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FibeAir IP-10
Trunk VS. Access
®
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Agenda
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1. VA! TA" Attributes
#. Access Port
$. Trunk Port
%. &'tracting fra(es out of a trunk
). "eneral "uidelines
*. &+S Trunk Configuration
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VA! TA" Attributes
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1. In # &T, sitcing/ # traffic can be engineered using te VA! TA"attributes
#. # traffic is controlled by defining port (e(bersip Access or Trunk
$. Togeter/ port (e(bersip # traffic engineering con2ert
connectionless to connection-oriented netork
%. In suc netorks/ ser2ices are better deployed and (aintained
). VA! TA" attributes include3 VA! I4 51# bits6
3 Priority 7its 5$ bits6
). Additional attributes (ay be used to engineer traffic3 +AC 4A3 Port nu(ber
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Access Port
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3 Access Port is a port ic is aare of a single VA! only
3 Ingress traffic is e'pected to be 8ntagged/ e.g. 9 no VA!
infor(ation e'ists itin te recei2ed &ternet fra(e
3 All fra(es tat are recei2ed troug tis port are tagged it
default VA! 5VI4 P bits6
3 All fra(es tat e'it troug tis port toards custo(er de2ices are
untagged 5VA! is re(o2ed6
3 8sers can configure te # sitc to assign different taggingscenarios to different ports
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Access Port
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3 et us e'a(ine te Tagging : 8ntagging process of a # sitc
DA SA Type Payload FCS
# &T, S;
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Access Port 9 Tagging ingress fra(es
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3 et us e'a(ine te Tagging : 8ntagging process of Port
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Access Port 9 Tagging (ultiple ports
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3 Te sitc can indi2idually tag (ultiple Access ports it sa(e VI4 oruni>ue VI4
DA SA Type Payload FCS
DA SA Type Payload FCS
DA SA Type Payload FCS
VLAN TAG = 10
Tagging
Port
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Trunk Port 9 (ultiple VI4s aareness
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3 To be able to trans(it ? recei2e (ultiple VA!s/ te co((on port as tobe configured as a Trunk Port
DA SA Type Payload FCS
DA SA Type Payload FCS
DA SA Type Payload FCS
VLAN TAG = 10
Trunk Port
Port
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Trunk Port 9 (ultiple VI4s aareness
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3 Any port can be configured as Trunk3 In tis e'a(ple/ port
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Trunk ? Access 9 &'tracting fra(es out of a Trunk
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3 A certain VA! can be e'tracted out of a Trunk 2ia Access port assigned
it specific VA! (e(bersip 54efault VI46
DASA Type Payload FCSVLAN TAG = 10
Port
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"eneral guidelines
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3 Access port can only recei2e untagged fra(es fro( custo(er de2ice
3 Access port can only trans(it untagged fra(es toards custo(er de2ice
3 Access port supports single VA!
3 Access port can be connected to an Access port only
3 Trunk port can only recei2e : trans(it tagged fra(es
3 Trunk port supports (ultiple VA!s
3 Trunk port can be connected to a Trunk port only
3 ;en configuring Access or Trunk port/ (e(bersip needs to be defined
ne't 5ic VA!s are supportedB6
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&+S Trunk Configuration
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