Configuration Guide User guide

FastIron Configuration Guide 49
53-1002494-02
Basic port parameter configuration
0 runts, 0 giants
5 packets output, 320 bytes, 0 underruns
Transmitted 0 broadcasts, 5 multicasts, 0 unicasts
0 output errors, 0 collisions
Issuing the show interface <port> command on a FSX device displays the following output:
The line highlighted in bold will resemble one of the following, depending on the configuration:
• If flow control negotiation is enabled (and a neighbor advertises “Pause-Not Capable”), the
display shows:
Flow Control is config enabled, oper disabled, negotiation enabled
• If flow control negotiation is enabled (and a neighbor advertises “Pause-Capable”), the display
shows:
Flow Control is config enabled, oper enabled, negotiation enabled
• If flow control is enabled, and flow control negotiation is disabled, the display shows:
Flow Control is config enabled, oper enabled, negotiation disabled
• If flow control is disabled, the display shows:
Flow control is config disabled, oper disabled
Symmetric flow control on FCX devices
In addition to asymmetric flow control, FCX devices support symmetric flow control, meaning they
can both receive and transmit 802.3x PAUSE frames.
By default on FCX devices, packets are dropped from the end of the queue at the egress port (tail
drop mode), when the maximum queue limit is reached. Conversely, when symmetric flow control is
enabled, packets are guaranteed delivery since they are managed at the ingress port and no
packets are dropped.
Brocade# show interface ethernet 18/1
GigabitEthernet18/1 is up, line protocol is up
Hardware is GigabitEthernet, address is 0012.f228.0600 (bia 0012.f228.0798)
Configured speed auto, actual 1Gbit, configured duplex fdx, actual fdx
Configured mdi mode AUTO, actual MDIX
Member of 4 L2 VLANs, port is tagged, port state is FORWARDING
BPDU guard is Disabled, ROOT protect is Disabled
Link Error Dampening is Disabled
STP configured to ON, priority is level0, flow control enabled
Flow Control is config enabled, oper enabled, negotiation disabled
mirror disabled, monitor disabled
Not member of any active trunks
Not member of any configured trunks
No port name
IPG MII 96 bits-time, IPG GMII 96 bits-time
IP MTU 1500 bytes, encapsulation ethernet
300 second input rate: 0 bits/sec, 0 packets/sec, 0.00% utilization
300 second output rate: 848 bits/sec, 0 packets/sec, 0.00% utilization
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 multicasts, 0 unicasts
0 input errors, 0 CRC, 0 frame, 0 ignored
0 runts, 0 giants
10251 packets output, 1526444 bytes, 0 underruns
Transmitted 1929 broadcasts, 8293 multicasts, 29 unicasts
0 output errors, 0 collisions