Turn off Router Advertisments

[michael.wildey]

I have got a Cisco Switch Model WS-C2960X-24PS-L with Software Version 15.0(2)EX5 here.

I tried to turn off router advertisment with the follwoing command

ipv6 nd ra lifetime 0

I also tried

ip nd ra-lifetime 0

But both versions I found on the net didn't worked. The system always told me about an invalid input,

so I tried to find out which command the system might know

ipv6 nd ra ?

And the only two answers were attach-policy and vlan

Now I am a bit confused, because everything I found was with the command above.

Could anyone help me finding the right command?

[Philip D'Ath]

I've never tried this on a 2960 - I'm not sure the 2960-X even has IPv6 forwarding capabilities.  But basically you would need something like this:

interface vlan xxx
 ipv6 nd suppress-ra

[michael.wildey]

Thank you for your answer. I tried your suggestion.

But I still see the Router Advertisment. I am not used to Cisco iOS. But for me it looks like the commands I found are not implemented in the Version we use here. Does someone know a workaround to delete the router advertisments?

[Philip D'Ath]

You can try a newer version of software.

I suspect you are right.  You are using a layer 2 switch, and this is more like layer three functionality (controlling router advertisements).

[michael.wildey]

I am going to discussed this with my colleagues.

Thank you for your response. If I will find a workaround I am going to write it down here.