IPv6 in the enterprise

[Dale W. Carder]

Thus spake Matthew Huff (mhuff at ox.com) on Mon, Apr 18, 2011 at 09:43:16AM -0400:
> 
> 1) Is there a the consensus about using First-Hop Redundancy protocols versus RA (HSRP, VRRP, GLBP). I assume the main reason for using them is faster failover and more control (priority, timers, etc..)
>
> 2) For first-hop interfaces on access switches, do people use eui-64 addresses or static? What about HSRP,VRRP,GLBP virtual interfaces. Since these will show up in monitoring systems (OpenView, OpenNMS, etc..) should they be static with reverse dns lookups configured?
> 
> 3) If using static addresses what link local addresses are people using? ::FFFF:FFFF:FFFE? Or ::0000:0000:0001 ? or something else?
 
We are using HSRP with static addressing (for link-local as well).
For the version of code that we are on, we couldn't use a global address
as the HSRP address, but this has not proved to be an issue.  In
addition, it has had the nice side effect of being able to tell everyone
that the router is always fe80::1, regardless of what network you are
on.

Primary router:
 ipv6 address FE80::3 link-local
 ipv6 address 2001:db8:a:100::3/64
 ipv6 pim dr-priority 4294967295
 ipv6 ospf 1 area 0
 standby version 2
 standby 1 ipv6 FE80::1
 standby 1 preempt
 standby 1 authentication foo

Secondary router:
 ipv6 address FE80::2 link-local
 ipv6 address 2001:db8:a:100::2/64
 ipv6 pim dr-priority 2147483647
 ipv6 ospf cost 250
 ipv6 ospf 1 area 0
 standby version 2
 standby 1 ipv6 FE80::1
 standby 1 priority 90
 standby 1 preempt
 standby 1 authentication foo

Cheers,
Dale