IPv6 Network address Can be assigned to an Interface

[abdul.qadir5001]

I have this IPv6 subnet 2402:e000:a:3:0:0:0:28/126.

Range:2402:e000:a:3:0:0:0:28 to 2402:e000:a:3:0:0:0:2b

I assigned IP 2402:e000:a:3:0:0:0:28/126 to an Interface and 2402:e000:a:3:0:0:0:29/126 to other router interface. But I was unable to Ping on P2P. But

When i changed IP 2402:e000:a:3:0:0:0:28/126 to 2402:e000:a:3:0:0:0:2a Ping was sucessfull.

It was due to the reason that 2402:e000:a:3:0:0:0:28/126 is related to Network Address or some other reason?

Kindly require your opinion. Thanks

[marce1000]

  - (nill)

 M.

[Harold Ritter]

Hi @marce1000 ,

> 2402:e000:a:3:0:0:0:2b, is the broadcast address.

There is no such thing as a broadcast address in IPv6. The last address is technically a usable address.

Regards,

[Harold Ritter]

Hi @abdul.qadir5001 ,

The first address in the IPv6 prefix is considered the subnet anycast address, as defined by RFC4291, section 2.6. You should be able to configure it and ping it although it is generally not a good idea to do so.  On IOS you should normally get a warning like the following, unless you use the "anycast" keyword while configuring the first address of the prefix:

%GigabitEthernet0/0: Warning: 2402:E000:A:3::28/126 is a Subnet Router Anycast

What type of router did you configure 2402:E000:A:3::28/126 on?

https://www.rfc-editor.org/rfc/rfc4291.html#page-12

Regards,