Concept Guide

Table Of Contents
Important Points to Remember..............................................................................................................................760
Congure VLAN Stacking.......................................................................................................................................760
Creating Access and Trunk Ports........................................................................................................................... 761
Enable VLAN-Stacking for a VLAN........................................................................................................................761
Conguring the Protocol Type Value for the Outer VLAN Tag.......................................................................... 762
Conguring Options for Trunk Ports..................................................................................................................... 762
Debugging VLAN Stacking..................................................................................................................................... 763
VLAN Stacking in Multi-Vendor Networks........................................................................................................... 764
VLAN Stacking Packet Drop Precedence...................................................................................................................768
Enabling Drop Eligibility........................................................................................................................................... 768
Honoring the Incoming DEI Value.......................................................................................................................... 768
Marking Egress Packets with a DEI Value............................................................................................................ 769
Dynamic Mode CoS for VLAN Stacking..................................................................................................................... 770
Mapping C-Tag to S-Tag dot1p Values....................................................................................................................771
Layer 2 Protocol Tunneling............................................................................................................................................772
Implementation Information....................................................................................................................................773
Enabling Layer 2 Protocol Tunneling...................................................................................................................... 774
Specifying a Destination MAC Address for BPDUs............................................................................................. 774
Setting Rate-Limit BPDUs...................................................................................................................................... 774
Debugging Layer 2 Protocol Tunneling..................................................................................................................775
Provider Backbone Bridging......................................................................................................................................... 775
51 sFlow........................................................................................................................................................ 776
Overview.........................................................................................................................................................................776
Implementation Information..........................................................................................................................................776
Important Points to Remember.............................................................................................................................. 777
Enabling and Disabling sFlow........................................................................................................................................777
Enabling and Disabling sFlow on an Interface.......................................................................................................777
Enabling sFlow Max-Header Size Extended............................................................................................................... 777
sFlow Show Commands................................................................................................................................................779
Displaying Show sFlow Global................................................................................................................................ 779
Displaying Show sFlow on an Interface.................................................................................................................779
Displaying Show sFlow on a Stack Unit................................................................................................................ 780
Conguring Specify Collectors.....................................................................................................................................780
Changing the Polling Intervals......................................................................................................................................780
Changing the Sampling Rate.........................................................................................................................................781
Sub-Sampling............................................................................................................................................................ 781
Back-O Mechanism..................................................................................................................................................... 781
sFlow on LAG ports....................................................................................................................................................... 782
Enabling Extended sFlow.............................................................................................................................................. 782
52 Simple Network Management Protocol (SNMP)......................................................................................783
Supported Modes.......................................................................................................................................................... 783
Implementation Information..........................................................................................................................................784
Conguring the Simple Network Management Protocol..........................................................................................784
Important Points to Remember..............................................................................................................................784
Contents
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