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Cisco ONS 15454 SONET/SDH ML-Series Multilayer Ethernet Card Software Feature and Configuration Guide, R4.0
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Chapter 4 Configuring Interfaces
Understanding Interfaces
Enter the show controller command to display information about the Fast Ethernet controller chip.
The following output from the show controller command shows statistics, including information about
initialization block information, transmit ring, receive ring, and errors:
Router#show controller fastEthernet 0
IF Name: FastEthernet0
Port Status DOWN
Send Flow Control : Disabled
Receive Flow Control : Enabled
MAC registers
CMCR : 0x0000042D (Tx Enabled, Rx Disabled)
CMPR : 0x150B0A80 (Long Frame Disabled)
FCR : 0x0000A00B (Rx Pause detection Enabled)
MII registers:
Control Register (0x0): 0x4000 (Auto negotiation disabled)
Status Register (0x1): 0x7809 (Link status Down)
PHY Identification Register 1 (0x2): 0x40
PHY Identification Register 2 (0x3): 0x61D4
Auto Neg. Advertisement Reg (0x4): 0x1E1 (Speed 100, Duplex Full)
Auto Neg. Partner Ability Reg (0x5): 0x0 (Speed 10, Duplex Half)
Auto Neg. Expansion Register (0x6): 0x4
100Base-X Aux Control Reg (0x10): 0x2000
100Base-X Aux Status Register(0x11): 0x0
100Base-X Rcv Error Counter (0x12): 0x0
100Base-X False Carr. Counter(0x13): 0x0
Enter the show run interfaces fastEthernet 0 command to display information about the configuration
of the Fast Ethernet interface. The command is useful when there are multiple interfaces and you want
to look at the configuration of a specific interface.
The following output from the show controller command includes the IP or lack of IP address and the
state of the interface:
daytona#show run interface fastEthernet 0
Building configuration...
Current configuration : 56 bytes
!
interface FastEthernet0
no ip address
shutdown
end
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