IPv6

I don't quite understand the way IPv6 RS and RA works. I know that Neighbor Discovery Protocol (ND) is the replacement in the IPv6 world for ARP, I just don't understand how it works. So from what I understand, when you enable ipv6 on an interface, i...

I have assigned three addresses on a loopback interface I want to use for management purposes (ie "logging source-interface Lo 0").  I have assigned a "primary" routable address from the 2604:: space, a backup address from 2001:: and a unique local a...

For HSRP and IPv6, I'm toying with the idea of using the same link local on all segments along with static Globals.FE80::1 HSRPFE80::2 First routerFE80::3 Second router2001:db8::1/64 HSRP2001:db8::2/64 First Router2001:db8::3/64 Second RouterOn my 45...

For those of you that allow your router transits to use eui-64, how to you keep track of the IPs in DNS for reverse resolution?And how do you track needed changes to DNS after an RMA that will cause the eui-64'd interface IPs to change?

We've found that we have to set static link local IPs when two routers might peer over multiple VLAN interfaces.The issue is that the routers, 6500s with sup720s, utilize the same autoconfig'd link local address on each VLAN interface.   EIGRP IPv6 r...

Hi,I'm trying to implement ipv6 dhcp relay agent using ISR 1841 as the relay agent.both client and server are ISC's implementation.The problem i'm facing is that eventough the DHCP Server sends the prefix delegation option to the client the ISR 1841 ...

Hi,We want to enable the 6PE feature in the 7609 router.But we couldn’t configure send-label command under [address-family ipv6]. We are using ios version s222-advipservicesk9_wan-mz.122-18.SXF12a.bin. Does this version supports the above feature? if...

Hi All, (Apologies if this question appears twice. Apparently I had an interface problem)I'm finishing up my studies on the IPv6 portion of the CCNA material, and my book seems to completly ignore the fact that 6to4 addresses seem to look different t...

Dear all,   Recenetly, I get involved the implmentation IPv6 Cisco Netwflow collector utility to capture the ipv6 netflow data from Cisco 6509E-VSS (Cisco IOS Software, s72033_rp Software (s72033_rp-IPSERVICESK9_WAN-M), Version 12.2(33)SXI5, RELEASE ...

Dear All,We made a small test environment to test the IPv6 VPN'S over IPv4 MPLS Backbone, we deploy the 6PE Solution, we did successfully testing.The Hardware used in this POC, are as under:1- Cisco 7606 Routers --> as a PE --> ES20 Module --> GigEth...