Cisco ASR 9006 Manuale Utente Pagina 45

  • Scaricare
  • Aggiungi ai miei manuali
  • Stampa
  • Pagina
    / 63
  • Indice
  • SEGNALIBRI
  • Valutato. / 5. Basato su recensioni clienti
Vedere la pagina 44
© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Public
Presentation_ID
46
Z
/z
AS X
AS Y
iBGP
eBGP
Y2
Y3
Y1
X1
X5
X4
X3
X2
BGP PIC failure example
If X4 node or X1-X4 link fail
IGP converges and now the best
IGP path to X2 is via X5
Instead of writing 250k BGP
changes, we only need to change
the ONE non-recursive LDI table,
which is to replace X4/interface
with X5/interface
O(1) vs. O(n) convergence for BGP
Non-Recursive
Prefix Leaf
X2
recursive
via X2
via X5
TenGig 1/0/1/0 Output I/F
Linecard Hardware FIB structures
this used to be X4!
In-place modification
to be X5
Recursive
Prefix Leaf
Z1 … Z250,000
Vedere la pagina 44
1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 62 63

Commenti su questo manuale

Nessun commento