5Complicated evaluation ········································································································ 46Traffic policing ··························································································································· 46Line rate ···································································································································· 47Configuration task list·················································································································· 48Configuring traffic policing ·········································································································· 48Configuring traffic policing in policy-based approach ······························································ 49Configuring traffic policing in non policy-based approach ······················································· 49Configuring line rate ··················································································································· 50Displaying and maintaining line rate ···························································································· 516 Congestion management configuration ·············································································52Causes, impacts, and countermeasures of congestion ································································· 52Congestion management policies ······························································································ 53FIFO ······································································································································ 53Priority queuing ······················································································································ 54Custom queuing ···················································································································· 55Congestion management technology comparison ······································································ 55Configuring PQ ·························································································································· 56PQ configuration procedure··································································································· 57PQ configuration example on WX5002 ···················································································· 58PQ configuration example (on any H3C WX access controllers but WX5002) ······························ 60Configuring CQ ·························································································································· 60Configuration procedure ······································································································· 61CQ configuration example on WX5002···················································································· 62CQ configuration example (on any H3C WX access controllers but WX5002) ····························· 627 Support and other resources ······························································································64Related documentation ············································································································· 64Contact us································································································································· 64Documentation feedback ·········································································································· 64Technical support ······················································································································· 64Typographical conventions and symbols ····················································································· 65