Cisco MDS 9000 Series Configuration Manual page 112

Configuring FEC
Enters configuration mode.
Step 2
switch(config)# interface fc 1/1
Selects the interface and enters interface configuration submode.
Step 3
switch(config-if)# switchport speed 16000
Sets the port speed to 16 Gbps.
Step 4 switch(config-if)# switchport fec
Note The switchport fec command works only in fixed 16-Gbps speed and a message stating the same appears
when you execute this command.
Enables FEC for the 16-Gbps interface.
• FEC is active if it is configured on both local and peer switches.
• FEC is not active if it is configured only on the local switch, but not on the peer switch.
Step 5 switch(config-if)# switchport fec tts
(Optional) Enables TTS, that allows negotiation of FEC. This command is only accepted on ports with fixed 16-Gbps
speed and FEC enabled.
Note The switchport fec tts command can be used only after configuring FEC using the switchport fec command.
Use the show interface command to verify the port speed configuration for an interface on the 48-port, 16-Gbps Fibre
Channel switching module.
switch# show interface fc3/15
fc3/15 is up
Hardware is Fibre Channel, SFP is short wave laser w/o OFC (SN)
Port WWN is 20:8f:54:7f:ee:ea:3a:00
Admin port mode is auto, trunk mode is off
snmp link state traps are enabled
Port mode is F, FCID is 0xdf0000
Port vsan is 100
Speed is 2 Gbps
Rate mode is dedicated
Transmit B2B Credit is 128
Receive B2B Credit is 32
Receive data field Size is 2112
Beacon is turned off
admin fec state is down
oper fec state is down
5 minutes input rate 0 bits/sec,0 bytes/sec, 0 frames/sec
5 minutes output rate 0 bits/sec,0 bytes/sec, 0 frames/sec
16072969258 frames input,34396153854332 bytes
23 discards,45 errors
22 invalid CRC/FCS,0 unknown class
0 too long,0 too short
8040504998 frames output,17206679580576 bytes
1344 discards,0 errors
0 input OLS,0
306 output OLS,304 LRR, 1 NOS, 4 loop inits
32 receive B2B credit remaining
128 transmit B2B credit remaining
128 low priority transmit B2B credit remaining
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x
94
LRR,0 NOS,0 loop inits
Configuring Fibre Channel Interfaces