Virtual Switches

8/16/2019 Virtual Switches

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Virtul !witches


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!everl di"erent t#pes o$ routing

instnces e%ist&'Virtul(router routing instnces llow $or

#our single chssis to pper s )ultiplerouters to the outside world

' *ch with their own seprte routing t+les,protocols, link(stte dt+ses, nd so on

' e$ult instnce is n)ed default

'Virtul(switch routing instnces llow $or#our single chssis to pper s )ultiple

switches to the outside world' *ch hs its own -A t+les, V/AN I spce,

nd spnning tree do)ins

' he de$ult instnce is n)ed default-switch

outing InstncesMX240

hssis

default default-switch


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A !i)plistic View o$ outing Instnces

Inter$ce to t+le de$ult ssign)ent&

'/#er inter$ces ssocite with inet.0'/#er 2 inter$ces ssocite with the default-switch virtul

switch

MX240Layer 3 Interfaces Only(A Logical View)

Layer 3 and Layer 2 Interfaces(A Logical View)

outing +leinet.0 3de$ult4

rnsientInter$ces

hssisouting +leinet.0 3de$ult4

-A +lesde$ult(switch

I5 Inter$ces

6ne -At+le per+ridge

do)in orV/AN

g e ( % 7 # 7 8 .

0


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g e ( 1 7 1 7 : .

0

g e ( 1 7 1 7 ; .

0

g e ( 1 7 1 7 < .

0

user@switch> show route table vr1.inet.0

vr1.inet.0: 2 destinations, 2 routes (2 active, …

+ = Active oute, - = !ast Active, " = #oth

1$2.22.2.0%2& "'irect%0) 20:*:2& > via e-1%1%*.01$2.22.2.%2 "'!ocal%0) 20:*:2&

!ocal via e-1%1%*.0

…

outing Instnces=Virtul outer

>ou )ust ssign inter$ces

to virtul router'?lce routes ssocited with

those inter$ces onl# in thtvirtul router@s routing t+le

Layer 3 Interfaces Only(A Logical View)


hssis

outing +leinstance-name.inet.0

'edit)user@switch show routing-instances

vr1 / instance-te virtual-router

interface e-1%1%*.0 interface e-1%1%3.0 interface e-1%1%$.0

rotocols /

osf /

area 0.0.0.0 / interface e-1%1%*.0

interface e-1%1%3.0

interface e-1%1%$.0 4

…


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g e ( 1 7 1 7 9 .

0

g e ( 1 7 0 7 : .

0

outing Instnces=Virtul !witch

*ch virtul(switch routing instnce opertesindependentl# o$ the other virtul switches&

'outes ssocited with I5 inter$ces re plced in inet.0regrdless o$ the virtul switch to which the# +elong



-A +les

de$ult(switch

I5 Inter$ces

-A +lesinstance-name

6ne -At+le per

+ridgedo)in or

V/AN

hssis

Inter$ces usedin upco)ing

e%)ples


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ongure outing Instnce

ongure +se virtul(switch routing instnce&'ene the +ridge do)ins nd V/AN Is tht theswitch will use

'edit)

user@switch show routing-instances

virtual-sw-1 /

instance-te virtual-switch

5ride-do6ains /

vlan7100 /

vlan-id 100

4

vlan7200 / vlan-id 200

4

4

4


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onguring n Access ?ort

ongure n inter$ce tht cts s n ccess port $orthe virtul switch&'!peci$# the correct vlan-id so tht this inter$ce is

ssocited with the correct +ridge do)in

'edit)

user@switch show interfaces ge-1/0/5

unit 0 /

fa6il 5ride /

interface-6ode access

vlan-id 200

4

4

WARI!"""o))itting t this point cn cuse this inter$ce to +e dded to

the default-switch routing instnce, which could introduce loopinto #our topolog#.


8/18© 2010 Juniper Networks, Inc. All rights reserved. www.juniper.net | B

onguring runk ?ort

ongure n inter$ce tht cts s trunk port $or thevirtul switch&'!peci$# the correct vlan-id-list so tht this inter$ce is

ssocited with the correct +ridge do)ins

'edit)

user@switch show interfaces ge-1/1/4

unit 0 /

fa6il 5ride /

interface-6ode trun8

vlan-id-list ' 100 200 )

4

4

WARI!"""e)e)+er to +ind the trunk port to the virtulswitch to prevent the introduction o$ loop into

#our topolog#.


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onguring Virtul(!witch I5Inter$ce

ongure n I5 inter$ce tht cts s the I?gtew# $or +ridge do)in within thevirtul switch

'edit)

user@switch show interfaces

…

ir5 /

unit 1 /

descrition 9; for

fa6il inet /

address 1$2.22.2.2*&%2&

4

4

4

…


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5ind the Inter$ces to the Virtul !witch

!peci$# the inter$ces tht +elong to the virtul switch&

'/ist the trunk nd ccess ports s )e)+er inter$ces o$ the virtul switch

'/ist the I5 s therouting inter$ce $or thepproprite +ridge do)inwithin the virtul switch

'edit)


virtual-sw-1 /


interface e-1%0%*.0

interface e-1%1%&.0

5ride-do6ains /

vlan7100 /

vlan-id 100

4 vlan7200 /

vlan-id 200

routin-interface ir5.1

4 4

4



Veri$# ht ?orts 5elong to the Virtul!witch

Dse the show bridge domain co))nd toensure tht the congurtion settingcco)plished #our gol

user@switch> show bridge domain

outin instance #ride do6ain

e-1%0%0.0

e-1%0%&.0

default-switch vlan7200 200e-1%0%2.0

e-1%0%&.0

virtual-sw-1 vlan7100 100e-1%1%&.0

virtual-sw-1 vlan7200 200

e-1%0%*.0

e-1%1%&.0

ge(17179.0 nd ge(1707:.0 hve +een ddedto the correct routing instnce, +ridge

do)ins, nd V/ANs.



Veri$# outing

*nsure tht the pproprite routes pper inthe inet.0 routing t+le

user@switch> show route

inet.0: 3 destinations, 3 routes (3 active, 0 holddown, 0

hidden?+ = Active oute, - = !ast Active, " = #oth

10.210.12.0%2$ "'irect%0) 1d 22:&&:13

> via f0.0

10.210.12.1%2 "'!ocal%0) 1d 22:&&:13

!ocal via f0.0

1$2.22.2.0%2& "'irect%0) 00:0*:*&

> via ir5.1

1$2.22.2.2*&%2 "'!ocal%0) 00:1:

!ocal via ir5.1


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Interconnection -ethods

!upported )ethods&

'Internl, logicl tunnel inter$ce 3/#er onl#4

' wo e%ternl, ph#sicll# looped inter$ces 31 c+le4


outing +leinstance-name.inet.0

-A +les

de$ult(switch

I5 Inter$ces

-A +les

instance-name

hssis


/ogicl unnel E

?h#sicl /oop E


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>ou )ust en+le tunneling on the ?F* o$ -G!eries routersuser@switch> show interfaces terse

nterface Ad6in !in8 roto !ocal

e6ote

…

e-1%0%B u downe-1%0% u downe-1%1%0 u down

*n+ling unnel !upport

'edit)

user@switch show chassisfc 1 /

ic 0 / tunnel-services / 5andwidth 1

4

4

4

user@switch> show interfaces terse

nterface Ad6in !in8 roto !ocale6ote

…

e-1%0%B u down

e-1%0% u downr-1%0%10 u u

i-1%0%10 u u

lt-1%0%10 u u6t-1%0%10 u u

d-1%0%10 u ue-1%0%10 u u

vt-1%0%10 u u

e-1%1%0 u down


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ongure nd ssign the logicl tunnel inter$cesto the ppropritevirtul routers

/#er /ogicl unnel Inter$ceongurtion

'edit)

user@switch show interfaces lt-1/0/10

unit 0 / encasulation vlan

vlan-id 100

eer-unit 1 fa6il inet / address 1$2.22.10.1%0

4

4unit 1 / encasulation vlan

vlan-id 100

eer-unit 0 fa6il inet / address 1$2.22.10.2%0

…

hssis

lt(170710.0

lt(170710.1

'edit)user@switch show routing-instances vr1

instance-te virtual-routerinterface lt-1%0%10.1

interface e-1%1%*.0

user@switch> ping routing-instance vr1 172.22.10.1

1$2.22.10.1 (1$2.22.10.1?: *3 data 5tes

3& 5tes fro6 1$2.22.10.1: ic67seC=0 ttl=3& ti6e=0.BB 6s3& 5tes fro6 1$2.22.10.1: ic67seC=1 ttl=3& ti6e=&.1 6s


outing +levr1.inet.0


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ongure nd ssign the ph#sicl inter$ces

to the pproprite virtul switch

/#er 2 ?h#sicl /oop

'edit)

user@switch show interfaces

e-1%0%& /

unit 0 /

fa6il 5ride /

interface-6ode trun8 vlan-id-list ' 100

200 )

4

4

4

e-1%1%& /

unit 0 / fa6il 5ride /

interface-6ode trun8

vlan-id-list ' 100

200 )

…

-A +lesde$ult (switch

-A +lesvirtual-sw-1

hssis

ge(17079.0 ge(17179.0

'edit)


virtual-sw-1 /


…

interface e-1%1%&.0

5ride-do6ains / vlan7100 /

vlan-id 100

4

vlan7200 /

vlan-id 200

…


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Dse the show bridge domain co))nd to

veri$# settings

Veri$# !witch !ettings

-A +lesde$ult (switch

-A +lesvirtual-sw-1

hssis

ge(17079.0 ge(17179.0

user@switch> show bridge domain

outin instance #ride do6ain

default-switch vlan7100 100

e-1%0%&.0default-switch vlan7200 200

e-1%0%&.0

virtual-sw-1 vlan7100 100e-1%1%&.0

virtual-sw-1 vlan7200 200

e-1%1%&.0


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Virtual Switches

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Transcript of Virtual Switches