[c-nsp] DHCPv6

[Jeyamurali Sivapathasundaram]

RA is enabled by default unless you configure
IPV6 ND RA suppress


Jey S.
Network Engineer
CCIE #41608

Sent from my iPhone

On 4 Jan 2014, at 22:13, M K <gunner_200 at live.com> wrote:

 Hi
Yes , It's clear for me now , can you provide how to set the managed bit in
the RA messages?
I have configured the below
R1
int f1/0
ipv6 nd other-config-flag

And from R2 (the client) I can see that I can get the DNS and domain name
configured in the DHCP pool

R2#sh ipv6 dhcp interface fastEthernet 1/0
FastEthernet1/0 is in client mode
  State is IDLE
  List of known servers:
    Reachable via address: FE80::C800:71FF:FE4A:1C
    DUID: 00030001CA00714A0000
    Preference: 0
    Configuration parameters:
      DNS server: 1::1
      Domain name: cisco.com
  Rapid-Commit: disabled

------------------------------
Date: Sat, 4 Jan 2014 23:12:59 +0200
Subject: Re: [c-nsp] DHCPv6
From: eugen at imacandi.net
To: gunner_200 at live.com
CC: sjeyamurali at gmail.com; cisco-nsp at puck.nether.net

On Sat, Jan 4, 2014 at 10:52 PM, M K <gunner_200 at live.com> wrote:

Yes I am aware of the ND and EUI-64 methods , but i want to implement this
methodI have configured the below
R1ipv6 dhcp pool POOL address prefix 2001:192:12::/64 domain-name cisco.com
interface FastEthernet1/0 ipv6 address 2001:192:12::1/64 ipv6 dhcp server
POOL
R2interface FastEthernet1/0 ipv6 address autoconfig
R2#sh ipv6 int bri FastEthernet0/0        [administratively down/down]
 unassignedFastEthernet1/0        [up/up]    FE80::C801:71FF:FE4A:1C
 2001:192:12:0:C801:71FF:FE4A:1CFastEthernet1/1        [administratively
down/down]    unassigned
Now , I can reach this IPv6 address but the binding is not thereR1#sh ipv6
dhcp binding R1#
Even though i can also activate routing based on these addressesFrom:
sjeyamurali at gmail.com


Once you enable RA on the router all IPv6 capable clients will get an IP
address from the network you are advertising.

DHCP in the context of IPv6 (except for PD) is only used if you want to set
the client DNS automatically, but in order for the client to go to the DHCP
server you need to set the managed bit to the RA messages.

Hope this clears things a bit.