Re: Ping drops

dear adam,

so your RouterA (T1/1) MTU(1524)--------(MTU?)(Int?) Router (B) (VlanX)
(Int?) ----------- Router (C)

You are getting CRC and Input error which means it can be a cable fault, Or
try to change the Speed of T1/1 to 1Gbps on Router A as RouterB can be
1Gbps ?

Check the sh interfaces of RouterB apart from int vlan.

Please reply back

Regards
Thameem

On Mon, Oct 19, 2009 at 12:43 PM, adam gibs <adamgibs7_at_gmail.com> wrote:

> Hi
>
> those are real routers
>
> thanks
>
> On Mon, Oct 19, 2009 at 12:41 PM, Iwan Hoogendoorn
<iwan_at_ipexpert.com>wrote:
>
>> Are you using dynamips or real routers?
>>
>>
>> --
>> Regards,
>>
>> Iwan Hoogendoorn
>> CCIE #13084 (R&S / Security / SP)
>> Sr. Support Engineer  IPexpert, Inc.
>> URL: http://www.IPexpert.com <http://www.ipexpert.com/>
>>
>>
>> On Mon, Oct 19, 2009 at 10:27 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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Received on Mon Oct 19 2009 - 12:59:28 ART