CLI COMMAND

[Toukaleh79]

Dear Team ,

I'm trying to exec the  below command in  router 2811 with Cisco packet tracer v6.0.1 to enable subnet zero but could not it so please advise me.

ip subnet-zero

thanks

[Mark Malone]

Hi

most likely because its already enabled by default

run this command you will see all the full show run

show run all | i ip

As of Cisco IOS Software Release 12.0, Cisco routers now have ip subnet-zero enabled by default, but if the network engineer feels that it is unsafe to use subnet zero, the no ip subnet-zero command can be used to restrict the use of subnet zero addresses.

http://www.cisco.com/c/en/us/support/docs/ip/dynamic-address-allocation-resolution/13711-40.html

[Toukaleh79]

Hi

 accepted the ip (60.0.0.1 255.192.0.0) but its not accepting this ip (172.16.10.0/24) for vlan management . it gives bad mask error.

I can not exec this  "show run all |i ip " My Tracer put remark on word all.

[Mark Malone]

Hi

The 172 address is a subnet if your trying to put that under a vlan interface it can't end in 0 needs to be between 1-254 like 172.16.10.1 or 172.16.10.254 as example

Can you post.... show run ?

this will show what options you have  it's diff between versions/platforms sometimes

[Toukaleh79]

Hi Team

I can not exec the below 3 commands in the router 2911  in C.P.Tracer v.6.01

test(config)#cdp timer 90
                          ^
 % Invalid input detected at '^' marker.

test(config)#cdp holdtime 60
                           ^
% Invalid input detected at '^' marker.

test#terminal no editing
                      ^
% Invalid input detected at '^' marker.

please help me for this issue.
 

Regards.

[Mark Malone]

Not all commands are available on simulators like packet tracer compared to real routers , the software versions your running on PK may not support them either

[Georg Pauwen]

As Mark already said, it is enabled by default.

You don't see it in the running config, you would only see it if it is disabled. It is enabled in Packet Tracer. Try and add the following IP address to an interface:

60.0.0.1 255.192.0.0

With ip subnet-zero disabled, this would generate a bad mask error. However, the address is accepted in Packet Tracer.