[c-nsp] Something like MTR, but forced path

[Phil Bedard]

30 seconds of google searching turned up this:  http://mteixeira.webset.net/pmping/

Phil

On Dec 18, 2007, at 9:01 PM, Tuc at T-B-O-H.NET wrote:

>>
>> Tuc at T-B-O-H.NET wrote:
>>
>>> Problem we have is a small wireless network is basically flat, not
>>> networked. There are 10 pieces of equipment between 2 machines.  
>>> However,
>>> they are both on the same subnet, so it just looks like it only  
>>> needs to
>>> hop once. Instead, it goes from the router, to a client antenna  
>>> (IP'd),
>>> to an Access Point (IP'd), to a switch (IP'd), to a backhaul  
>>> (IP'd), to
>>> another backhaul(IP'd)... You get the jist. I basically want to  
>>> force the
>>> system to believe my path, not what routed networking tells it.
>>
>> traceroute shows a layer 3 path.  Your client antenna, access point  
>> etc. are
>> bridging - a layer 2 activity.
>>
>> If you want to 'force' extra hops, you need to have each device  
>> decrement the
>> TTL of forwarded IP datagrams and correctly send ICMP unreachables.
>>
>> There is some Layer 2 traceroute functionality built in to Cisco  
>> kit, useful to
>> trace paths through a network that may change due to Spanning Tree  
>> - but I have
>> to ask, what are you trying to achieve here?
>>
> Hi,
>
> 	Sorry, I think I'm being seriously misunderstood.
>
> 	Yes, I understand l3/l2.
>
> 	I'm not looking for something that will "autodetect the path" via any
> sort of methods. I'm basically looking for something I can run on  
> Unix and
> give me a curses view of IPs I give it to ping at the same time. I  
> was looking
> on this list only because people here tend to either know or use the  
> "kewl tools".
> I found something that sort of does what I want, fping, but it  
> doesn't have the
> display part. Curses MTR bolds the lettering when it has a ping loss  
> which I want
> to catch my eye.
>
> 	As an FYI, the problem I have is I'm having connection losses  
> between my
> site and the wireless WISP's gateway. I think the packet is getting  
> to the
> backhaul link at the site here, but not to the other end of the  
> backhaul here.
> I want to run a set of pings basically that are :
>
> 1 - My router
> 2 - My antenna
> 3 - His AP at SiteC
> 4 - His switch at SiteC
> 5 - His BH at SiteC
> 6 - His BH at SiteB2C
> 7 - His switch at SiteB
> 8 - His BH at SiteB2A
> 9 - His BH at SiteA2B
> 10- His switch at SiteA
> 11- His router at SiteA
>
> 	I want something formalized since sending pings that just show
> a loss somewhere in the middle don't mean anything.
>
> 		Thanks, Tuc
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/