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Co!rse v Chapter #1
Chapter 1$
Analy%ing &he Cisco 'nterprise Camp!sArchitect!re
CCNP SWITCH: Implementing IP Switching
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Chapter 1 Objectives
(escri"e common camp!s design options and ho) designchoices a**ect implementation and s!pport o* a camp!s +A.(escri"e the access, distri"!tion, and core layers.(escri"e small, medi!m, and large camp!s net)or- designs.
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Introd!ction to
'nterpriseCamp!s et)or-(esign
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Enterprise Networ
Core ac-"oneCamp!s(ata Centerranch3A
Internet 'dge
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Core ac-"one6 interconnects the camp!s access, the data center, and 3A portions
o* the net)or-.
Camp!s6 is the portion o* the comp!ting in*rastr!ct!re that provides access to
net)or- comm!nication services and reso!rces to end !sers and
devices spread over a single geographic location.(ata center6 is a *acility !sed to ho!se comp!ting systems and associated
components.
Enterprise Networ
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ranch83A6 contains the ro!ters, s)itches, and so on to interconnect a main
o**ice to "ranch o**ices or other main o**ices
Internet 'dge6 encompasses the ro!ters, s)itches, *ire)alls, and net)or- devices
that interconnect the enterprise net)or- to the Internet.6
&he Internet 'dge incl!des technology necessary to connecttelecomm!ters *rom the Internet to services in the enterprise.
Enterprise Networ
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Camp!s "esigns
#o$!lar9 easily s!pports gro)th and change. Scaling thenet)or- is eased "y adding ne) mod!les in lie! o* completeredesigns.%esilient9 proper high9availa"ility :A characteristics res!ltin near9100; !ptime.&le'ible9 change in "!siness is a g!arantee *or anyenterprise. &hese changes drive camp!s net)or-re
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#!ltila(er Switches in Camp!s Networs
:ard)are9"ased ro!ting !sing
Application9Speci*ic IntegratedCirc!its ASICs>I, ?S@, and 'I> ares!pported+ayer s)itching speedsappro5imate that o* +ayer 2
s)itches+ayer / and +ayer 7 s)itchings!pported on some s)itches@!t!re$ !re +ayer environmentleveraging ine5pensive + accesslayer s)itches
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Cisco Switches
Catal(st )*++ &amil( !sed in camp!s, data center, andcore as )ell as 3A and "ranch
6 p to 1 slots and 1 109iga"it 'thernet inter*aces6 >ed!ndant po)er s!pplies, *ans, and s!pervisor engines6 >!ns Cisco I?S
Catal(st ,*++ &amil( !sed in distri"!tion layer and in
collapsed core environments6 p to 10 slots and several 109iga"it 'thernet inter*aces6 >!ns Cisco I?S
Catal(st -*)+ an$ -.*+ &amilies !sed in *i5ed9portscenarios at the access and distri"!tion layers
Ne'!s /+++0 *+++0 an$ .+++ &amilies D9?S "asedmod!lar data center s)itches
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EnterpriseCamp!s "esign
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!il$ing 2ccess0 !il$ing "istrib!tion0 an$ !il$ing Core3a(ers
!il$ing Core 3a(er: high9speedcamp!s "ac-"one designed tos)itch pac-ets as *ast as possi"leEprovides high availa"ility andadapts
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Core 3a(er
Aggregates distri"!tion layer s)itches.Implements scala"le protocols and technologies and load"alancing.:igh9speed layer s)itching !sing 109iga"it 'thernet.ses red!ndant + lin-s.
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Core 3a(er
3itho!t a core layer, the distri"!tion layer s)itches need to"e *!lly meshed.
6 (i**ic!lt to scale and increases the ca"ling re
As a recommended practice, deploy a dedicated camp!s core
layer to connect three or more physical segments or *o!r ormore pairs o* "!ilding distri"!tion s)itches in a large camp!s.Core layer constit!ents and *!nctions depend on the si%e andtype o* the net)or-.
6 camp!s designs can com"ine the core and distri"!tion layer *!nctions
at the distri"!9tion layer *or a smaller topology.
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"istrib!tion 3a(er
:igh availa"ility, *ast path recovery, load "alancing, FoS, and sec!rity
>o!te s!mmari%ation and pac-et manip!lation>edistri"!tion point "et)een ro!ting domainsac-et *iltering and policy ro!ting to implement policy9"ased connectivity&erminate G+As@irst :op >ed!ndancy rotocol
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2ccess 3a(er
High availabilit( s!pported "y many hard)are and so*t)are *eat!res, s!ch as
red!ndant po)er s!pplies and @irst :op >ed!ndancy rotocols @:>.
Convergence provides inline o)er over 'thernet o' to s!pport I telephony
and )ireless access points.
Sec!rit( incl!des port sec!rity, (:C snooping, (ynamic A> inspection, I
so!rce g!ard.
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Small Camp!s Networ
H200 end devices
Collapsed coreCatalyst 0 and 2B0 s)itches *or access layerCisco 1B00 and 2B00 ro!ters to interconnect "ranch83A
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#e$i!m Camp!s Networ
20091000 end devices>ed!ndant m!ltilayer s)itches at distri"!tion layerCatalyst /00 or 00 s)itches
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3arge Camp!s Networ
2000 end !sers
Stricter adherence to core, distri"!tion, access delineationCatalyst 00 s)itches in core and distri"!tion layerse5!s 7000 s)itches in data centers(ivision o* la"or amongst net)or- engineers
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Chapter 1 S!mmar(
'vol!tionary changes are occ!rring )ithin the camp!s
net)or-.'vol!tion re
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3ab 141Clearing a Switch
3ab 14/Clearing a Switch Connecte$ to a 3arger Networ
Chapter 1 3abs
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%eso!rces
))).cisco.com8en8S8prod!cts
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Chapter #