split horizon groups, which is more clear.

http://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k_r5-1/lxvpn/configuration/guide/lesc51x/lesc51p2mps.html#68334

Setting up 802.q and switch ports in an ASR9000

http://www.brianraaen.com/2012/01/17/setting-up-802-q-and-switch-ports-in-an-asr9000/

Acl Based Forwarding

http://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k_r3-9-1/general/release/notes/rlse_a9k_392.html#wp433672

ASR900 Webinar

http://www.warisinfo.com/technology-tutorials