Users Guide

50 Service Provider Bridging........................................................................................................................ 908
VLAN Stacking...............................................................................................................................................................908
Important Points to Remember............................................................................................................................. 909
Congure VLAN Stacking....................................................................................................................................... 910
Creating Access and Trunk Ports...........................................................................................................................910
Enable VLAN-Stacking for a VLAN........................................................................................................................ 911
Conguring the Protocol Type Value for the Outer VLAN Tag............................................................................911
Conguring Options for Trunk Ports.......................................................................................................................911
Debugging VLAN Stacking......................................................................................................................................912
VLAN Stacking in Multi-Vendor Networks............................................................................................................913
VLAN Stacking Packet Drop Precedence...................................................................................................................916
Enabling Drop Eligibility............................................................................................................................................916
Honoring the Incoming DEI Value...........................................................................................................................917
Marking Egress Packets with a DEI Value.............................................................................................................918
Dynamic Mode CoS for VLAN Stacking......................................................................................................................918
Mapping C-Tag to S-Tag dot1p Values................................................................................................................... 919
Layer 2 Protocol Tunneling........................................................................................................................................... 920
Implementation Information....................................................................................................................................922
Enabling Layer 2 Protocol Tunneling......................................................................................................................922
Specifying a Destination MAC Address for BPDUs.............................................................................................923
Setting Rate-Limit BPDUs......................................................................................................................................923
Debugging Layer 2 Protocol Tunneling..................................................................................................................924
Provider Backbone Bridging......................................................................................................................................... 924
51 sFlow........................................................................................................................................................925
Overview.........................................................................................................................................................................925
Implementation Information..........................................................................................................................................925
Important Points to Remember............................................................................................................................. 926
Enabling and Disabling sFlow....................................................................................................................................... 926
Enabling and Disabling sFlow on an Interface............................................................................................................ 926
sFlow Show Commands............................................................................................................................................... 926
Displaying Show sFlow Global................................................................................................................................ 927
Displaying Show sFlow on an Interface.................................................................................................................927
Displaying Show sFlow on a Line Card..................................................................................................................928
Conguring Specify Collectors.....................................................................................................................................928
Changing the Polling Intervals......................................................................................................................................928
Back-O Mechanism.................................................................................................................................................... 929
sFlow on LAG ports.......................................................................................................................................................929
Enabling Extended sFlow..............................................................................................................................................929
Important Points to Remember............................................................................................................................. 930
52 Simple Network Management Protocol (SNMP)...................................................................................... 931
Protocol Overview..........................................................................................................................................................931
Implementation Information..........................................................................................................................................932
Conguration Task List for SNMP............................................................................................................................... 932
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Contents