The main board identifier, which can uniquely identify a board type. It is an encoded octet string with the following meaning: octet 0 - octet string format version, which identifies the format of this string. If format version octet has the value 2, the octets after the version octet have the following meaning: octet 1 - product type: BI_WG 0x57 BI_BB 0x42 BI_NI 0x4E NI_M4 0x4D BI_SLB 0x53 octet 2 - module type: MASTER_FIBER_8G 0x0 MASTER_FIBER_4G 0x1 MASTER_COPPER_16 0x2 SLAVE_FIBER_4G 0x3 FI_MASTER_FIBER_2G 0x4 FI_MASTER_FIBER_4G 0x5 MASTER_COPPER_8G 0x6 FI_MASTER_FIBER_8G 0x7 SLAVE_FIBER_8G 0x8 MASTER_COPPER_12_2 0x9 SLAVE_COPPER_24 0xA FI_SLAVE_COPPER_24 0xB SLAVE_100FX_8 0xD SLAVE_100FX_16 0xC SLAVE_COPPER_8G 0xE SLAVE_COPPER_16_2 0xF STACK_FIBER_8G 0x10 STACK_COPPER_8G 0x11 MASTER_FIBER_2G 0x12 SLAVE_100FX_24 0x13 MASTER_FIBER_0G 0x14 POS_622M 0x15 POS_155M 0x16 SLAVE_FIBER_2G 0x17 SLAVE_COPPER_2G 0x18 FI_SLAVE_FIBER_2G 0x19 FI_SLAVE_FIBER_4G 0x1A FI_SLAVE_FIBER_8G 0x1B FI_SLAVE_COPPER_8G 0x1C FI_MASTER_COPPER_8G 0x1D POS_155M2P 0x1E FI_MASTER_COPPER_4G 0x1F FI_MASTER_COPPER_2G 0x20 MASTER_COPPER_4G 0x21 MASTER_COPPER_2G 0x22 MASTER_M4_8G 0x23 MASTER_M4_4G 0x24 MASTER_M4_2G 0x25 MASTER_M4_0G 0x26 MASTER_M5_0G 0x27 POS_2488M 0x28 SLAVE_M5_0G 0x29 POS_N2488M 0x2A STACK_IPC_48_2 0x2B SLAVE_NPA_FIBER_4G 0x2C ATM_2PORT 0x2D ATM_4PORT 0x2E SLAVE_FIBER_10G 0x2F SLAVE_JC_48E 0xC3 SLAVE_JC_48T 0xC4 MASTER_JC_M4_8G 0xC5 SLAVE_JC_8G 0xC6 SLAVE_JC_B16GF 0xC8 MASTER_JC_B2404 0xC9 SLAVE_JC_B16GC 0xCA SLAVE_JC_B24FX 0xCE octet 3 - processor type, PVR_M603=3, PVR_M604=4, PVR_M603E=6, PVR_M603EV=7, PVR_M750=8, PVR_M604E=9 octet 4 to octet 5 - processor speed in MHz octet 6 - MAC type: MAC_NONE=0 MAC_SEEQ_10_100=1, MAC_DEC_10_100=2, MAC_3COM_10_100=3, MAC_X10GMAC_10000=4, MAC_SEEQ_1000=5, MAC_GMAC_1000=6, MAC_VLSI_1000=7, octet 7 - PHY type, PHY_NONE=0, PHY_QSI=1, PHY_BROADCOM=2, PHY_ICS=3, PHY_NATIONAL=4, PHY_LEVEL1=6, PHY_BROADCOM_10_100=7, PHY_LEVEL24=8, PHY_BROADCOM_10000=9 octet 8 - port type, COPPER=0, FIBER=1 octet 9 - fiber port type, NONFIBER=0, SX_FIBER=1, LX_FIBER=2, LHX_FIBER=3 octet 10 to octet 13 - DRAM size in KBytes octet 14 to octet 17 - boot flash size in KBytes octet 18 to octet 21 - code flash size in KBytes octet 22 to octet 27 - serial number. octet 28 - chassis backplane type. chassis4000 = 0x00 chassis8000 = 0x04 chassis15000 = 0x05 Turbo8 = 0x07 (stack2) FastIron2 = 0x06 (stack1)