
DS34S132 DATA SHEET
19-4750; Rev 1; 07/11
60 of 194
this section so that all “send to CPU conditions” are described together in one section (e.g. OAM BIDs, In-band
VCCV, “CPU Debug RXP PW Bundle” and error condition Discard Switches).
9.3.2.3.1 Packets with Broadcast Ethernet DA (DPC.CR1.DPBTP and DPC.CR1.DPBCP)
When an Ethernet packet is received with the Ethernet Broadcast Destination Address (DA) and the packet
includes one of the PW Header Types, the PC.CR1.DPBTP setting determines whether the packet is sent to the
CPU (0) or Discarded (1).
When an Ethernet packet is received with the Ethernet Broadcast DA and the packet doe not include one of the PW
Header Types, the PC.CR1.DPBCP setting determines whether the packet is sent to the CPU (0) or Discarded (1).
9.3.2.3.2 Packets with Unknown Ethernet DA (PC.CR7 – PC.CR19 and DPC.CR1.DPS9)
When an Ethernet packet is received and the packet includes an Ethernet DA that is not recognized (not equal to
PC.CR7 – PC.CR12, PC.CR13 – PC.CR19 or the Ethernet Broadcast Address), the PC.CR1.DPS9 setting is used
to determine whether the packet is forwarded to the CPU (0) or Discarded (1). Packets with the Ethernet Broadcast
DA are regarded as having a “known” address and are not affected by the DPS9 setting.
If the Ethernet DA registers are not programmed (PC.CR7 – PC.CR19; DA values in their default state = “0”) the
combined settings of PC.CR1.DPS9, PC.CR1.DPBTP and PC.CR1.DPBCP can be used to specify that all valid
Ethernet packets that do not use the “0” DA value are forwarded to the CPU (0) or Discarded (1).
9.3.2.3.3 PW Packets with Unknown PW-ID (DPS6)
When a packet is received with a recognized PW Header (MEF-8, MFA-8, UDP or L2TPv3) but the received PW-ID
does not match any of the programmed BIDs or OAM BIDs, the PC.CR1.DPS6 setting determines whether the
packet is forwarded to the CPU (0) or Discarded (1).
9.3.2.3.4 MEF OAM Ethernet Type Packets (MOET)
MEF OAM Ethernet Type packets are recognized when the received Ethernet Type field is equal to the
programmed PC.CR4.MOET. The PC.CR1.DPS7 setting determines whether the packet is forwarded to the CPU
(0) or Discarded (1).
9.3.2.3.5 CPU Destination Ethernet Type Packets (CDET and DPS8)
When an Ethernet packet is received with an Ethernet Type field that is equal to PC.CR20.CDET, the
PC.CR1.DPS8 setting determines whether the packet is forwarded to the CPU (0) or Discarded (1).
9.3.2.3.6 ARP Packet with Known IP Destination Address (PC.CR6 – PC.CR8 and DPS3)
When an ARP packet is received (Ethernet Type = 0x0806) with an IP Destination Address that equals one of the
IPv4 addresses programmed at PC.CR6 – PC.CR8, the PC.CR1.DPS3 setting determines whether the packet is
forwarded to the CPU (0) or Discarded (1).
9.3.2.3.7 ARP Packet with Unknown IP Destination Address (PC.CR6 – PC.CR8 and DPS0)
When an ARP packet is received (Ethernet Type = 0x0806) with an IP Destination Address that is not equal to one
of the IPv4 addresses programmed at PC.CR6 – PC.CR8, the PC.CR1.DPS0 setting determines whether the
packet is forwarded to the CPU (0) or Discarded (1).
9.3.2.3.8 Packet with Unknown Ethernet Type (DPS2)
When an Ethernet packet is received with an Ethernet Type field that is not recognized (not equal to ARP, Unicast
MPLS, Multicast MPLS, IPv4, IPv6, PC.CR20.CDET, PC.CR4.MET or PC.CR4.MOET), the PC.CR1.DPS2 setting
determines whether the packet is forwarded to the CPU (0) or Discarded (1).
9.3.2.3.9 IP Packets with Unknown IP Protocol (DPS4)
When an IP packet is received with an IP Protocol field that is not UDP or L2TPV3, the PC.CR1.DPS4 setting
determines whether the packet is forwarded to the CPU (0) or Discarded (1).
9.3.2.3.10 IP Packet with Unknown IP Destination Address (PC.CR6 – PC.CR16 and DPS1)
When an IP packet is received with an IP DA that is not equal to one of the IP addresses programmed at PC.CR6 –
PC.CR16, the PC.CR1.DPS1 setting determines whether the packet is forwarded to the CPU (0) or Discarded (1).
The IP version that is recognized is selected with PC.CR1.RXPIVS and PC.CR1.RXPDSD.