[cisco-bba] Cisco 7206VXR running out of steam at 20mbthroughput
Oliver Boehmer (oboehmer)
oboehmer at cisco.com
Fri May 18 03:56:37 EDT 2007
Oh, this is very strange, a NPE-G1 should cope with this load. Something
else is going on. "show align" shows anything? Any log messages?
Please unicast a show tech (will try to look at it soon)..
oli
Wayne @ CTL <mailto:Wayne at squeezemail.co.uk> wrote on Friday, May 18,
2007 9:52 AM:
> Hi Oli,
> The CPU is :-
> 7206VXR (NPE-G1) processor (revision A) with 983040K/65536K bytes of
> memory.
>
> I'm quite surprised that it can't cope, - can you advise a piece of
> kit that
> will do the job? Do you think swapping the card for a G2 would give
> us the 50-100mb we require bearing in mind the small packet size? Or
> are we better
> off with a different product?
>
> Many thanks,
>
> Wayne
>
>
> ----- Original Message -----
> From: "Oliver Boehmer (oboehmer)" <oboehmer at cisco.com>
> To: "Wayne @ CTL" <Wayne at squeezemail.co.uk>;
> <cisco-bba at puck.nether.net>
> Sent: Friday, May 18, 2007 6:49 AM
> Subject: RE: [cisco-bba] Cisco 7206VXR running out of steam at
> 20mbthroughput
>
>
> Wayne,
>
> which NPE do you use?
>
> I see that you're switching many very small packets through the box (~
> 80 byte/pkt average), which could explain the high usage with a
> moderate
> bandwidth.
> In an IMIX environment, you'd be able to switch approximately 5-8
> times
> as much (as the avg. packet size is much higher)..
>
> I guess you need a faster NPE..
>
> oli
>
>
> Wayne @ CTL <> wrote on Thursday, May 17, 2007 7:20 PM:
>
>> Hi Frank, Jason, thanks for your replies.
>> The half duplex was set for another test I have reset it to
>> full-duplex. Not sure about the implications of Vlan the subnets, and
>> I tried ip route-cache same-interface, it had no effect but I guess
>> it may take time if its a cache.
>>
>> Here are the results of the show procs and i/f:-
>>
>> Router#sh proc cpu | exc 0.00.*0.00
>> CPU utilization for five seconds: 62%/62%; one minute: 61%; five
>> minutes: 60% PID Runtime(ms) Invoked uSecs 5Sec 1Min
>> 5Min TTY Process 29 337020 111884 3012 0.00% 0.03%
>> 0.01% 0 Net Background
>>
>> 32 1613052 468318 3444 0.07% 0.20% 0.17% 0
>> Per-Second Jobs
>>
>> 123 824 120 6866 0.00% 0.02% 0.06% 0 Exec
>>
>> Router#show int f0/0
>> FastEthernet0/0 is up, line protocol is up
>> Hardware is DEC21140A, address is 0050.2aca.2400 (bia
>> 0050.2aca.2400) Internet address is 212***/30
>> MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
>> reliability 255/255, txload 63/255, rxload 64/255
>> Encapsulation ARPA, loopback not set
>> Keepalive set (10 sec)
>> Full-duplex, 100Mb/s, 100BaseTX/FX
>> ARP type: ARPA, ARP Timeout 04:00:00
>> Last input 00:00:00, output 00:00:00, output hang never
>> Last clearing of "show interface" counters 04:14:20
>> Input queue: 0/75/0/0 (size/max/drops/flushes); Total output
>> drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max)
>> 5 minute input rate 25472000 bits/sec, 40880 packets/sec
>> 5 minute output rate 24730000 bits/sec, 38624 packets/sec
>> 614086423 packets input, 1854036321 bytes
>> Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
>> 370 input errors, 0 CRC, 0 frame, 0 overrun, 370 ignored 0
>> watchdog 0 input packets with dribble condition detected
>> 568907290 packets output, 2654008434 bytes, 0 underruns
>> 0 output errors, 0 collisions, 0 interface resets
>> 0 babbles, 0 late collision, 0 deferred
>> 0 lost carrier, 0 no carrier
>> 0 output buffer failures, 0 output buffers swapped out
>>
>>
>> Router#show int f1/0
>> FastEthernet1/0 is up, line protocol is up
>> Hardware is DEC21140, address is 0050.2aca.241c (bia
>> 0050.2aca.241c) Internet address is 212.***/27
>> MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
>> reliability 253/255, txload 65/255, rxload 63/255
>> Encapsulation ARPA, loopback not set
>> Keepalive set (10 sec)
>> Full-duplex, 100Mb/s, 100BaseTX/FX
>> ARP type: ARPA, ARP Timeout 04:00:00
>> Last input 00:00:00, output 00:00:00, output hang never
>> Last clearing of "show interface" counters 04:15:01
>> Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops:
>> 56560 Queueing strategy: fifo
>> Output queue: 0/40 (size/max)
>> 5 minute input rate 24802000 bits/sec, 38766 packets/sec
>> 5 minute output rate 25523000 bits/sec, 40978 packets/sec
>> 571887898 packets input, 2950256234 bytes
>> Received 60253 broadcasts, 0 runts, 673 giants, 0 throttles
>> 9379444 input errors, 9379388 CRC, 0 frame, 0 overrun, 56
>> ignored 0 watchdog 4631020 input packets with dribble
>> condition detected 617023050 packets output, 2136329926 bytes,
>> 0 underruns 0 output errors, 9521056 collisions, 1 interface
>> resets 0 babbles, 0 late collision, 0 deferred
>> 0 lost carrier, 0 no carrier
>> 0 output buffer failures, 0 output buffers swapped out
>>
>> Thanks,
>>
>> Wayne
>>
>>
>> ----- Original Message -----
>> From: Frank Bulk
>> To: 'Wayne @ CTL' ; cisco-bba at puck.nether.net
>> Sent: Thursday, May 17, 2007 4:27 PM
>> Subject: RE: [cisco-bba] Cisco 7206VXR running out of steam at 20mb
>> throughput
>>
>>
>> Please post a copy of "sh proc cpu | exc 0.00.*0.00"
>>
>> Regards,
>>
>> Frank
>>
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