Understanding Online Insertion And Removal - Cisco Catalyst 4500 Series Configuration Manual

Chapter 7 Configuring Interfaces
Table 7-4
Auto-MDIX Setting and Operational State
on an Interface
Auto-MDIX on (operational: on)
Auto-MDIX on (operational: off)
Auto-MDIX off
This example show s how to display the auto-MDIX configuration setting and its operational state on
Fast Ethernet interface 6/1:
Switch# show interfaces fastethernet 6/1
FastEthernet6/1 is up, line protocol is up (connected)
Hardware is Fast Ethernet Port, address is 0001.64fe.e5d0 (bia 0001.64fe.e5d0)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, link type is auto, media type is 10/100BaseTX
input flow-control is unsupported output flow-control is unsupported
Auto-MDIX on (operational: on)
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:16, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (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
Switch#

Understanding Online Insertion and Removal

The online insertion and removal (OIR) feature supported on the Catalyst 4500 series switch allows you
to remove and replace modules while the system is online. You can shut down the module before
removal and restart it after insertion without causing other software or interfaces to shut down.
OL-25340-01
Auto-MDIX and Operational State
reliability 255/255, txload 1/255, rxload 1/255
511 packets input, 74464 bytes, 0 no buffer
Received 511 broadcasts (511 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
3552 packets output, 269088 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
1 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Description
Auto-MDIX is enabled and is fully functioning.
Auto-MDIX is enabled on this interface but it is
not functioning. To allow auto-MDIX feature to
function properly, you must also set the interface
speed to be autonegotiated.
Auto-MDIX has been disabled with the
no mdix auto command.
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
Understanding Online Insertion and Removal
7-31