[c-nsp] Best practice - Core vs Access Router

Andy B. globichen at gmail.com
Wed Feb 10 14:04:51 EST 2010

By the way,

I am using Cacti to pull out data from all my routers.

Here is what cacti is reporting when the router is behaving like now:

02/10/2010 07:39:12 PM - SPINE: Poller[0] Host[4] DS[594] WARNING:
SNMP timeout detected [500 ms], ignoring host 'x.x.4.131'

The cacti server is in a dedicated 'NOC vlan' right next to the core,
not on any of these OSPF/BGP interfaces.


On Wed, Feb 10, 2010 at 8:00 PM, Andy B. <globichen at gmail.com> wrote:
> On Wed, Feb 10, 2010 at 7:48 PM, David Freedman
> <david.freedman at uk.clara.net> wrote:
>> So, are you checking your interfaces for incrementing drop/error counters?
>> Are you seeing any of this when there is the problem occuring?
>> (clear counters , sh int summ etc..)
> I am having input drops all the time, no matter how high or low I set
> the incoming hold-queue.
> The OSPF and IBGP interfaces approx. 30 minutes after I cleared the counters:
> TenGigabitEthernet8/1 is up, line protocol is up (connected)
>  Input queue: 0/2000/622/622 (size/max/drops/flushes); Total output drops: 0
> TenGigabitEthernet9/1 is up, line protocol is up (connected)
>  Input queue: 0/4096/1664/1664 (size/max/drops/flushes); Total output drops: 0
> TenGigabitEthernet9/2 is up, line protocol is up (connected)
>  Input queue: 0/4096/1916/1916 (size/max/drops/flushes); Total output drops: 0
> These links are not congested! Te9/1 is the busiest with maybe 6.5 out
> of 10 Gig. The other two are below 5 Gig.

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