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3750-E with Equalogic SAN Latency Issues

We are having issues with our Equalogic SAN reporting Disk Latency Issues. Equalogic points to the switches which show no signs so far of any latency issue or drops. These are 3750E series switches with no routing, just switching and all data is going through one single switch so no transfers across a network.

Any ideas would be really appreciated.


Re: 3750-E with Equalogic SAN Latency Issues

Check your input/output interface buffers for drops and or overruns.



New Member

Re: 3750-E with Equalogic SAN Latency Issues


I think I have but what is the best command to use to do that? I've done the show switch diag and the show tech

any better command?


Re: 3750-E with Equalogic SAN Latency Issues

show interface command


SWITCH1#sh int t1/1

TenGigabitEthernet1/1 is up, line protocol is up (connected)

Hardware is C6k 10000Mb 802.3, address is 0022.0d04.a800 (bia 0022.0d04.a800)

Description: SWITCH3 T5/4

Internet address is

MTU 1500 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)

Full-duplex, 10Gb/s, media type is 10Gbase-LX4

input flow-control is on, output flow-control is off

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:03, output 00:00:00, output hang never

Last clearing of "show interface" counters 23:56:09

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: 92 pkt, 7291 bytes - mcast: 18639 pkt, 2199754 bytes

L3 in Switched: ucast: 17256985 pkt, 24556456241 bytes - mcast: 0 pkt, 0 bytes mcast

L3 out Switched: ucast: 7795285 pkt, 499308860 bytes mcast: 0 pkt, 0 bytes

17284423 packets input, 24560400239 bytes, 0 no buffer

Received 27270 broadcasts (0 IP multicasts)

0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 0 multicast, 0 pause input

0 input packets with dribble condition detected

7822728 packets output, 503256442 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

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