Administrator Guide

50 Service Provider Bridging.........................................................................................................................912
VLAN Stacking................................................................................................................................................................912
Important Points to Remember.............................................................................................................................. 913
Congure VLAN Stacking....................................................................................................................................... 914
Creating Access and Trunk Ports...........................................................................................................................914
Enable VLAN-Stacking for a VLAN........................................................................................................................915
Conguring the Protocol Type Value for the Outer VLAN Tag...........................................................................915
Conguring Options for Trunk Ports......................................................................................................................915
Debugging VLAN Stacking......................................................................................................................................916
VLAN Stacking in Multi-Vendor Networks............................................................................................................917
VLAN Stacking Packet Drop Precedence.................................................................................................................. 920
Enabling Drop Eligibility........................................................................................................................................... 920
Honoring the Incoming DEI Value...........................................................................................................................921
Marking Egress Packets with a DEI Value............................................................................................................ 922
Dynamic Mode CoS for VLAN Stacking.....................................................................................................................922
Mapping C-Tag to S-Tag dot1p Values...................................................................................................................923
Layer 2 Protocol Tunneling........................................................................................................................................... 924
Implementation Information....................................................................................................................................926
Enabling Layer 2 Protocol Tunneling......................................................................................................................926
Specifying a Destination MAC Address for BPDUs............................................................................................. 927
Setting Rate-Limit BPDUs...................................................................................................................................... 927
Debugging Layer 2 Protocol Tunneling..................................................................................................................928
Provider Backbone Bridging......................................................................................................................................... 928
51 sFlow........................................................................................................................................................929
Overview.........................................................................................................................................................................929
Implementation Information..........................................................................................................................................929
Important Points to Remember............................................................................................................................. 930
Enabling and Disabling sFlow....................................................................................................................................... 930
Enabling and Disabling sFlow on an Interface............................................................................................................ 930
sFlow Show Commands............................................................................................................................................... 930
Displaying Show sFlow Global.................................................................................................................................931
Displaying Show sFlow on an Interface................................................................................................................. 931
Displaying Show sFlow on a Line Card..................................................................................................................932
Conguring Specify Collectors.....................................................................................................................................932
Changing the Polling Intervals......................................................................................................................................932
Back-O Mechanism.................................................................................................................................................... 933
sFlow on LAG ports.......................................................................................................................................................933
Enabling Extended sFlow..............................................................................................................................................933
Important Points to Remember............................................................................................................................. 934
52 Simple Network Management Protocol (SNMP)..................................................................................... 935
Protocol Overview.........................................................................................................................................................935
Implementation Information..........................................................................................................................................936
Conguration Task List for SNMP...............................................................................................................................936
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