] [-d device] [-i ib port] [-s size] [-r rx depth] [-n iters] [-l sl] [-e]

DESCRIPTION

       Run a simple ping-pong test over InfiniBand via the unreliable datagram (UD) transport.

OPTIONS

       -p, --port=PORT
	      use TCP port PORT for initial synchronization (default 18515)

       -d, --ib-dev=DEVICE
	      use IB device DEVICE (default first device found)

       -i, --ib-port=PORT
	      use IB port PORT (default port 1)

       -s, --size=SIZE
	      ping-pong messages of size SIZE (default 2048)

       -r, --rx-depth=DEPTH
	      post DEPTH receives at a time (default 500)

       -n, --iters=ITERS
	      perform ITERS message exchanges (default 1000)

       -l, --sl=SL
	      send messages with service level SL (default 0)

       -e, --events
	      sleep while waiting for work completion events (default is to poll for completions)

SEE ALSO

       ibv_rc_pingpong(1), ibv_uc_pingpong(1), ibv_srq_pingpong(1)

AUTHORS

       Roland Dreier
	      <rolandd@cisco.com>

BUGS

       The  network  synchronization between client and server instances is weak, and does not prevent incompatible options from being used on the
       two instances.  The method used for retrieving work completions is not strictly correct, and race conditions may  cause	failures  on  some
       systems.

libibverbs							  August 30, 2005						IBV_UD_PINGPONG(1)