[afnog] PLZ GURUs help me here

[Bernard Wanyama]

Hi Yasini,

If I am seeing correctly, your router RTR-02 is doing 20Mbps and has a lot
of packet drops on the input queue on interface Gi0/0 - a sign of stress!

What router model is it? What are the traffic levels on the other
interfaces? Sustaining 20Mbps can be quite a challenge......

Secondly, what kind of routing exists between branch routers, RTR-01,
RTR-02, core switches and server?

Kind regards,
Bernard

On 12 October 2011 12:10, Yasini Kilima <ykilima at tra.go.tz> wrote:

>  Hello Gurus,****
>
> I have a problem on my network where access to my internal servers is very
> slow ****
>
> A ping to different hops along the WAN links is fine <less than 100ms>.
> That is I can reach my HQ router on its WAN interface at this latency, which
> is O.k to me.****
>
> But when I try to reach my servers (all of them) on the same link they
> reply with more than 700ms. I logged in on one of  the servers remotely and
> tried to ping the inside interface of the HQ router the reply was 1ms.****
>
> Now I am about going crazy because I thought perhaps there is a broadcast
> on my internal LAN but it seems not.****
>
> ** **
>
> I ran the command ‘show int summ)  on my HQ gateway router and got the
> below output RTR-02.  I tried on another router and got as shown below. This
> reveals a problem or correct me if am wrong  but am not able to exactly know
> what the problem might be. However my router runs at less than 20% CPU Usage
> and memory is fine. I can confess that my LAN is very huge on a single
> broadcast domain and we are planning to segment it the problem is management
> approval. ****
>
> ** **
>
> Now with this output can you please  help me to translate the problem from
> the show int sum output? I am stuck.****
>
> ** **
>
> RTR-02#show int summ****
>
> ** **
>
> *: interface is up****
>
> IHQ: pkts in input hold queue     IQD: pkts dropped from input queue****
>
> OHQ: pkts in output hold queue    OQD: pkts dropped from output queue****
>
> RXBS: rx rate (bits/sec)          RXPS: rx rate (pkts/sec)****
>
> TXBS: tx rate (bits/sec)          TXPS: tx rate (pkts/sec)****
>
> TRTL: throttle count****
>
> ** **
>
>   Interface              IHQ   IQD  OHQ   OQD  RXBS RXPS  TXBS TXPS TRTL**
> **
>
> ------------------------------------------------------------------------**
> **
>
> * GigabitEthernet0/0       0 1423963    0     0 20659000  5709 20531000
> 5668  3****
>
> 16885****
>
> * GigabitEthernet0/1       0     0    0    74 934000  308 955000  286    0
> ****
>
> * GigabitEthernet0/1.8     -     -    -     -     -    -     -    -   -***
> *
>
> * GigabitEthernet0/1.67    -     -    -     -     -    -     -    -   -***
> *
>
> NOTE:No separate counters are maintained for subinterfaces****
>
>      Hence Details of subinterface are not shown****
>
> ** **
>
> ** **
>
> RTR-01 #show int summ****
>
> ** **
>
> *: interface is up****
>
> IHQ: pkts in input hold queue     IQD: pkts dropped from input queue****
>
> OHQ: pkts in output hold queue    OQD: pkts dropped from output queue****
>
> RXBS: rx rate (bits/sec)          RXPS: rx rate (pkts/sec)****
>
> TXBS: tx rate (bits/sec)          TXPS: tx rate (pkts/sec)****
>
> TRTL: throttle count****
>
> ** **
>
>   Interface              IHQ   IQD  OHQ   OQD  RXBS RXPS  TXBS TXPS TRTL**
> **
>
> ------------------------------------------------------------------------**
> **
>
> * GigabitEthernet0/0       0     0    0     0 2071000  1056 7235000
> 1194    0****
>
> * GigabitEthernet0/0.2685    -     -    -     -     -    -     -    -   -*
> ***
>
> * GigabitEthernet0/1       0     1    0     0 6947000  1235 1766000
> 1075    1****
>
> NOTE:No separate counters are maintained for subinterfaces****
>
>      Hence Details of subinterface are not shown****
>
> RTR-01#****
>
> ** **
>
> ** **
>
> Yasini Kilima | Communication Engineer | Direct Line: +255 22 2119640 |
> Fax Line: | Office: 6th Floor, Mapato House | Mobile: +255 715 123754 |
> Website: http://www.tra.go.tz
> ------------------------------
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-- 
Bernard Wanyama
Technical Manager
SYNTECH ASSOCIATES Ltd
Cell: +256 712 193979
Fixed: +256 414 251591
Web: www.syntechug.com
Email: bwanyama at syntechug.com