07-21-2009 07:31 AM - edited 03-04-2019 05:30 AM
All,
I have one particular site over our Metro-E (one of many) that users are complaining is really slow - i can see that the physical Metro interface at the remote site is showing about a 4-5% rate of interface errors and CRCs which is usually speed/duplex issue (we have been hard set to 100/Full for as long as can remember). However on the Vlan interface for the Metro I am seeing a large amount of IP Multicast packets so i assume I have a multicasting issue at the site. I am more of a voice/WLAN guy so any tips on how to troubleshoot and/or resolve would be appreciated - the interface summaries are below. I cleared the counters about 10 minutes ago
Metro VLAN show int
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
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 00:20:16
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 2000 bits/sec, 3 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
4718 packets input, 332465 bytes, 0 no buffer
Received 0 broadcasts (2105 IP multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
1747 packets output, 316817 bytes, 0 underruns
0 output errors, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
Physical Metro interface show int
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
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 00:20:23
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 188000 bits/sec, 41 packets/sec
5 minute output rate 53000 bits/sec, 33 packets/sec
57837 packets input, 33295924 bytes, 0 no buffer
Received 4986 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
181 input errors, 181 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 4986 multicast, 0 pause input
0 input packets with dribble condition detected
48971 packets output, 11415604 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 PAUSE output
0 output buffer failures, 0 output buffers swapped out
07-21-2009 10:11 AM
The interface input CRC error rate seems high, high enough to impact performance. You might first attempt to resolve that.
07-22-2009 06:58 AM
Thanks! I am working with the LEC to resolve now
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