Re: Ping drops

Router--A #sh interfaces t1/1
'Last clearing of "show interface" counters 24w6d'

can you clear the counters? to get a better idea when you run the ping
tests...

On Mon, Oct 19, 2009 at 11:27 AM, adam gibs <adamgibs7_at_gmail.com> wrote:

> Hi,
>
> Am getting CRC errors and input errors that can be for which reason??
> Router
> C is the ISP device router A and B is in my control and running MPLS in
> between them and MTU size btween them is 1524.Layer 2 trunk is configured
> between C and B and a SVI is created to cummnicate to router C.
>
> The key point i wanna tell u is if the MTU is not define while pinging
> ,,the success rate is 100%
>
> sh interface for B
>
> Router-B #sh interfaces vlan XX
> VlanXX is up, line protocol is up
> Hardware is EtherSVI, address is 001d.7198.bc00 (bia 001d.7198.bc00)
> Internet address is X.X.X.X/X
> MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
> reliability 255/255, txload 1/255, rxload 1/255
> Encapsulation ARPA, loopback not set
> Keepalive not supported
> ARP type: ARPA, ARP Timeout 04:00:00
> Last input 00:00:19, output 00:00:19, output hang never
> Last clearing of "show interface" counters 20:13:44
> 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 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> L2 Switched: ucast: 2414 pkt, 170278 bytes - mcast: 0 pkt, 0 bytes
> L3 in Switched: ucast: 55274 pkt, 9712088 bytes - mcast: 0 pkt, 0 bytes
> mcast
> L3 out Switched: ucast: 1213 pkt, 90975 bytes mcast: 0 pkt, 0 bytes
> 57688 packets input, 9882366 bytes, 0 no buffer
> Received 0 broadcasts (0 IP multicasts)
> 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
> 58935 packets output, 9776944 bytes, 0 underruns
> 0 output errors, 0 interface resets
> 0 output buffer failures, 0 output buffers swapped out
>
> sh interface on A
>
>
> Router--A #sh interfaces t1/1
> TenGigabitEthernet1/1 is up, line protocol is up (connected)
> Hardware is C6k 10000Mb 802.3, address is 001e.13e5.08c0 (bia
> 001e.13e5.08c0)
> Internet address is X.X.X.X/X
> MTU 1524 bytes, BW 10000000 Kbit, DLY 10 usec,
> reliability 255/255, txload 1/255, rxload 1/255
> Encapsulation ARPA, loopback not set
> Keepalive set (10 sec)
> Carrier delay is 0 msec
> Full-duplex, 10Gb/s
> input flow-control is off, output flow-control is off
> ARP type: ARPA, ARP Timeout 04:00:00
> Last input 00:00:00, output 00:00:02, output hang never
> Last clearing of "show interface" counters 24w6d
> 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 42000 bits/sec, 7 packets/sec
> 5 minute output rate 102000 bits/sec, 12 packets/sec
> L2 Switched: ucast: 2510607 pkt, 284517486 bytes - mcast: 5014037 pkt,
> 502588486 bytes
> L3 in Switched: ucast: 27484640 pkt, 4089035241 bytes - mcast: 0 pkt, 0
> bytes mcast
> L3 out Switched: ucast: 62961890 pkt, 56037590371 bytes mcast: 0 pkt, 0
> bytes
> 35288706 packets input, 4992780739 bytes, 0 no buffer
> Received 5293236 broadcasts (0 IP multicasts)
> 0 runts, 2411 giants, 0 throttles
> 76 input errors, 65 CRC, 11 frame, 0 overrun, 0 ignored
> 0 watchdog, 0 multicast, 0 pause input
> 0 input packets with dribble condition detected
> 73469711 packets output, 57321041866 bytes, 0 underruns
> 0 output errors, 0 collisions, 2 interface resets
> 0 babbles, 0 late collision, 0 deferred
> 0 lost carrier, 0 no carrier, 0 PAUSE output
> 0 output buffer failures, 0 output buffers swapped out
>
>
>
>
> On Mon, Oct 19, 2009 at 12:01 PM, Thameem Maranveetil Parambath <
> security.goodie_at_gmail.com> wrote:
>
> > You should get 100% success rate.. Check for sh interface command on the
> > interface connecting A and B , also B and C and see if you are getting
> any
> > errors/discards etc.
> >
> > Regards
> > Thameem
> >
> > On Mon, Oct 19, 2009 at 11:01 AM, adam gibs <adamgibs7_at_gmail.com>
> wrote:
> >
> >> friends,
> >>
> >> A----------B---------------------C
> >>
> >> when i try to ping from A to C by 1500 byte with repeat count of 10000
> the
> >> success rate is 98% and sometimes 97%.Is it something i have to go deep
> to
> >> troubleshoot or it is normal???? and what troubleshooting can i do for
> >> such
> >> situation,The MTU configured on interface is 1520.
> >>
> >> Success rate is 98 percent (986/1000), round-trip min/avg/max = 1/1/16
> ms
> >>
> >> The devices A and B is 6500 switch with negligble traffic flowing
> through
> >> it.
> >>
> >> Thanks
> >>
> >>
> >> Blogs and organic groups at http://www.ccie.net
> >>
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>
>
>
>
>
>
>

-- 
Garry L. Baker
"There is no 'patch' for stupidity." - www.sqlsecurity.com
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