21 Oct
2021
21 Oct
'21
7:20 a.m.
It would be awesome to implement a "traceroute" equivalent on something :-)
I assume we'd have to allow node inspection from remote, but I'm sure people would
be open for that.
I used to run a Cisco router for my area, but replaced it with pyDECnet as I wanted to mix
both GRE and point-to-point tunnels.
pyDECnet ticked all the boxes and was simple to implement.
The one thing that I miss, however, is the simplicity of "ping decnet" in Cisco
IOS. Right from the router I could see if something was up or down.
Now I have to jump onto one of my boxes and do an ncp loop node to confirm the same.
Would be nice to have the same implemented in pyDECnet, perhaps as a command line option,
or via the web gui.
If nobody else has any equipment handy, I could setup a router again at home and do some
captures.
Cheers, Wiz!!
-----Original Message-----
From: owner-hecnet at Update.UU.SE <owner-hecnet at Update.UU.SE> On
Behalf Of John Forecast
Sent: Thursday, 21 October 2021 5:06 AM
To: hecnet at update.uu.se
Subject: Re: [HECnet] Is MIM running?
On Oct 20, 2021, at 1:58 PM, Robert Armstrong
<bob at jfcl.com> wrote:
That uses the standard mirror object (25) so it is the equivalent of
?ncp loop node? although it does allow
you to get round trip times via the ?-t? switch.
John.
>
> bob at ziti:~$ dnping legato
> Sent 10 packets, Received 10 packets
> bob at ziti:~$ dnping -v legato
> PKT: 1 WRITE: 40 READ: 40
> PKT: 2 WRITE: 40 READ: 40
> PKT: 3 WRITE: 40 READ: 40
> PKT: 4 WRITE: 40 READ: 40
> PKT: 5 WRITE: 40 READ: 40
> PKT: 6 WRITE: 40 READ: 40
> PKT: 7 WRITE: 40 READ: 40
> PKT: 8 WRITE: 40 READ: 40
> PKT: 9 WRITE: 40 READ: 40
> PKT: 10 WRITE: 40 READ: 40
> Sent 10 packets, Received 10 packets
>
> bob at ziti:~$ dnping
> Usage:
>
> dnping nodename [user pass] count
>
> *or*
>
> dnping [options] nodename
> where [options]:
> -c number number of packets to send {10}
> -d debug mode {OFF}
> -i interval interval between packets in microseconds {0}
> -p password access control password {}
> -q quiet mode {OFF}
> -s size size of frame to send in bytes {40 data + 68 hdr}
> -t timestamps mode {OFF}
> -u username access control username {}
> -v verbose mode {OFF}
> -w seconds maximum wait time (timeout)
>
>
> bob at ziti:~$ man dnping
> DNPING(1) General Commands Manual
> DNPING(1)
>
> NAME
> dnping - Loopbacks diagnostic packets through a remote node
>
> SYNOPSIS
> dnping nodename [user pass] count
> or
> dnping nodename [options] nodename
> Options:
> [qsv] [-c number] [-i interval] [-p password] [-s size] [-u
> username]
> [-w timeout]
>
> DESCRIPTION
> This utility sends to remote DECnet node nodename the number of
> packets
> specified by count to test the link between the two systems.
> Optionally
> a username and password may be specified for the connection as
> well as
> several other options. NOTE that if you dnping another Linux
> box it
> must have dnetd running.
> NOTE also that dnping is not really like an IP "ping" in that it
> needs
> a registered object at the other end to connect to. So, just
> because
> you cannot ping a machine does not, necessarily, mean that
> machine is
> not available, just that the MIRROR object is not available.
> There is
> not (to my knowledge) a low-level equivalent in DECnet of the
> ICMP ping
> message.
>
> OPTIONS
> -c number
> Number of packets to send (default 10)
>
> -d Debug mode (default off)
>
> -i interval
> interval between packets in microseconds (default 0)
>
> -p password
> Access control password. If this is "-" then you
> will be
> prompted.
>
> -q Quiet mode (default off)
>
> -s size
> size of frame to send in bytes (40 data + 68 hdr)
>
> -t timestamps mode (default off)
>
> -u username
> access control username
>
> -w timeout
> Specifies a timeout (in seconds). If not response is
> received
> after this time then dnping will abort. The default is
> to wait
> forever.
>
> -v verbose mode (default off)
>
> EXAMPLES
> Pings 10 packets through remote node "mv3100"
>
> # dnping mv3100 10
> Make it look a bit like IP ping:
>
> # dnping -vti 1000000 marsha
>
> SEE ALSO
> dntype(1), dndir(1), dndel(1), dntask(1), sethost(1), dnetd(8)
>
>
> "dnping" in Linux?
There is a dnping in Linux DECnet.