- Nav-users - lister.unit.no

Navtopology Difficulties and VLAN Bandwidth load
by William Daly - Network Specialist, VUSD Technology 30 Mai '18

30 Mai '18

Hello all, A little background: I have been running NAV 4.7.1 for quite some time now. Every time I have tried to upgrade to 4.8.4, things get a little weird. Layer 2 topologies are miss-detected and certain sites show up as completely isolated from the rest of our WAN. Netmap does not show any layer 3 topology at all. Also the IPAM tool will not allow me to enter subnets as NAV has already detected previous prefixes. So, today I decided to do a clean install of 4.8.4. I input only two sites of devices. The issue I now have is netmap does not show layer 2 topology of the two sites. I only see layer 3 of the two sites. We use HP procurve layer 3 switches. I still do not see any bandwidth loads for any given VLAN's. Is this a known issue with NAV and HP procurves? I have never been able to see bandwidth loads on any VLANs from 4.7.1 to 4.8.4. Thank you! William Daly Network Specialist Vacaville Unified School District (707) 453-6170

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Source package for NAV 4.8.4 is "missing"
by Ingeborg Hellemo 28 Mai '18

28 Mai '18

If you go to https://nav.uninett.no/releases/ and try to download NAV 4.8.4 you will get 4.8.3 --Ingeborg

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netmap and lag
by Zhi-Wei Lu 09 Mai '18

09 Mai '18

Hi NAV gurus, We have a very limited test envioronment for NAV, our environment are Foundry based (->Brocade-> Arris and Extreme now). We have enabled lldp on edge switches, but not on ALL upstream routers. Even on connections with lldp on, the map does not show LAG ports correctly, it seems. Is there a manual way to fix netmap problem for those it fails to correctly identify the connections? Thank you. Zhi-Wei Lu IET-CR-Network Operations Center University of California, Davis (530) 752-0155

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Sizing the NAV server
by Zhi-Wei Lu 09 Mai '18

09 Mai '18

Hi NAV gurus, I have been testing NAV on and off for a while with a fraction of our devices on a small VM. I like it more and more as I am getting used to it. I would like to get recommendation of a NAV setup that can handle our environment. Our network is layered like the following: Border Router: 2 Core and Area Router: ~30 Building Router: ~100 Edge Switch: ~1500 Shall we use one big server or multiple servers, physical or virtual for various NAV management components? What CPU, MEMORY, DISK IO, and DISK size shall we plan for? Thank you very much for your help. Zhi-Wei Lu IET-CR-Network Operations Center University of California, Davis (530) 752-0155

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Announcement: NAV 4.8.4 released
by Morten Brekkevold 05 Apr '18

05 Apr '18

The fourth maintenance release of the 4.8 series of NAV is now out! The source code is available for download at GitHub [1]. New packages for Debian 8/9 (Jessie/Stretch) are published in our APT repository [2], as usual. The virtual appliance will be updated shortly. Changes ======= Fixed GitHub issues: * #1638 ('array index out of range' when viewing a trunk port in PortAdmin) * #1643 (Location with active alerts - edit title) * #1650 (Submitting a threshold rule without a target crashes with a KeyError) * #1655 (Auditlog only displaying the first 100 entries in the log) + #1654 (Fix broken auditlog browsing and auditlog more things) * #1656 (Sensor widget crashes when sensor is missing) * #1660 (UninettMailDispatcher does not support non-ASCII characters and requires SMTP server on localhost) * #1661 (Business reports, link availability - want description) * #1664 (Remove bracket syntax for url parameters to Graphite) * #1665 (Interface details tries to get sensor data on empty sensorlist) * #1669 (Shouldn't use CAM to select topology for aggregated ports where LLDP is available on the physical ports) + #1685 (Do not consider CAM data from aggregator ports when there is LLDP/CDP topology available from its aggregated ports) * #1670 (Treshold editor doesn't work for metrics with hash characters in name) * #1673 (Repeated traceback e-mails for Internal Server Error: /netmap/traffic/layer2/) * #1676 (Audit log changes to API tokens) * #1677 (ipdevinfo should link to an IP Device's audit log) * #1678 (EventMixIn.get_subject() should never return a string) * #1680 (SeedDB patch editor only lists switch ports, not physical ports) Happy NAVing everyone! Links ===== [1] https://github.com/UNINETT/nav/releases [2] https://nav.uninett.no/install-instructions/#debian [3] https://github.com/UNINETT/nav/issues -- Morten Brekkevold UNINETT AS

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Traffic volume per VLAN
by cristina.caselles＠grupoversia.com 05 Apr '18

05 Apr '18

Hi, Could we have information about traffic volume per VLAN on an specific Switch? Thank you, Cristina

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Interface graphs only showing in Graphite
by soren＠fab-it.dk 05 Mar '18

05 Mar '18

Hi list In my search for the missing link, I'm looking for a clue stick as to where my interface graphs disappear. I have installed Nav version 4.8.3 on Debian Stretch and currently monitoring two HP switches, ProCurve 2810 and 2910. The problem I have is in the "ranked statistics"-page, there is no interface traffic data in the graphs - instead I get a message: "No data was found for the given timeframe. This may indicate a problem with the data collection and/or presentation. Try choosing a longer timeframe to see when the problem started." But I do get graphs if I choose the "CPU highest average" - so SNMP apparently is working fine. When I access Graphite directly on port 8000 and traverse the tree Metrics-> nav-> devices-> ip-> port-> ifinOctets I am able to see a graph for that interface. What link between Nav and Graphite am I missing? Curiously I tried the shrink wrapped image on a VirtualBox and had the opposite problem. Monitoring another Procurve 2910 I only got traffic graphs and no "CPU highest average"-graphs. Kind regards Søren Aurehøj - Fab:IT

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Re: Is that a healthy carbon cache?
by Morten Brekkevold 02 Mar '18

02 Mar '18

On Thu, 1 Mar 2018 13:12:36 +0100 Karl Gerhard <karl_gerh(a)gmx.at> wrote: > Hello Morten Hi Karl, I'm copying the mailing list on my response, even though you didn't. > here comes the requested output. secondsPerPoint looks right to me. > > $ whisper-info /var/lib/graphite/whisper/nav/devices/router1_domain_com/ports/ae3/ifInOctets.wsp > maxRetention: 51840000 > xFilesFactor: 0.5 > aggregationMethod: last > fileSize: 45568 > > Archive 0 > retention: 604800 > secondsPerPoint: 300 > points: 2016 > size: 24192 > offset: 64 [snip] It does indeed. I'm left with only two possible options: 1. You are losing UDP packets (as mentioned by the debugging guide) 2. You are in fact experiencing a cache saturation problem with carbon-cache, but it's somehow being masked by its reporting of negative cache numbers. I'd try a newer version of carbon-cache if I were you, to see if that helps. If you are indeed experiencing cache saturation, a non-buggy version might expose it properly and you can take the necessary steps - such as running multiple carbon-caches or storing your Whisper files on an SSD (although I'll add, as I've done before, that we are running carbon-cache 0.9.10 in production, as upgrading to 0.9.12 gave us abysmal performance, with cache saturation on almost every installation - so even downgrading might help). If all else fails, you should contact someone within the Graphite project. See [1] or try #graphite on Freenode. [1] https://graphiteapp.org/ -- Morten Brekkevold UNINETT

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How to add "Getting started" widget
by Ingeborg Hellemo 01 Mar '18

01 Mar '18

I seem to have removed the "Getting started with NAV" widget from det default user, and now new users miss the opportunity to take the 30 second tour. How do I add this? I can't find it in the widgets menu. --Ingeborg -- Ingeborg Østrem Hellemo -- ingeborg.hellemo(a)uit.no Dep. of Information Technology --- Univ. of Tromsø

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Is that a healthy carbon cache?
by Karl Gerhard 01 Mar '18

01 Mar '18

Hello, we're having problems with gaps in graphs (only for some interfaces) and I'm working through the https://nav.uninett.no/doc/4.8/faq/graph_gaps.html guide. I've arrived at the part with the "Carbon Cache" and I'd like to know whether those two graphs represent a healthy state: http://abload.de/img/e7zassl.png http://abload.de/img/jyz3sjf.png What strikes me as odd is that there are negative numbers, I can't see that on the graph on https://nav.uninett.no/doc/4.8/faq/graph_gaps.html Best regards Karl

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