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20
Configuring an extended ISL
Enabling long distance when connecting to TDM devices
Use this procedure when connecting to Time-Division Multiplexing (TDM) devices and your Brocade
switch has QoS and buffer credit recovery enabled.
1. Connect to the switch and log in using an account assigned to the admin role.
2. Disable QoS.
3. Disable the credit recovery; credit recovery is not compatible with the IDLE mode. If you do not
4. Configure the port to support long-distance links.
444
Authentication: None
portDisableReason: None
portCFlags: 0x1
portFlags: 0x1
PRESENT U_PORT
portType:
17.0
portState: 2
Offline
Protocol: FC
portPhys:
2
No_Module
portScn:
0
port generation number:
portId:
010200
portIfId:
4312003b
portWwn:
20:02:00:05:1e:94:0f:00
portWwn of device(s) connected:
Distance:
static (desired = 100 Km)
portSpeed: N8Gbps
LE domain: 0
FC Fastwrite: OFF
Interrupts:
0
Unknown:
0
Lli:
0
Proc_rqrd:
5
Timed_out:
0
Rx_flushed:
0
Tx_unavail:
0
Free_buffer:
0
Overrun:
0
Suspended:
0
Parity_err:
0
2_parity_err:
0
CMI_bus_err:
0
switch:admin> portcfgqos --disable [slot/]port
If you do not disable QoS, after the second or third Link Reset (LR), ARBS display.
disable the credit recovery, it continues to perform a link reset.
switch:admin> portcfgcreditrecovery --disable [slot/]port
switch:admin> portcfglongdistance [slot/]port,LS,0,100
0
Link_failure: 0
Loss_of_sync: 0
Loss_of_sig:
3
Protocol_err: 0
Invalid_word: 0
Invalid_crc:
0
Delim_err:
0
Address_err:
0
Lr_in:
0
Lr_out:
0
Ols_in:
0
Ols_out:
0
Frjt:
0
Fbsy:
0
Fabric OS Administrator's Guide
53-1001763-02
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