mpls20s02l02
TRANSCRIPT
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2003, Cisco Systems, Inc. All rights reserved. MPLS v2.02-
2003, Cisco Systems, Inc. All rights reserved.
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2003, Cisco Systems, Inc. All rights reserved. 2
L!"el Assignment !nd #istri"$tion
Convergence in %r!me-mode MPLS
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2003, Cisco Systems, Inc. All rights reserved. MPLS v2.02-3
&$tline
&vervie'
Ste!dy St!te (o$ting Protocol Convergence
MPLS Convergence
Lin) (ecovery Actions
Lesson S$mm!ry
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2003, Cisco Systems, Inc. All rights reserved. MPLS v2.02-*
Ste!dy St!te #escri+tion
Ater the LS(s h!ve ech!nged the l!"els, LI, L%I, !nd %I
d!t! str$ct$res !re com+letely +o+$l!ted.
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2003, Cisco Systems, Inc. All rights reserved. MPLS v2.02-/
Lin) %!il$re Actions
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2003, Cisco Systems, Inc. All rights reserved. MPLS v2.02-
Lin) %!il$re Actions
(o$ting +rotocol neigh"ors !nd L#Pneigh"ors !re lost !ter ! lin) !il$re.
1ntries !re removed rom v!rio$sd!t! str$ct$res.
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(o$ting Protocol Convergence
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(o$ting Protocol Convergence
(o$ting +rotocols re"$ild the IP ro$tingt!"le !nd the IP or'!rding t!"le.
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MPLS Convergence
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MPLS Convergence
5he L%I !nd l!"eling inorm!tion inthe %I !re re"$ilt immedi!tely !terthe ro$ting +rotocol convergence,"!sed on l!"els stored in the LI.
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MPLS Convergence 6Cont.7Ater ! Lin) %!il$re
MPLS convergence in r!me-mode MPLS doesnot !ect the over!ll convergence time.
MPLS convergence occ$rs immedi!tely !ter thero$ting +rotocol convergence, "!sed on l!"els
!lre!dy stored in the LI.
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Lin) (ecovery Actions
(o$ting +rotocol neigh"ors !rediscovered !ter lin) recovery.
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Lin) (ecovery Actions 6Cont.7IP (o$ting Convergence
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Lin) (ecovery Actions 6Cont.7IP (o$ting Convergence
IP ro$ting +rotocols re"$ildthe IP ro$ting t!"le.
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Lin) (ecovery Actions 6Cont.7IP (o$ting Convergence
IP ro$ting +rotocols re"$ild the IPro$ting t!"le.
5he %I !nd the L%I !re !lso re"$ilt,"$t the l!"el inorm!tion might "el!c)ing.
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Lin) (ecovery Actions 6Cont.7MPLS Convergence
(o$ting +rotocol convergence o+timi8es theor'!rding +!th !ter ! lin) recovery.
5he LI might not cont!in the l!"el rom the ne'net ho+ "y the time the I9P convergence iscom+lete.
1nd-to-end MPLS connectivity might "eintermittently "ro)en !ter lin) recovery.
:se MPLS 5r!ic 1ngineering or m!)e-"eore-"re!)recovery.
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S$mm!ry
MPLS is $lly $nction!l 'hen LI, L%I, !nd %It!"les !re +o+$l!ted.
&ver!ll net'or) convergence is de+endent $+on
the I9P.
:+on ! lin) !il$re, entries !re removed rom sever!lro$ting t!"les.
MPLS convergence in ! r!me-mode net'or) does not
!ect over!ll convergence time.
MPLS d!t! str$ct$res m!y not cont!in $+d!ted d!t!"y the time the I9P convergence is com+lete.
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