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Topics - rickli

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News / NeDi 1.0.6 Public Beta
« on: December 05, 2010, 09:47:05 PM »
Here it is! After way too much delay, but please keep in mind it's beta thus not thoroughly tested! Expect to see many warnings, but that's just because I turned them on in Perl. The config file should explain the most important things and perldoc is supported as well...

The current version can be found at http://www.nedi.ch/files:download (number is the day of year)

Post feedback in this thread during beta phase...

Good luck  ;)

General Topics / Firefox following ssh:// & telnet:// links
« on: April 14, 2010, 09:52:30 PM »
This issue seems to keep coming back like a fat fly, when you're about to doze off...

Solutions which allegedly used to work fail with my Ubuntu Lucid system, so I decided to tackle this issue again. I'm sure there's a more elegant approach, but I just needed a quick fix for developing NeDi more efficiently :)

In about:config create those booleans:


Create a script cli.sh:

case "$1" in
   xterm -e telnet `echo $1 | sed -e "s/telnet:\/\///"`
      xterm -e ./ssh.sh `echo $1 | sed -e "s/ssh:\/\///"`

and ssh.sh (clumsy, I know):

echo -n "username:"
read name
ssh -l $name $1

chmod both to 755

First time you click on a telnet:// or ssh:// link you'll be prompted for a program. Browse for cli.sh for both...

News / NeDi 1.0.6 Progress
« on: January 16, 2010, 12:15:36 AM »
I just achieved a milestone in NeDi's SSH support. Further development is going to keep me busy for a while, so I hope the community will help those, who experience problems with the current version. Check out this thread for development progress. I'll also put up some news on the homepage now and then...

  • nosnmpdev now honours border (to avoid phones showing up as devices). Added support for Aastra phones.
  • SNMP support for Alcatel switches confirmed. CLI support under investigation.
  • Config backup for ProCurve switches working now
  • New CLI library supports Enterasys and Extreme devices. Much better SSH using io::pty and openssh.
  • Fixed bug for TopRRDs http://forum.nedi.ch/index.php?topic=618.msg2747#msg2747
  • Experimented with gammu and a mobile phone for sending SMSs. Looking good so far!
  • Tables can be optimized from Other-Export now. This is handy when NeDi slows down with large tables (I'd still keep messages under a million, though)
  • GUI enhancements: Printout feature added, reports can be filtered with certain criterias
  • Stale discovery threads and nodelocks will be taken care of (based on OXO's suggestion)
  • Optimized monitoring (e.g. no (had some issues with latency calculation) Less bursty polls), many GUI improvements
  • Redesigning monitoring! Nodes can be added for service checks as well now!
  • New SNMP library in progress...(working, write access still WIP), improved GUI SNMP in the meantime
  • Added LWP support for Aastra phones
  • Added CDP detection for vSwitches (see attached). Now the topology extends beyond virtualisation!
  • Improved IF metrics
  • Improving Device-Writer. Probably bringing back CatOS support for BridgeFWD via CLI
  • -I option replaced with setting in nedi.conf, which lets you choose IF IP by device type

General Topics / USB Serial on Windows
« on: December 02, 2009, 12:59:28 PM »
If you are (like me) forced to use Windows on one of those new notebooks without a proper Serial Port, you probably want this batch file (yes, I do those too once in a while) sitting on your desktop:

Code: [Select]
type com.txt
del com.txt

Replace more with putty, if you're as lazy as I am  ;)

NeDiO / NeDiO45
« on: November 19, 2009, 06:28:15 PM »
Will be ready with 1oh5 final well. Besides OpenBSD 4.6 it'll also feature a rewritten set of System Modules to edit config files, run nedi itself and properly control the daemons. This greatly improves the "appliance" experience! BTW Putty will be on there as well, from now on...

News / Release Candidate Poll
« on: November 18, 2009, 07:14:56 PM »
Please let me know, if you're testing NeDi 1.0.5-RC3 with that I know how close to the final release we are...

WAN/Routing / MPLS with flat L2 backbone
« on: November 15, 2009, 05:00:01 PM »
The usual approach is probably LDP in an MPLS core. One alternative could be to use a flat L2 network and something like spanning-tree in the core instead. Is anyone using such a setup? What's your experience. Ever had issues? Again I'm just curious, as to what's out there...

LAN/Switching / Trill
« on: November 15, 2009, 04:57:17 PM »
Is anyone using trill already. I'm just curious and would like to see people sharing their experience...

Management / SNMP v3 Support
« on: September 04, 2009, 07:12:44 PM »
Even though this forum doesn't have to be NeDi related I want to use this thread to gather ideas on how to implement SNMP v3. Here's what I concluded so far:

Only write access should be using v3, in order to preserve resources. In other words, why should IF statistics or even worse uptime monitoring be encrypted? This will require a new approach in determing a device's capabilities (e.g. try v3 first then also find a v2 readonly community).

News / NeDi 1.0.5
« on: August 26, 2009, 06:56:39 PM »
I'm working on getting various suggestions and ideas inline. Here's an update on the progress:

  • Fixed option handling, especially for the DB initialization. RRDs & config files will no be deleted too!
  • Improved Gbic/SFP handling (for devs that support their SN readout)
  • Minor fixes in -r and -A discovery
  • Detection of duplicate IP addresses on devices (experimental since I haven't tested this with VRRP,HSRP etc.)
  • Links are written per device now. I got rid of MAC and OUI based link creation as it never worked reliably anyway. This is another step towards multi threaded discovery. The last hurdle are the nodes now! On that note, I lowered IF metric of trunks/channels with that they'll be preferred over router- and uplinks. This means you fat servers should appear on the right interface...
  • Link changes (based on discovery protocol or static ones created with linked) are detected now
  • VRF info collected during discovery.
  • OS detection (using nmap) for the nodes
  • SNMP version can be added as 3 argument in the seedlist now
  • Locking mechanism for nodes to avoid problems with parallel discoveries

  • The global msgregexp has been replaced in favor of a per device filter and is stored in DB as msginfo
  • Experimental delay measuring with uptime polling (if this is reliable, it could be extended for jitter monitoring)
  • Option to graph broadcasts on certain devices (e.g. user routers). For 5 min graphs Cacti would still be the choice, though

  • Message list is a function now, which can be used in various modules
  • Enhanced Devices-Config to show size of config and changes and recent backup errors and changes as default.
  • Ignore WLAN errors in Report-Interfaces
  • Several GUI optimizations (such as cosmetic changes and additional links between modules)
  • It's now possible to truncate whole tables from the Export module
  • Devices-Graph now can also do a Nodes graph
  • RRDs are overhauled and now support language settings. Let me know if you notice any performance impact!
  • Devices-Stock allows for tracking source (distributor of device)
  • Other-Export can be used for any queries (hence should be kept in adm group!)
  • Topology Multicast now has some support for HP ProCurve IGMP Queriers
  • Topology Map got a new flat mode, which doesn't rely on snmp location. Example http://www.nedi.ch/_detail/gallery:frankmpls.png?id=gallery%3Agallery
  • Much better VRF support in Topology-Routes and Device-Status
  • New module Devices-Networks with VRF support has arrived!
  • Included some suggestions from this thread: http://forum.nedi.ch/index.php?topic=533.0
  • Reworked the system tools for easy maintenance. This required a merge of rrdpath and cfgpath to nedipath. A nice side effect, there are no more references to /var or any other fixed path anymore.
  • Included contributions like regexp search on IP  addresses, direct link to Device Status from Nodes List and quite a few other imrovements
  • Added a chat module based on the great idea of my former teammates! (Adapted some icons for experience sake, but you should get used to it quickly)
  • Revised graph coloring and made it more robust. Menu included in themes and created a new one too...

NeDiO / NeDiO mysqld logging
« on: August 21, 2009, 03:48:16 PM »
With the default logging enabled, mysqld creates a file /var/mysql/og. This one can grow to a ridiculous size filling up your whole HD!

remove -log option in /etc/rc.local for mysqld_safe in order to fix it...

News / Announcements
« on: June 07, 2009, 01:11:10 PM »
We got some attention in networkworld  ;D Thanks to adhendb for pointing it out...


Database / Optimization
« on: May 01, 2009, 01:39:02 PM »
Getting annoyed with the ever becoming slower messages table, while collecting tons of useless events I looked at optimization strategies. An interesting one is:

ALTER TABLE messages ADD INDEX(time);

Just look at Monitoring-Timeline past line above via mysql then do it again...

This one could be helpful too, but the statistics on Monitoring-Health are still way too slow:

ALTER TABLE messages ADD INDEX(level);

I've been using this for analyzing BTW:
explain SELECT level,count(level) FROM messages GROUP BY level ORDER BY level;

I only don't understand why ORDER BY level desc is much slower than ORDER BY level  ???
Hmm, Rauchi if you still have that book I probably should look into it  ;)

News / Registering Here
« on: April 25, 2009, 11:09:28 PM »
For all the newcomers here: Thanks to the Spammers, each registration will be reviewed prior authorization. Please don't use freemail accounts and unpronounceable names. We are a quite serious networking community here, hence you won't have to worry about any side effects when using even your work email address. This will make my life easier, leaving more time to further develop NeDi...

NeDiO / NeDiO44
« on: April 11, 2009, 09:48:01 PM »
NeDi & OpenBSD are back. The best part, it's even smaller than the last one! Unfortunately it's still too big to host here (80 Mb), so I'm seeding it via torrent. I'd appreciate more seeders or even some bandwidth, if you have any to spare...

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