IPv6

Hi, does anybody here have a practical experience with IPv6 implementing within a big corporate network? Let's say the corporate has got several thousands of sites, some of them in Europe, others in Asia and Americas. 20 Data Centers are used for th...

Hello all,I have a problem with an IPV6 deployment at home. My ISP returns both A and AAAA records for its outbound mail server, but this mail server is protected by a firewall which allows only IP addresses of the providers own ip space (so that no ...

Hello,We have an LNS (asr1k), dual-stack CPE and Radius server.Everything works fine if both ipv4 and ipv6 prefix is assigned to CPE by RadiusIf we set Radius server not to assign v6 prefix, we expect to build up an ipv4-only session over ppp.This is...

Hi all,I hope someone can help me out here with a NAT-PT configuration;I configured IPv6 NAT-PT on a CISCO1941/K9 (version 15.0(1r)M9)I cut/past the most important configuration from the router;-- ipv6 unicast-routingno ipv6 cef--interface GigabitEth...

Hi,Can Cisco 7600-7609 model router support ipv6 and  NAT64. and in my router ios is s72033-adventerprisek9_wan-mz.122-18.SXE6b.bin".whether i have to upgrade the ios version?

Hi,I have 2 x Cisco 6509-E switches running BGP for IPv6 with my ISP. Bizarrely, the BGP session establishes fine, but i do not learn any prefixes after the session is established. That is, until i add the 'neighbor x:x:x:x::y ebgp-multihop 2' comman...

RFC 4864 lists a couple of methods to prevent NAT66. One of what NAT44 can achieve is masking the source addresses of both ends, which is common when two enterprises network admin do not want the real peering hosts to be seen by each other. Of course...

Hi all,we are currently trying to establish IPv6 between two routers. The routersare connected to 3560G switches (c3560-ipbasek9-mz.122-58.SE2).We have some issues with IPv6 neighbor discovery, the routers did not seeeach other in neighbor table (IPv...

Dear all, what is the best practice and  how can i use ipv6 address in point to point wan link  like ipv4 /30 .please share any link or example .2001:2206:72fe::/48 thanks

I'm trying to draft an IPv6-based version of our location's current routing configuration in anticipation of when our ISP will finally roll it out, and address management has been giving me the biggest headache - ironic, considering IPv6 was supposed...

Does anyone have any experience with configuring IOS firewall with tunnel interfaces?Have router with version 15.4(3)M and a 6 rd tunnel configured, and IPv6 is working fine when I remove the interfaces from the security zones.How does one correctly ...

Hi      how can I advertise a local IPv6 pool using Eigrp the pool is used in Cisco ASR 1006 configured as PPPOE server 

Hi R1 and R2 are connected by serial links, with IPV6 address global unicast and link-local every link.I can do ping between them. When I do ping to link-local address next router, I need to specify outgoing interface, ping is succesful.However I can...