Cisco WS-C4507R Troubleshooting Manual page 21

RST-3508
9805_05_2004_c2
RST-3508
9805_05_2004_c2
© 2004 Cisco Systems, Inc. All rights reserved. Printed in USA.
Presentation_ID.scr
Blocking and Non-Blocking GigE Ports
A port that does not oversubscribe
•
access to the switching fabric is a non-
blocking port
A port that oversubscribes access to the
•
switching fabric is a blocking port
© 2004 Cisco Systems, Inc. All rights reserved.
Cisco Catalyst 4000/4500 Linecards
Six full-duplex GbE connections to switch fabric
•
Transparent
•
No local forwarding—all packets go to supervisor
GbE connections from switch fabric straight to
•
front-panel port or connect to stubs
Supervisor Switch Fabric
© 2004 Cisco Systems, Inc. All rights reserved.
Six Full-Duplex Gbps
Connections to
Supervisor Switch
Fabric
41 41 41
42 42 42