I got into some interesting discussions about IPv6 on Twitter. Then someone asked if Android is getting DHCPv6 support in version 11 of the OS. When IPv6 was developed, initially with RFC 2460, there was this idea that: Forget all
IPv6 Support in VRF on Catalyst 3k
I was looking for information on running IPv6 in VRF on the Catalyst 3k platform and there wasn’t much information available. I tried running IPv6 in VRF on Catalyst 3560 with correct SDM profile but got this error message: Switch(config-vrf)#address-family
Catalyst 3750 IPv6 ACL Limitations
I recently ran into some limitations of IPv6 ACLs on the Catalyst 3750 platform. I had developed an ACL to protect from receiving traffic from unwanted address ranges such as ::, ::1, ::FFFF:0:0/96. The first address is the unspecified address,
Busting Myths – IPv6 Link Local Next Hop into BGP
In some publications it is mentioned that a link local next-hop can’t be used when redistributing routes into BGP because routers receiving the route will not know what to do with the next-hop. That is one of the reason why
IPv6 Multicast
These are my notes for IPv6 multicast for the CCDE exam. Overview Prefix FF::/8 reserved for multicast Multicast Listener Discovery (MLD) replaces IGMP MLD is part of ICMPv6 MLDv1 equivalent to IGMPv2 MLDv2 equivalent to IGMPv3 ASM, SSM and Bidir
Service Provider IPv6 Deployment
These are my study notes regarding IPv6 deployment in SP networks in preparation for the CCDE exam. Drivers for implementing IPv6 External drivers SP customers that need access to IPv6 resources SP customers that need to interconnect their IPv6 sites
A Quick Look at NAT64 and NAT46
Introduction In the best of worlds we would all be using native IPv6 now, or at least dual stack. That is not the case however and IPv4 will be around for a long time yet. During that time that both
Cisco updates the Catalyst 2960 – Catalyst 2960-X and Catalyst 2960-XR
The Catalyst 2960 is a very common switch in any environment that has Cisco devices. A couple of years ago the 2960 got stacking via the 2960-S model. It also got the ability to do static routes which was a
IPv6 operation and best practices – documents to read
Unfortunately I don’t get to do much v6 at my job yet but I still like to stay updated on what is happening. Do you run any v6 in your network? If so, do you run it native or tunneled
EIGRP named configuration
You might think that EIGRP being around for so long is not getting any attention from Cisco, not true. EIGRP is still being developed and in later releases you can run what is called named configuration. Doing this you can