Users Guide

Debugging VLAN Stacking....................................................................................................................................... 782
VLAN Stacking in Multi-Vendor Networks................................................................................................................782
VLAN Stacking Packet Drop Precedence....................................................................................................................... 787
Enabling Drop Eligibility............................................................................................................................................. 787
Honoring the Incoming DEI Value..............................................................................................................................787
Marking Egress Packets with a DEI Value.................................................................................................................788
Dynamic Mode CoS for VLAN Stacking......................................................................................................................... 788
Mapping C-Tag to S-Tag dot1p Values...................................................................................................................... 790
Layer 2 Protocol Tunneling............................................................................................................................................. 790
Implementation Information......................................................................................................................................792
Enabling Layer 2 Protocol Tunneling......................................................................................................................... 792
Specifying a Destination MAC Address for BPDUs...................................................................................................793
Setting Rate-Limit BPDUs........................................................................................................................................793
Debugging Layer 2 Protocol Tunneling......................................................................................................................793
Provider Backbone Bridging........................................................................................................................................... 794
54 sFlow........................................................................................................................ 795
Overview........................................................................................................................................................................795
Implementation Information............................................................................................................................................796
Important Points to Remember................................................................................................................................ 796
Enabling and Disabling sFlow..........................................................................................................................................796
Enabling and Disabling sFlow on an Interface................................................................................................................. 796
Enabling sFlow Max-Header Size Extended....................................................................................................................797
sFlow Show Commands.................................................................................................................................................798
Displaying Show sFlow Global.................................................................................................................................. 798
Displaying Show sFlow on an Interface.....................................................................................................................798
Displaying Show sFlow on a Stack-unit.................................................................................................................... 799
Conguring Specify Collectors....................................................................................................................................... 799
Changing the Polling Intervals........................................................................................................................................ 799
Back-O Mechanism.....................................................................................................................................................800
sFlow on LAG ports....................................................................................................................................................... 800
55 Simple Network Management Protocol (SNMP)....................................................... 801
Protocol Overview.......................................................................................................................................................... 801
Implementation Information............................................................................................................................................ 801
Conguration Task List for SNMP...................................................................................................................................801
Related Conguration Tasks......................................................................................................................................801
Important Points to Remember................................................................................................................................802
Set up SNMP.................................................................................................................................................................802
Creating a Community............................................................................................................................................. 802
Setting Up User-Based Security (SNMPv3)............................................................................................................ 802
Reading Managed Object Values....................................................................................................................................804
Writing Managed Object Values..................................................................................................................................... 804
Conguring Contact and Location Information using SNMP.......................................................................................... 805
Subscribing to Managed Object Value Updates using SNMP.........................................................................................805
Enabling a Subset of SNMP Traps................................................................................................................................. 806
27