do
Command
Do
UseAllows you to access privilege level commands while in configuration modes.
Syntax
Router(config)#do <command>
Example
In the below example, the router's IP information is verified while configuring OSPF
R2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#router ospf 1
R2(config-router)#do sh ip int br | ex unass |
Interface IP-Address OK? Method Status Protocol
FastEthernet1/0.24 150.1.24.2 YES NVRAM up up
FastEthernet1/0.42 150.1.42.2 YES NVRAM up up
Loopback0 200.0.0.1 YES NVRAM up up
Loopback24 150.1.124.2 YES NVRAM up up
Loopback42 150.1.142.2 YES NVRAM up up |
R2(config-router)#
R2(config-router)#network 150.1.24.2 0.0.0.0 area 24
R2(config-router)#do sh ip route |
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
200.0.0.0/32 is subnetted, 1 subnets
C 200.0.0.1 is directly connected, Loopback0 |
Instead of using the do command, we would have had to do the following.
R2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#router ospf 1
R2(config-router)#end
R2#
R2#sh ip int br | ex unass |
Interface IP-Address OK? Method Status Protocol
FastEthernet1/0.24 150.1.24.2 YES NVRAM up up
FastEthernet1/0.42 150.1.42.2 YES NVRAM up up
Loopback0 200.0.0.1 YES NVRAM up up
Loopback24 150.1.124.2 YES NVRAM up up
Loopback42 150.1.142.2 YES NVRAM up up |
R2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#router ospf 1
R2(config-router)#network 150.1.24.2 0.0.0.0 area 24 |
Obviously this is not the most efficient method. The Do command will become one of your most used and valued command!!!
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