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ASK THE EXPERTS : IPv6

ciscomoderator
Community Manager
Community Manager

with Salman Asadullah

Welcome to the Cisco Networking Professionals Ask the Expert conversation. This is an opportunity to get an update on how to enable your network to run IPv6 with Cisco expert Salman Asadullah. Salman is a Distinguished Engineer at Cisco and a Fellow of the IPv6 forum. Salman represents Cisco in industry panel discussions and technical platforms such as APRICOT, IETF, BBF, SCTE, Worldwide IPv6 Technical Forums and Network Operators Groups, and Cisco Live. He influences technology directions and decisions with Cisco business units and customers and Internet community at large and is a coauthor and contributor of RFCs and drafts produced by IETF. Salman has produced three internetworking books: Cisco CCIE Fundamentals: Network Design & Case Study, PDIO of the IPT Networks, and Deploying IPv6 in Broadband Access Networks. He has been working with large-scale IP and multiservice networks and technologies for over 15 years.

Remember to use the rating system to let Salman know if you have received an adequate response.

 

Salman might not be able to answer each question due to the volume expected during this event. Remember that you can continue the conversation on the Security discussion forums shortly after the event. This event lasts through February 25, 2011. Visit this forum often to view responses to your questions and the questions of other community members.

15 Replies 15

naveen_yummy
Level 1
Level 1

Hi Guys,

 

I am just new to IPv6 and tried to test in the packet tracer. I configured the IPv6 pool, interface configuration on the router and then at the client end getting the dns server & domain name only. IPv6 address not coming up. Can you check the below configuration and debug results what is missing?

 

Configurations:

 

ip cef

ipv6 unicast-routing

!

no ipv6 cef

!

ipv6 dhcp pool Lan1

address prefix 2222:222:22::/64 lifetime 172800 86400

dns-server 2222:222:22::10

domain-name test.test

!

!

interface GigabitEthernet0/0

no ip address

duplex auto

speed auto

ipv6 address 3333:333::1/64

ipv6 nd managed-config-flag

ipv6 dhcp server Lan1

 

DHCP#sh ipv6 dhcp pool

DHCPv6 pool: Lan1

Address allocation prefix: 2222:222:22::/64 valid 172800 preferred 86400 (0 in use, 0 conflicts)

DNS server: 2222:222:22::10

Domain name: test.test

Active clients: 0

 

!

Debug Results:

 

*Mar 1 00:45:23.292: IPv6 DHCP: Received REQUEST from FE80::290:21FF:FE82:36E6 on GigabitEthernet0/0

*Mar 1 00:45:23.292: IPv6 DHCP: detailed packet contents

*Mar 1 00:45:23.292: src FE80::290:21FF:FE82:36E6 (GigabitEthernet0/0)

*Mar 1 00:45:23.292: dst FE80::201:63FF:FE66:D501 (GigabitEthernet0/0)

*Mar 1 00:45:23.292: type REQUEST(3), xid 11

*Mar 1 00:45:23.292: option ELAPSED-TIME(8), len 6

*Mar 1 00:45:23.292: elapsed-time 0

*Mar 1 00:45:23.292: option SERVERID(2), len 24

*Mar 1 00:45:23.292: 0003000100016366D501

*Mar 1 00:45:23.292: option CLIENTID(1), len 45

*Mar 1 00:45:23.292: 00-01-00-01-A4-E0-CB-39-00-90-21-82-36-E6

*Mar 1 00:45:23.292: option ORO(6), len 10

*Mar 1 00:45:23.292: IA-PD, DNS-SERVERS, DOMAIN-LIST

*Mar 1 00:45:23.292: option IA-PD(25), len 45

*Mar 1 00:45:23.292: IAID 0x8045, T1 0, T2 0

*Mar 1 00:45:23.292: option IAPREFIX(26), len 29

*Mar 1 00:45:23.292: preferred 0, valid 0, prefix 0.0.0.0/0

*Mar 1 00:45:23.292: IPv6 DHCP: Using interface pool Lan1

*Mar 1 00:45:23.292: IPv6 DHCP: Creating binding for FE80::290:21FF:FE82:36E6 in pool Lan1

*Mar 1 00:45:23.292: IPv6 DHCP: Allocating IA_PD 8045 in binding for FE80::290:21FF:FE82:36E6

*Mar 1 00:45:23.292: IPv6 DHCP: Allocating prefix 0.0.0.0/0 in binding for FE80::290:21FF:FE82:36E6, IAID 8045

 

*Mar 1 00:45:23.292: IPv6 DHCP: Sending REPLY to FE80::290:21FF:FE82:36E6 on GigabitEthernet0/0

*Mar 1 00:45:23.292: IPv6 DHCP: detailed packet contents

*Mar 1 00:45:23.292: src FE80::201:63FF:FE66:D501 (GigabitEthernet0/0)

*Mar 1 00:45:23.292: dst FE80::290:21FF:FE82:36E6 (GigabitEthernet0/0)

*Mar 1 00:45:23.292: type REPLY(7), xid 11

*Mar 1 00:45:23.292: option SERVERID(2), len 24

*Mar 1 00:45:23.292: 0003000100016366D501

*Mar 1 00:45:23.292: option CLIENTID(1), len 45

*Mar 1 00:45:23.292: 00-01-00-01-A4-E0-CB-39-00-90-21-82-36-E6

*Mar 1 00:45:23.292: option IA-PD(25), len 41

*Mar 1 00:45:23.292: IAID 0x8045, T1 0, T2 0

*Mar 1 00:45:23.292: option IAPREFIX(26), len 29

*Mar 1 00:45:23.292: preferred 0, valid 0, prefix 0.0.0.0/0

*Mar 1 00:45:23.292: option DNS-SERVERS(23), len 20

*Mar 1 00:45:23.292: 2222:222:22::10

*Mar 1 00:45:23.292: option DOMAIN-LIST(24), len 5

*Mar 1 00:45:23.292: test.test

 

 

 

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