© 2004 Cisco Systems, Inc. All rights reserved. Printed in USA.
Presentation_ID.scr
616161
© 2004 Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
Unicast Forwarding Example Topology
Gig 5/1 Gig 5/2
20.2.1.0 /24
10.6.1.2
Host A
10.5.1.2
Host B
Fas 3/1 Fas 3/3
C4500 A
C4500 B
626262
© 2004 Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
Unicast Forwarding: CEF
• Check the routing, ARP, CEF, ADJ info in the supervisor
• For both unicast and multicast, the SW and HW tables should always
be consistent...if not…hardware table is full
128k entries for Supervisor IV/V and 32k entries for Supervisor II-Plus
C4K_L3HWFORWARDING-2-FWDCAMFULL
HW adjacency table has 32K entries
C4K_L3HWFORWARDING-3-NOMOREK2FIBADJS
• If table is not full…possibly a hardware issue...contact TAC
FIB ADJ
Routing ARP
SW
HW
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