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Today's Topics:
1. Re: Cisco Catalyst 9200 macsuck without results (Michael Butash)
--- Begin Message ---
This sounds like Cisco reformatted, or deprecated a mib, but that seems odd
(and destructive) to external tools in terms of arp or mac tables to do so
if not a bug. Those are typically pretty standard since the beginning of
time (well, everything but a stupid asa at least).
My suggestion would be to do a snmpwalk against a working and not-working
device, then compare the tables of output for differences. Should see ip,
arp, and mac data pretty clearly. Also debug netdisco collection between
working/not-working devices too for differences. Perhaps Cisco has a new
mib/format for them that needs added specifically for newer devices?
Automation and monitoring with cisco has always been terrible with
inconsistencies between platform/coode, and changes across time, as they
might as well be (and are now) 50 vendors in one that all hate each other.
So much for one neck to choke.
-mb
On Wed, Apr 8, 2020 at 2:52 AM Karel De Bruyne <[email protected]>
wrote:
> Trent,
>
>
>
> Enabling LLDP doesn’t change anything L
>
>
>
> Karel
>
>
>
> *Van:* Trent Curtis <[email protected]>
> *Verzonden:* Monday, 6 April 2020 18:46
> *Aan:* Michael Butash <[email protected]>
> *CC:* Karel De Bruyne <[email protected]>;
> [email protected]
> *Onderwerp:* Re: [Netdisco] Cisco Catalyst 9200 macsuck without results
>
>
>
> I have seen this behavior on multiple Cisco switches if LLDP is not
> running. In my instances, enabling LLDP, and re-running macsucks fixed it.
>
>
>
> - Trent
>
>
>
> On Mon, Apr 6, 2020 at 11:03 AM Michael Butash <[email protected]> wrote:
>
> I did get some varied results using netdisco against a cisco network
> recently that went as far back as 2900/3500xl up to c9410's with no
> connected devices that weren't cdp. A lot of devices didn't register on
> newer xe devices, 4k's had ios-xe / 03.07.03.E and the 9400's 16.9.3. The
> graveyard 2k/3k/6k-era stuff on !xe collected just fine.
>
>
>
> Probably cisco changing/making new mibs, ie. randomly breaking other
> things (like ND) as usual. I never did get around to debugging it much,
> but node detail would have been nice. Figure its time for a new upgraded
> nd2 appliance, but perhaps deeper issues if yours *is* a newer version.
> Mine is a few years old at least, but has served me well in a pinch over
> the years.
>
>
>
> -mb
>
>
>
>
>
> On Mon, Apr 6, 2020 at 8:03 AM Karel De Bruyne <
> [email protected]> wrote:
>
> Hi,
>
>
>
> Is it possible macsuck isn’t working for Cisco Catalyst 9200 switches?
>
> I’ve got >40 of these switches, and I can’f find the connected devices/mac
> addresses.
>
> The only connected devices I see on these switches are the ones discovered
> with CDP/LLDP, I think…
>
>
>
> I’ve compare the output of “~bin/netdisco-do macsuck -D -d <IP address>”
> with the output of other Catalysts, and it seems it can’t find the mac
> addresses
>
>
>
> Anyone a clue?
>
>
>
> Kind regards,
>
> Karel
>
>
>
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