Administrator Guide

VLAN Stacking............................................................................................................................................................... 724
Important Points to Remember..............................................................................................................................725
Congure VLAN Stacking.......................................................................................................................................725
Creating Access and Trunk Ports...........................................................................................................................726
Enable VLAN-Stacking for a VLAN....................................................................................................................... 726
Conguring the Protocol Type Value for the Outer VLAN Tag...........................................................................727
Conguring Options for Trunk Ports......................................................................................................................727
Debugging VLAN Stacking..................................................................................................................................... 728
VLAN Stacking in Multi-Vendor Networks........................................................................................................... 729
VLAN Stacking Packet Drop Precedence...................................................................................................................733
Enabling Drop Eligibility............................................................................................................................................733
Honoring the Incoming DEI Value.......................................................................................................................... 733
Marking Egress Packets with a DEI Value............................................................................................................ 734
Dynamic Mode CoS for VLAN Stacking..................................................................................................................... 735
Mapping C-Tag to S-Tag dot1p Values...................................................................................................................736
Layer 2 Protocol Tunneling............................................................................................................................................737
Implementation Information....................................................................................................................................738
Enabling Layer 2 Protocol Tunneling......................................................................................................................739
Specifying a Destination MAC Address for BPDUs.............................................................................................739
Setting Rate-Limit BPDUs......................................................................................................................................739
Debugging Layer 2 Protocol Tunneling..................................................................................................................740
Provider Backbone Bridging......................................................................................................................................... 740
51 sFlow.........................................................................................................................................................741
Overview..........................................................................................................................................................................741
Implementation Information...........................................................................................................................................741
Important Points to Remember..............................................................................................................................742
Enabling and Disabling sFlow........................................................................................................................................742
Enabling and Disabling sFlow on an Interface.......................................................................................................742
Enabling sFlow Max-Header Size Extended............................................................................................................... 742
sFlow Show Commands................................................................................................................................................744
Displaying Show sFlow Global................................................................................................................................ 744
Displaying Show sFlow on an Interface.................................................................................................................744
Displaying Show sFlow on a Stack Unit................................................................................................................ 745
Conguring Specify Collectors.....................................................................................................................................745
Changing the Polling Intervals...................................................................................................................................... 745
Changing the Sampling Rate........................................................................................................................................ 746
Sub-Sampling........................................................................................................................................................... 746
Back-O Mechanism.....................................................................................................................................................746
sFlow on LAG ports....................................................................................................................................................... 747
Enabling Extended sFlow.............................................................................................................................................. 747
52 Simple Network Management Protocol (SNMP)......................................................................................748
Supported Modes.......................................................................................................................................................... 748
Implementation Information..........................................................................................................................................749
Conguring the Simple Network Management Protocol..........................................................................................749
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Contents