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EXEC Privilege mode
copy running-config startup-config reload
3
Map C-Tag dot1p values to a S-Tag dot1p value.
INTERFACE mode
vlan-stack dot1p-mapping c-tag-dot1p values sp-tag-dot1p value
Separate C-Tag values by commas. Dashed ranges are permitted.
Dynamic Mode CoS overrides any Layer 2 QoS configuration in case of conflicts.
NOTE:
Because dot1p-mapping marks and queues packets, the only remaining applicable QoS
configuration is rate metering. You may use Rate Shaping or Rate Policing.
Layer 2 Protocol Tunneling
Spanning tree bridge protocol data units (BPDUs) use a reserved destination MAC address called the bridge
group address, which is 01-80-C2-00-00-00.
Only spanning-tree bridges on the local area network (LAN) recognize this address and process the BPDU.
When you use VLAN stacking to connect physically separate regions of a network, BPDUs attempting to
Service Provider Bridging
1027
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Troubleshooting
