Usage
ethertype <'3com loop detection' | '3com tcp-ip' | '3com xns sys mgmt' | '3com1' | '3com2' | '3com3' | '802 local exp' | '802 oui extended' | '802.11i' | '802.11r frrr' | '802.1ab lldp' | '802.1ae macs' | '802.1q mmrp' | '802.1q mvrp' | '802.1q s-tag' | '802.1qbe i-sid' | '802.1qbg ecp' | '802.21 mihp' | '802.3 epon' | '802.3 slow protocol' | 'advanced encryption' | 'aeonic systems' | 'allen bradley' | 'allied telesyn' | 'alpha micro' | 'apollo computer' | 'apollo domain' | 'appletalk' | 'appletalk aarp' | 'applitek corp' | 'apricot comp' | 'arai bunkichi' | 'arp' | 'artisoft' | 'ascom banking' | 'athena prog' | 'atomic' | 'att0' | 'att1' | 'att2' | 'att3' | 'autophon' | 'axis communications' | 'banyan systems' | 'banyan vines' | 'banyan vines echo' | 'banyan vines loopb' | 'bbn simnet' | 'beacon probe' | 'berkeley trailer' | 'biin' | 'bridge comm' | 'cabletron' | 'chaosnet' | 'charles river' | 'charles river data' | 'cisco discovery' | 'cisco dtp' | 'cisco pagp' | 'cisco pvstp' | 'cisco stp' | 'cisco udld' | 'cisco vlan bridge' | 'cisco vtp' | 'comdesign' | 'compr. rtp setup' | 'compressed rtp' | 'comptgraphiccorp' | 'computer network' | 'computer protocol' | 'comsat labs' | 'control tech' | 'counterpoint comp1' | 'counterpoint comp2' | 'cray comm' | 'cronus direct' | 'cronus vln' | 'dansk data elektro' | 'datability' | 'datability2' | 'dca' | 'dca multicast' | 'dec customer' | 'dec decnet iv route' | 'dec diag' | 'dec lan monitor' | 'dec lanbridge' | 'dec lat' | 'dec lavc sca' | 'dec mop dump load' | 'dec mop remote con' | 'dec unassigned' | 'dec unassigned2' | 'dec unassigned3' | 'dec unassigned4' | 'dec unassigned5' | 'delta control' | 'dlog' | 'eapol' | 'ecma' | 'evans sutherland' | 'excelan' | 'experdata' | 'foundry networks' | 'gateway comm' | 'general dynamics' | 'geonetworking' | 'gsmp' | 'harris corp' | 'hayes' | 'hippi 6400' | 'hippi fp encap' | 'hp' | 'hp probe' | 'hypercom network sy' | 'idea courier' | 'inst ind info' | 'intergraph corp' | 'invisible software' | 'ip autonomous' | 'ipv4' | 'ipv6' | 'japan computer indu' | 'kinetics' | 'kti' | 'l2-is-is' | 'lanbridge cache' | 'landis gyp power' | 'landmark graphics' | 'lansoft 0' | 'lansoft 1-5' | 'little machines' | 'logicraft' | 'lrt' | 'marathon tech' | 'matra' | 'mcap' | 'merit internodal' | 'motorola' | 'motorola computer' | 'mpls' | 'mpls multicast' | 'nbs' | 'nestar' | 'network computing' | 'nixdorf' | 'nixdorf computers' | 'norand' | 'nortel slpp' | 'novell' | 'os9 microware' | 'pacer software' | 'pcs basic block' | 'phoenix microsys' | 'planning research ' | 'polygon' | 'ppp' | 'ppp ccp' | 'ppp chap' | 'ppp ipcp' | 'ppp lcp' | 'ppp lqr' | 'ppp mlcp' | 'ppp pap' | 'ppp spcp' | 'pppoe discovery' | 'pppoe session' | 'proteon' | 'protocol engines' | 'protocolengines xtp' | 'pupaddrtrans0' | 'pupaddrtrans1' | 'qualcomm1' | 'qualcomm2' | 'quantum software' | 'rad network devices' | 'rarp' | 'rational' | 'raw frame relay' | 'realtek rrcp' | 'retix' | 'rosemount corp' | 'saic' | 'sectra' | 'secure data' | 'sgi' | 'sgi/time warner' | 'siemens gammasonic' | 'silicon graphics' | 'sna over ethernet' | 'snmp over ethernet' | 'spider systems ltd' | 'stanford v kernel' | 'stp hippi st' | 'symbol tech' | 'symbolics private1' | 'symbolics private2' | 'taurus controls' | 'taylor instrument' | 'tcp ip compression' | 'technically elite' | 'tigan inc' | 'transetherbridging' | 'trfs' | 'trill' | 'trill fgl' | 'trill rbridge chan' | 'tymshare' | 'ungerman bass net' | 'ungermann bass dia' | 'ungermann bass dwn' | 'ungermann bass niu' | 'univ mass amherst' | 'univ of utah' | 'valid systems' | 'valis' | 'varian assoc' | 'veeco integ auto' | 'vg analytical' | 'vg laboratory' | 'vita link' | 'vmtp' | 'walker richer' | 'walker richer quin' | 'wellfleet comm' | 'x.25 level 3' | 'x.75' | 'xerox ieee802.3 pup' | 'xerox loopback' | 'xerox ns idp' | 'xerox pup' | 'xerox pup call' | 'xns compatability' | 'xns frame relay arp' | 'xyplex1' | 'xyplex2' >
 
 
Examples
ethertype 'cisco discovery'
ethertype polygon
ethertype 'cisco vlan bridge'