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Metro-E Site Running Slow

pcaltagirone22
Level 1
Level 1

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

2 Replies 2

Joseph W. Doherty
Hall of Fame
Hall of Fame

The interface input CRC error rate seems high, high enough to impact performance. You might first attempt to resolve that.

Thanks! I am working with the LEC to resolve now

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