IPv6 Routing – Static and Basics

Static Routing From my previous post on addressing, the routing table below is for R1 and R2 which are connected using their Fa 0/0 interfaces. The [updated] option gives the time the route was installed into the routing table. R1#show ipv6 route updated IPv6 Routing Table - default - 3 entries Codes: C - Connected, … Continue reading IPv6 Routing – Static and Basics

IPv6 General Prefix and SLAAC Examples

General Prefix This is great for allowing auto configuration on a site.  You can configure a /48 global prefix, then allocate prefixs(subnets) per derived from it!  The names global prefix can contain more than one /48 address to aid migration of a whole site. Example: R1(config)#ipv6 general-prefix NOTEPAD 2001:CAFE:CAFE::/48 R1(config)#int fa 0/0 R1(config-if)#ipv6 address NOTEPAD … Continue reading IPv6 General Prefix and SLAAC Examples

Nexus SFP Invalid – Validation Failed

This is a note to remind myself of this error in the future. On site today i cam across a port member of a port channel associated with a vPC not coming up.  Checking the status gave: Core_Switch# show int eth 1/11 status -------------------------------------------------------------------------------- Port Name Status Vlan Duplex Speed Type -------------------------------------------------------------------------------- Eth1/11 -- sfpInvali … Continue reading Nexus SFP Invalid – Validation Failed