Users Guide
Configuring Options for Trunk Ports.................................................................................................................... 905
Debugging VLAN Stacking.....................................................................................................................................906
VLAN Stacking in Multi-Vendor Networks...........................................................................................................907
VLAN Stacking Packet Drop Precedence...................................................................................................................910
Enabling Drop Eligibility............................................................................................................................................910
Honoring the Incoming DEI Value........................................................................................................................... 911
Marking Egress Packets with a DEI Value............................................................................................................ 912
Dynamic Mode CoS for VLAN Stacking......................................................................................................................912
Mapping C-Tag to S-Tag dot1p Values.................................................................................................................913
Layer 2 Protocol Tunneling........................................................................................................................................... 914
Implementation Information....................................................................................................................................916
Enabling Layer 2 Protocol Tunneling..................................................................................................................... 916
Specifying a Destination MAC Address for BPDUs............................................................................................. 917
Setting Rate-Limit BPDUs...................................................................................................................................... 917
Debugging Layer 2 Protocol Tunneling................................................................................................................. 918
Provider Backbone Bridging..........................................................................................................................................918
51 sFlow........................................................................................................................................................ 919
Overview......................................................................................................................................................................... 919
Implementation Information..........................................................................................................................................919
Important Points to Remember.............................................................................................................................920
Enabling and Disabling sFlow....................................................................................................................................... 920
Enabling and Disabling sFlow on an Interface............................................................................................................920
sFlow Show Commands............................................................................................................................................... 920
Displaying Show sFlow Global.................................................................................................................................921
Displaying Show sFlow on an Interface.................................................................................................................921
Displaying Show sFlow on a Line Card................................................................................................................. 922
Configuring Specify Collectors.................................................................................................................................... 922
Changing the Polling Intervals......................................................................................................................................922
Back-Off Mechanism....................................................................................................................................................923
sFlow on LAG ports.......................................................................................................................................................923
Enabling Extended sFlow..............................................................................................................................................923
Important Points to Remember.............................................................................................................................924
52 Simple Network Management Protocol (SNMP).....................................................................................925
Protocol Overview.........................................................................................................................................................925
Implementation Information......................................................................................................................................... 926
Configuration Task List for SNMP..............................................................................................................................926
Related Configuration Tasks..................................................................................................................................926
Important Points to Remember...................................................................................................................................926
Set up SNMP.................................................................................................................................................................926
Creating a Community............................................................................................................................................ 927
Setting Up User-Based Security (SNMPv3)....................................................................................................... 927
Reading Managed Object Values.................................................................................................................................928
Writing Managed Object Values..................................................................................................................................929
Configuring Contact and Location Information using SNMP.................................................................................. 929
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