Cisco WS-C4507R Troubleshooting Manual page 11

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
HSRP Redundancy
HSRP configured between supervisors on
•
different Catalyst 4500 chassis
HSRP configured between a Catalyst 4500
•
and an external router
No HSRP between two supervisors on the
•
same chassis since the standby supervisor
is in suspended mode
© 2004 Cisco Systems, Inc. All rights reserved.
Port Channel Redundancy
Layer 2 EtherChannel
•
All interfaces in the same VLAN or trunks with trunking mode the same on
both ends
When trunking...allowed ranges of VLANs must be the same
Layer 3 EtherChannel bundles
•
Port channel must be created first; then...
Use "no switchport" to create the layer 3 ports in the channel
Supervisor Engine ports in an EtherChannel
•
Supervisor II: Both ports can be in the EtherChannel
Single Cisco IOS supervisor in slot 1 or 2: gi1/1–2 or gi2/1–2 active
With Sup II-Plus or IV Dual Supervisors,
gig1/2 and gig2/2 can be placed in an EtherChannel bundle for backup
With Supervisor V, all four uplinks are active
© 2004 Cisco Systems, Inc. All rights reserved.
® bundles
only gig1/1 AND gig2/1 active; but
21 21 21
22 22 22