Concept Guide

Debugging VLAN Stacking......................................................................................................................................917
VLAN Stacking in Multi-Vendor Networks............................................................................................................918
VLAN Stacking Packet Drop Precedence.................................................................................................................. 922
Enabling Drop Eligibility........................................................................................................................................... 922
Honoring the Incoming DEI Value.......................................................................................................................... 923
Marking Egress Packets with a DEI Value............................................................................................................ 923
Dynamic Mode CoS for VLAN Stacking..................................................................................................................... 924
Mapping C-Tag to S-Tag dot1p Values...................................................................................................................925
Layer 2 Protocol Tunneling........................................................................................................................................... 926
Implementation Information....................................................................................................................................927
Enabling Layer 2 Protocol Tunneling......................................................................................................................928
Specifying a Destination MAC Address for BPDUs.............................................................................................928
Setting Rate-Limit BPDUs......................................................................................................................................928
Debugging Layer 2 Protocol Tunneling..................................................................................................................929
Provider Backbone Bridging.........................................................................................................................................929
52 sFlow.......................................................................................................................................................930
Overview.........................................................................................................................................................................930
Implementation Information..........................................................................................................................................930
Important Points to Remember.............................................................................................................................. 931
Enabling Extended sFlow...............................................................................................................................................931
Enabling and Disabling sFlow on an Interface............................................................................................................ 932
Enabling sFlow Max-Header Size Extended...............................................................................................................932
sFlow Show Commands............................................................................................................................................... 933
Displaying Show sFlow Global................................................................................................................................933
Displaying Show sFlow on an Interface.................................................................................................................934
Displaying Show sFlow on a Stack-unit................................................................................................................ 935
Conguring Specify Collectors.................................................................................................................................... 935
Changing the Polling Intervals......................................................................................................................................935
Back-O Mechanism.................................................................................................................................................... 936
sFlow on LAG ports.......................................................................................................................................................936
Enabling Extended sFlow..............................................................................................................................................936
Important Points to Remember..............................................................................................................................937
53 Simple Network Management Protocol (SNMP)..................................................................................... 938
Protocol Overview.........................................................................................................................................................939
Implementation Information..........................................................................................................................................939
SNMPv3 Compliance With FIPS................................................................................................................................. 939
Conguration Task List for SNMP...............................................................................................................................940
Related Conguration Tasks...................................................................................................................................940
Important Points to Remember.................................................................................................................................... 941
Set up SNMP..................................................................................................................................................................941
Creating a Community............................................................................................................................................. 941
Setting Up User-Based Security (SNMPv3)........................................................................................................ 941
Reading Managed Object Values.................................................................................................................................943
Writing Managed Object Values...................................................................................................................................943
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