Mac Addresses; Interface Port Id; Understanding The Interface Configuration; Chapter 4 Configuring Interface - Cisco ONS 15454 Software Feature And Configuration Manual

Understanding the Interface Configuration

MAC Addresses

Every port or device that connects to an Ethernet network needs a MAC address. Other devices in the
network use MAC addresses to locate specific ports in the network and to create and update routing
tables and data structures.
To find MAC addresses for a device, use the show interfaces command, as follows:
Router# sh interfaces fastEthernet 0
FastEthernet0 is up, line protocol is up
Hardware is epif_port, address is 0005.9a39.6634 (bia 0005.9a39.6634)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, Auto Speed, 100BaseTX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:18, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (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

Interface Port ID

The interface port ID designates the physical location of the interface within the ML-Series card. It is
the name that you use to identify the interface you are configuring. The system software uses interface
port IDs to control activity within the ML-Series card and to display status information. Interface port
IDs are not used by other devices in the network; they are specific to the individual ML-Series card and
its internal components and software.
The ML100T-12 port IDs for the 12 Fast Ethernet interfaces are Fast Ethernet 0 through 11. The
ML1000-2 port IDs for the two Gigabit Ethernet interfaces are Gigabit Ethernet 0 and 1. Both ML-Series
cards feature two POS ports, and the ML-Series port IDs for the two POS interfaces are POS 0 and 1.
You can use user-defined abbreviations such as f0 through f11 to configure the 12 Fast Ethernet
interfaces, gi0 or gi1 to configure the two Gigabit Ethernet interfaces, and POS0 and POS1 to configure
the two POS ports.
You can use Cisco IOS show commands to display information about any or all the interfaces of the
ML-Series card.
Do not use the g0 or g1 for a Gigabit Ethernet user-defined abbreviation. This will create an unsupported
Caution
group async interface.
Cisco ONS 15454 SONET/SDH ML-Series Multilayer Ethernet Card Software Feature and Configuration Guide, R4.0
4-2
reliability 255/255, txload 1/255, rxload 1/255
11 packets input, 704 bytes
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 11 multicast
0 input packets with dribble condition detected
3 packets output, 1056 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Chapter 4 Configuring Interfaces
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