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
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: