Information Technology Grimoire

Version .0.0.1

IT Notes from various projects because I forget, and hopefully they help you too.

mac madness

BMAC

BPEthX Assigned to all interfaces Unique for each SGM limited to four interfaces

VMAC

ethX-YZ unique for each site limited to 2565 for each switch

SMAC

Sync addresses unique for each Security Group

asg_mac_resolver

[Expert@MyChassis-ch0x-0x:0]# asg_mac_resolver 00:1C:7F:01:00:FE

[00:1C:7F:01:00:FE, BMAC] [Chassis ID: 1] [SGM ID: 1] [Interface: BPEth0]

[Expert@MyChassis-ch0x-0x:0]#

Notes:

The specified MAC Address comes from BPEth0 on Security Group Member #1 on the Site #1.

00:1C:7F:01:00:FE is the Magic MAC attribute, which is identified by “FE”.