IPv6 RDNSS and DNSSL on Cisco IOS XE

The official documentation on Cisco IOS XE for Catalyst 4500E claims this is the syntax for specifying IPv6 RDNSS and DNSSL:

Switch(config)# interface Te1/1
Switch(config‑if)# ipv6 nd ra dns server 4::4
Switch(config‑if)# ipv6 nd ra dns search list aaa.cc.com

Using IOS XE 3.10.0E, the correct syntax for DNSSL is:

Switch(config)# interface Te1/1
Switch(config‑if)# ipv6 nd ra dns server 4::4
Switch(config‑if)# ipv6 nd ra dns‑search‑list domain aaa.cc.com

Sadly, the quality of Cisco’s documentation isn’t what it was back in 2006.

Cisco Catalyst 9400 Series

Cisco’s Catalyst 9400 Series introduced this summer do look promising, but it’s still missing a few highlights:

  • Complete support for redundant supervisors; unavailable according to the release notes dated July 31, 2017

    The supervisor module (hardware) supports redundancy, but the software does not. The associated route processor redundancy (RPR) and stateful switchover (SSO) features are also currently not supported. Redundacy[sic] in software will be supported in a later release.

  • Multigigabit line card
  • SFP+ line card, and possibly
  • QSFP/QSFP+ line cards
  • Visio stencils for chassis, power supplies, supervisor, and line cards

The release notes and data sheets are unclear on the supervisor’s ability to perform as a mobility agent.

So far the Catalyst 4500E Series seems more developed than the new Catalyst 9400 Series.