Administrator Guide

Debugging VLAN Stacking......................................................................................................................................844
VLAN Stacking in Multi-Vendor Networks......................................................................................................... 844
VLAN Stacking Packet Drop Precedence.................................................................................................................848
Enabling Drop Eligibility............................................................................................................................................848
Honoring the Incoming DEI Value..........................................................................................................................848
Marking Egress Packets with a DEI Value.......................................................................................................... 849
Dynamic Mode CoS for VLAN Stacking.................................................................................................................... 849
Mapping C-Tag to S-Tag dot1p Values................................................................................................................ 851
Layer 2 Protocol Tunneling........................................................................................................................................... 851
Enabling Layer 2 Protocol Tunneling....................................................................................................................853
Specifying a Destination MAC Address for BPDUs.......................................................................................... 854
Setting Rate-Limit BPDUs...................................................................................................................................... 854
Debugging Layer 2 Protocol Tunneling................................................................................................................854
Provider Backbone Bridging.........................................................................................................................................855
Chapter 51: sFlow......................................................................................................................856
Overview...........................................................................................................................................................................856
Implementation Information......................................................................................................................................... 856
Enabling Extended sFlow.............................................................................................................................................. 857
Enabling and Disabling sFlow on an Interface..........................................................................................................858
Enabling and Disabling sFlow for Egress Traffic............................................................................................... 858
Enabling sFlow Max-Header Size Extended.............................................................................................................858
sFlow Show Commands................................................................................................................................................ 859
Displaying Show sFlow Global................................................................................................................................859
Displaying Show sFlow on an Interface............................................................................................................... 860
Displaying Show sFlow on a Stack-unit...............................................................................................................860
Configuring Specify Collectors.....................................................................................................................................861
Changing the Polling Intervals...................................................................................................................................... 861
Back-Off Mechanism......................................................................................................................................................861
sFlow on LAG ports.........................................................................................................................................................861
Enabling Extended sFlow...............................................................................................................................................861
Important Points to Remember............................................................................................................................. 862
Chapter 52: Simple Network Management Protocol (SNMP)..................................................... 864
Protocol Overview..........................................................................................................................................................865
Implementation Information......................................................................................................................................... 865
SNMPv3 Compliance With FIPS................................................................................................................................. 865
Configuration Task List for SNMP............................................................................................................................. 866
Important Points to Remember...................................................................................................................................866
Set up SNMP................................................................................................................................................................... 866
Creating a Community............................................................................................................................................. 867
Setting Up User-Based Security (SNMPv3)...................................................................................................... 867
Enable SNMPv3 traps..............................................................................................................................................868
Reading Managed Object Values................................................................................................................................ 868
Writing Managed Object Values..................................................................................................................................869
Configuring Contact and Location Information using SNMP...............................................................................869
Subscribing to Managed Object Value Updates using SNMP..............................................................................870
Enabling a Subset of SNMP Traps.............................................................................................................................. 871
Enabling an SNMP Agent to Notify Syslog Server Failure....................................................................................872
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Contents