Re: Weird Nexus AD

[Tim Stevenson <tstevens () cisco com>]

am = adjacency manager. Since NXOS is a modular OS, different 
processes/services source routes to the URIB, and AM is one of them. 
OSPF, BGP, other RPs, HSRP, etc also feed their routes to the URIB.

AM really only feeds directly connected host prefixes (/32) to the 
RIB (ie, for each resolved ARP entry). These entries are not shown in 
sh ip route by default (unless you're running very old code) - I 
assume you are using sh ip route am to see these? If so, completely expected.

We can take the discussion to cisco-nsp or offline if you need more 
information.

Hope that helps,
Tim


At 09:36 PM 10/29/2010, Colby Glass uttered:

>   system:    version 4.2(2a)
>
> I've read that am = adjacency module or adjacency manager. The words mean
> less to me than why I seem to be learning this route from a phantom
> module/manager/interface with no visible explanation.
>
> I can try on c-nsp as well. Thought NANOG might be a better choice.
>
> Colby
>
> On Sat, Oct 30, 2010 at 12:04 AM, christian koch <ck () sandcastl es> wrote:
>
> > in x/y, x= preference, y= metric
> >
> > am= adjacency module, *= best unicast route
> >
> > a better place to have asked this would be c-nsp
> >
> > hth
> >
> > -ck
> >
> >
> > On Fri, Oct 29, 2010 at 7:21 PM, Colby Glass 
> <colbycciestudy () gmail com>wrote:
> >
> >> We're seeing an AD of 2 on some routes on our Nexus 7k. I can't find
> >> anything (Google) to indicate where this value is coming from. Also unable
> >> to find out what "am" mean (adjacency module?). Does anyone have an
> >> explanation for this one?
> >>
> >> *  via 192.168.21.49, Vlan13, [2/0], 00:44:52, am*
> >>
> >> Thanks
> >>
> >> --
> >> Colby Glass
> >> Network Engineer
> >> <http://blog.alwaysthenetwork.com>http://blog.alwaysthenetwork.com
> >>
> >
> >
>
>
> --
> Colby Glass
> Network Engineer
> <http://blog.alwaysthenetwork.com>http://blog.alwaysthenetwork.com




Tim Stevenson, tstevens () cisco com
Routing & Switching CCIE #5561
Distinguished Technical Marketing Engineer, Cisco Nexus 7000
Cisco - http://www.cisco.com
IP Phone: 408-526-6759
********************************************************
The contents of this message may be *Cisco Confidential*
and are intended for the specified recipients only.