ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 63

• Manufacturer Part Number: ibm3206k0424
• Description: Ibm Processor For Network Resources
• Manufacturer: ETC-unknow

Preliminary
Transmit and Receive Packet Header Field Descriptions
pnr25.chapt03.01
August 14, 2000
bit2 proto_chksm_flags
AAL5_user_byte2 (rx)
AAL5_user_byte2 (tx)
bit1 memchk_status
bit2 ip_chksm_flags
bit1 badlen_status
bit1 badcpi_status
bit1 badcrc_status
bit1 toobig_status
bit1 fabort_status
cell_loss_priority
bit1 route_status
bit1 done_status
bit1 error_status
rx_atm_header
bit16 rx_label
EFCT_status
buffer_length
buffer_offset
Field Name
lc_address
host_data
This bit is used on both transmit and receive:
Transmit - If this bit is set, the EFCI bit in the ATM cell header will be set for each cell in this packet.
Receive - This bit contains the ORed EFCI bits across all the cells that comprised this packet if this LCD is
using AAL5.
This bit is used on both transmit and receive:
Transmit -If this bit is set, the cell loss priority bit in the ATM cell header will be set for each cell in this packet
Receive - This bit contains the ORed cell loss priority bits across all the cells that comprised this packet if this
LCD is using AAL5.
This field contains the offset into the buffer where the data starts.
This field contains the length of the packet.
This is the address of the logical connection descriptor on which this packet was received.
On reception, the four-byte ATM header (no HEC) is copied from the first and last cell into this area. This is an
optional header word.
This field contains the value to be sent in the user bytes, one and two, in the last cell of an AAL5 packet if
INTST is configured for two-user byte. The normal one-byte AAL5 user byte field is not used.
This field contains the AAL5 user bytes, one and two, in the last cell of an AAL5 packet if INTST is configured
for two-user byte. The normal one-byte AAL5 user byte field is not filled in. This is an optional packet header
word.
This field is written with "RA" in ASCII (0x5241) to signal that this buffer was used by RAALL.
This field contains the IP checksum status if enabled. The possible values are:
00
01
10
11
This field contains the protocol checksum status if enabled. The possible values are:
00
01
10
11
Indicates the current packet exceeded the maximum packet size.
Indicates the current packet had a memory check (real size exceeded or virtual error).
Indicates the current packet was aborted (AAL5 forward abort).
Indicates the current packet had a bad AAL5 length in the trailer.
Indicates the current packet had a bad AAL5 CPI field (not zero).
Indicates the current packet had a bad AAL5 CRC.
This bit is written when the packet is completed if it is internally routed.
This bit is written when the packet is completed if an error condition occurs.
This bit is written when the packet is completed. It can be used when thresholding.
This is an optional word that can be copied from the LCD to the packet header.
Not checked
Good
Bad
Unknown
Not checked
Good
Bad
Unknown
Field Description
(Page 2 of 3)
IBM Processor for Network Resources
IBM3206K0424
Page 63 of 676
Packet Header