Concept Guide

Marking Egress Packets with a DEI Value.......................................................................................................... 887
Dynamic Mode CoS for VLAN Stacking.................................................................................................................... 888
Mapping C-Tag to S-Tag dot1p Values............................................................................................................... 889
Layer 2 Protocol Tunneling...........................................................................................................................................890
Enabling Layer 2 Protocol Tunneling.....................................................................................................................891
Specifying a Destination MAC Address for BPDUs.......................................................................................... 892
Setting Rate-Limit BPDUs...................................................................................................................................... 892
Debugging Layer 2 Protocol Tunneling................................................................................................................892
Provider Backbone Bridging.........................................................................................................................................892
Chapter 52: sFlow..................................................................................................................... 894
Overview...........................................................................................................................................................................894
Implementation Information......................................................................................................................................... 894
Enabling and Disabling sFlow....................................................................................................................................... 895
Enabling and Disabling sFlow on an Interface..........................................................................................................895
sFlow Show Commands................................................................................................................................................ 895
Displaying Show sFlow Global................................................................................................................................895
Displaying Show sFlow on an Interface............................................................................................................... 896
Displaying Show sFlow on a Line Card................................................................................................................ 896
Configuring Specify Collectors.................................................................................................................................... 897
Changing the Polling Intervals..................................................................................................................................... 897
Back-Off Mechanism..................................................................................................................................................... 897
sFlow on LAG ports........................................................................................................................................................ 897
Enabling Extended sFlow.............................................................................................................................................. 897
Important Points to Remember............................................................................................................................. 898
Chapter 53: Simple Network Management Protocol (SNMP).....................................................900
Protocol Overview..........................................................................................................................................................900
Implementation Information.......................................................................................................................................... 901
Configuration Task List for SNMP.............................................................................................................................. 901
Important Points to Remember....................................................................................................................................901
Set up SNMP....................................................................................................................................................................901
Creating a Community............................................................................................................................................. 902
Setting Up User-Based Security (SNMPv3)......................................................................................................902
Enable SNMPv3 traps..............................................................................................................................................903
Reading Managed Object Values................................................................................................................................ 903
Writing Managed Object Values..................................................................................................................................904
Configuring Contact and Location Information using SNMP...............................................................................904
Configuring the CPU Utilization for SNMP Traps.................................................................................................. 905
Configuring Threshold Memory Utilization for SNMP Traps............................................................................... 906
Subscribing to Managed Object Value Updates using SNMP..............................................................................907
Enabling a Subset of SNMP Traps............................................................................................................................. 908
Enabling an SNMP Agent to Notify Syslog Server Failure.................................................................................... 910
Copy Configuration Files Using SNMP........................................................................................................................911
Copying a Configuration File................................................................................................................................... 913
Copying Configuration Files via SNMP.................................................................................................................913
Copying the Startup-Config Files to the Running-Config............................................................................... 914
Copying the Startup-Config Files to the Server via FTP.................................................................................914
Copying the Startup-Config Files to the Server via TFTP.............................................................................. 914
26
Contents