Configuring the Interfaces
The following sections describe how to configure Gigabit interfaces and also provide examples of configuring the router interfaces:
Configuring Gigabit Ethernet Interfaces
SUMMARY STEPS
- enable
- configure terminal
- interface GigabitEthernet slot/subslot/port
- ip address ip-address mask [secondary] dhcp pool
- negotiation auto
- end
DETAILED STEPS
Command or Action | Purpose | |
---|---|---|
Step 1 |
enable Example:
|
Enables privileged EXEC mode. Enter your password if prompted. |
Step 2 |
configure terminal Example:
|
Enters global configuration mode. |
Step 3 |
interface GigabitEthernet slot/subslot/port Example:
|
Configures a GigabitEthernet interface.
|
Step 4 |
ip address ip-address mask [secondary] dhcp pool Example:
|
Assigns an IP address to the GigabitEthernet
|
Step 5 |
negotiation auto Example:
|
Selects the negotiation mode.
|
Step 6 |
end Example:
|
Ends the current configuration session and returns to privileged EXEC mode. |
Configuring the Interfaces: Example
The following example shows the interface gigabitEthernet command being used to add the interface and set the IP address. 0/0/0 is the slot/subslot/port. The ports are numbered 0 to 5.
Router# show running-config interface gigabitEthernet 0/0/0
Building configuration...
Current configuration : 71 bytes
!
interface gigabitEthernet0/0/0
no ip address
negotiation auto
end
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# interface gigabitEthernet 0/0/0
Viewing a List of All Interfaces: Example
In this example, the show platform software interface summary, show interfaces summary, and show platform software status control-process brief commands are used to display all the interfaces:
Router# show platform software interface summary
Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
-----------------------------------------------------------------------------
* GigabitEthernet0/0/0 0 0 0 0 0 0 0 0 0
* GigabitEthernet0/0/1 0 0 0 0 0 0 0 0 0
* GigabitEthernet0/0/2 0 0 0 0 0 0 0 0 0
* GigabitEthernet0/0/3 0 0 0 0 0 0 0 0 0
* Te0/0/4 0 0 0 0 0 0 0 0 0
* Te0/0/5 0 0 0 0 0 0 0 0 0
Router# show interfaces summary
*: interface is up
IHQ: pkts in input hold queue IQD: pkts dropped from input queue
OHQ: pkts in output hold queue OQD: pkts dropped from output queue
RXBS: rx rate (bits/sec) RXPS: rx rate (pkts/sec)
TXBS: tx rate (bits/sec) TXPS: tx rate (pkts/sec)
TRTL: throttle count
Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
------------------------------------------------------------------------------------------
* GigabitEthernet0/0/0 0 0 0 0 0 0 0 0 0
* GigabitEthernet0/0/1 0 0 0 0 0 0 0 0 0
* GigabitEthernet0/0/2 0 0 0 0 0 0 0 0 0
* GigabitEthernet0/0/3 0 0 0 0 0 0 0 0 0
* Te0/0/4 0 0 0 0 0 0 0 0 0
* Te0/0/5 0 0 0 0 0 0 0 0 0
Router#show platform software status control-process brief
Load Average
Slot Status 1-Min 5-Min 15-Min
RP0 Healthy 0.83 0.91 0.91
Memory (kB)
Slot Status Total Used (Pct) Free (Pct) Committed (Pct)
RP0 Healthy 7768456 2654936 (34%) 5113520 (66%) 3115212 (40%)
CPU Utilization
Slot CPU User System Nice Idle IRQ SIRQ IOwait
RP0 0 2.70 1.70 0.00 95.59 0.00 0.00 0.00
1 0.00 0.00 0.00 100.00 0.00 0.00 0.00
2 0.00 0.00 0.00 100.00 0.00 0.00 0.00
3 0.00 0.00 0.00 100.00 0.00 0.00 0.00
4 2.40 1.40 0.00 96.19 0.00 0.00 0.00
5 0.80 1.60 0.00 97.59 0.00 0.00 0.00
6 12.40 12.30 0.00 75.30 0.00 0.00 0.00
7 11.20 12.40 0.00 76.40 0.00 0.00 0.00
8 2.80 1.80 0.00 95.40 0.00 0.00 0.00
9 0.00 0.00 0.00 100.00 0.00 0.00 0.00
10 0.00 0.00 0.00 100.00 0.00 0.00 0.00
11 0.00 0.00 0.00 100.00 0.00 0.00 0.00
Viewing Information About an Interface: Example
The following example shows how to display a brief summary of an interface's IP information and status, including the virtual interface bundle information, by using the show ip interface brief command:
Router# show ip interface brief
GigabitEthernet0/0/0 10.10.3.1 YES NVRAM up up
GigabitEthernet0/0/1 192.0.5.2 YES NVRAM up up
GigabitEthernet0/0/2 192.0.2.5 YES NVRAM down down
GigabitEthernet0/0/3 unassigned YES NVRAM down down
Te0/0/4 unassigned YES NVRAM down down
Te0/0/5 10.20.4.8 YES NVRAM down down
Te0/1/0 unassigned YES NVRAM down down