1-3
Table 1-2 Description on the fields of the display ip interface command
Field Description
current state
Current physical state of the interface, which can
be
z Administrative DOWN: Indicates that the
interface is administratively down; that is, the
interface is shut down with the shutdown
command.
z DOWN: Indicates that the interface is
administratively up but its physical state is
down, which may be caused by a connection
or link failure.
z UP: Indicates that both the administrative and
physical states of the interface are up.
Line protocol current state
Current state of the network layer protocol, which
can be
z DOWN: Indicates that the protocol state of
the interface is down, which is usually
because that no IP address is assigned to the
interface.
z UP: Indicates that the protocol state of the
interface is up.
Internet Address
IP address of the interface followed by:
Primary: Identifies a primary IP address, or
Broadcast address
Directed broadcast address of the subnet
attached to the interface
The Maximum Transmit Unit
Maximum transmission unit on the interface, in
bytes
IP packets input number, bytes, multicasts
IP packets output number, bytes, multicasts
Total number of packets, bytes, and multicast
packets forwarded and received on the
interface(the statistics start at the device startup)
TTL invalid packet number
Number of TTL-invalid packets received on the
interface (the statistics start at the device
startup)
ICMP packet input number:
Echo reply:
Unreachable:
Source quench:
Routing redirect:
Echo request:
Router advert:
Router solicit:
Time exceed:
IP header bad:
Timestamp request:
Timestamp reply:
Information request:
Information reply:
Netmask request:
Netmask reply:
Unknown type:
Total number of ICMP packets received on the
interface (the statistics start at the device
startup), including the following packets:
Echo reply packet, unreachable packet, source
quench packet, routing redirect packet, Echo
request packet, router advert packet, router
solicit packet, time exceed packet, IP header bad
packet, timestamp request packet, timestamp
reply packet, information request packet,
information reply packet, netmask request
packet, netmask reply packet, and unknown
types of packets.
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