Concept Guide

VLAN Stacking............................................................................................................................................................... 772
Important Points to Remember..............................................................................................................................773
Congure VLAN Stacking.......................................................................................................................................773
Creating Access and Trunk Ports...........................................................................................................................774
Enable VLAN-Stacking for a VLAN........................................................................................................................774
Conguring the Protocol Type Value for the Outer VLAN Tag.......................................................................... 775
Conguring Options for Trunk Ports..................................................................................................................... 775
Debugging VLAN Stacking..................................................................................................................................... 776
VLAN Stacking in Multi-Vendor Networks............................................................................................................777
VLAN Stacking Packet Drop Precedence................................................................................................................... 781
Enabling Drop Eligibility............................................................................................................................................ 781
Honoring the Incoming DEI Value........................................................................................................................... 781
Marking Egress Packets with a DEI Value............................................................................................................ 782
Dynamic Mode CoS for VLAN Stacking..................................................................................................................... 783
Mapping C-Tag to S-Tag dot1p Values...................................................................................................................784
Layer 2 Protocol Tunneling........................................................................................................................................... 785
Implementation Information....................................................................................................................................786
Enabling Layer 2 Protocol Tunneling...................................................................................................................... 787
Specifying a Destination MAC Address for BPDUs............................................................................................. 787
Setting Rate-Limit BPDUs...................................................................................................................................... 787
Debugging Layer 2 Protocol Tunneling..................................................................................................................788
Provider Backbone Bridging......................................................................................................................................... 788
51 sFlow........................................................................................................................................................789
Overview.........................................................................................................................................................................789
Implementation Information..........................................................................................................................................789
Important Points to Remember............................................................................................................................. 790
Enabling and Disabling sFlow........................................................................................................................................790
Enabling and Disabling sFlow on an Interface...................................................................................................... 790
Enabling sFlow Max-Header Size Extended...............................................................................................................790
sFlow Show Commands................................................................................................................................................792
Displaying Show sFlow Global................................................................................................................................ 792
Displaying Show sFlow on an Interface.................................................................................................................792
Displaying Show sFlow on a Stack Unit................................................................................................................ 793
Conguring Specify Collectors.....................................................................................................................................793
Changing the Polling Intervals......................................................................................................................................793
Changing the Sampling Rate........................................................................................................................................794
Sub-Sampling........................................................................................................................................................... 794
Back-O Mechanism.....................................................................................................................................................794
sFlow on LAG ports.......................................................................................................................................................795
Enabling Extended sFlow..............................................................................................................................................795
52 Simple Network Management Protocol (SNMP)..................................................................................... 796
Supported Modes..........................................................................................................................................................796
Implementation Information..........................................................................................................................................797
Conguring the Simple Network Management Protocol..........................................................................................797
Contents
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