How to recognise a Cisco's MAC address application? | FAQ | MAC Address Vendor Lookup
Frequently asked questions

How to recognise a Cisco's MAC address application?

Summary

Range or Prefix Application Notes
01:00:0C:00:00:00 Inter Switch Link (ISL)
01:00:0C:CC:CC:CC CDP (Cisco Discovery Protocol), VTP (VLAN Trunking Protocol) EtherType is 0x0802
01:00:0C:CC:CC:CC Port Aggregation Protocol (PAgP) SNAP HDLC Protocol Type is 0x0104
01:00:0C:CC:CC:CC Unidirectional Link Detection (UDLD) SNAP HDLC Protocol Type is 0x0111
01:00:0C:CC:CC:CC Dynamic Trunking (DTP) SNAP HDLC Protocol Type is 0x2004
01:00:0C:CC:CC:CC VLAN Trunking (VTP) SNAP HDLC Protocol Type is 0x2003
01:00:0C:CC:CC:CD Cisco Shared Spanning Tree Protocol address EtherType is 0x0802
01:00:0C:CC:CC:CD Spanning Tree PVSTP+ SNAP HDLC Protocol Type is 0x010B
01:00:0C:CD:CD:CD STP Uplink Fast SNAP HDLC Protocol Type is 0x200A
01:00:0C:CD:CD:CE VLAN Bridge SNAP HDLC Protocol Type is 0x010C
01:00:0C:DD:DD:DD CGMP (Cisco Group Management Protocol)

References

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