I have a bit of an odd situation. At my DR site, I used to have 2 3560 switches that were port-channeled together. I recently swapped those switches out for 2 3750X switches in a stack, and copied the identical configuration on them as the original 3560 switches.
I have a 1gb WAN connection from my main site that I use mostly for my SAN replication, and with the old 3560 switches, I was able to max out that circuit and push almost a whole 1gb bandwidth. After this swap with the new 3750X switches, I can't get it to pass more than 200mb on that port. Like I said, these switches have the same config on them, so there's nothing new there. There is also no QoS either. I've checked ports for errors, and there are none and they are negotiated properly at 1000-full. I'm out of ideas on things to check, and would greatly appreciate any guidance of things I could look at.
Thanks!
drcore01-3750x#sh int gi1/0/48
GigabitEthernet1/0/48 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 6c20.564d.4ab0 (bia 6c20.564d.4ab0)
Description: cox 1gb metroE
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 2/255, rxload 49/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 142
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 195645000 bits/sec, 17395 packets/sec
5 minute output rate 11115000 bits/sec, 12417 packets/sec
317861817 packets input, 444836613365 bytes, 0 no buffer
Received 164662 broadcasts (161104 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 161104 multicast, 0 pause input
0 input packets with dribble condition detected
237971247 packets output, 40530223909 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
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
drcore01-3750x#sh run int gi1/0/48
Building configuration...
Current configuration : 190 bytes
!
interface GigabitEthernet1/0/48
description cox 1gb metroE
switchport trunk allowed vlan 1,15,501,521,920,980
switchport trunk encapsulation dot1q
switchport mode trunk
end
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 54 WS-C3750X-48 15.2(4)E6 C3750E-UNIVERSALK9-M
2 54 WS-C3750X-48 15.2(4)E6 C3750E-UNIVERSALK9-M
