Datasheet
____________________________________________________ DS34S101, DS34S102, DS34S104, DS34S108
Rev: 032609 83 of 198
10.6.13.1
TDMoIP Port Number
The TDMoIP_port_num1 and TDMoIP_port_num2 configuration fields are used by the block to identify UDP/IP
TDMoIP packets. Although the chip has two of these fields, in most cases both fields should have the default value
(0x085E) as assigned by IANA for TDM-over-Packet. The UDP source
Both values are compared against the UDP_SRC_PORT_NUM or the UDP_DST_PORT_NUM of incoming
packets as specified by the TDMoIP_port_num_loc field in Packet_classifier_cfg_reg3 (see Table 10-30).
Table 10-30. TDMoIP Port Number Comparison for TDMoIP Packet Classification
TDMoIP_port_num_loc Value
Comparison
00
TDMoIP_port_num1/2 are ignored (no checking is performed)
01
TDMoIP_port_num1/2 are compared to source UDP port # of incoming packets
10
TDMoIP_port_num1/2 are compared to destination UDP port # of incoming packets
11
Reserved
10.6.13.2
Bundle Identifier Location and Width
The block determines the packet bundle identifier and its width after determining the packet type.
Table 10-31. Bundle Identifier Location and Width
Packet Type
Bundle Identifier Location
Bundle Identifier Width
MPLS
Inner label
20 bits
MEF
Inner label
20 bits
L2TPv3/IP
Session ID
32 bits
UDP/IP
Source UDP port number or destination UDP
port number, as specified by Ip_udp_bn_loc
in Packet_classifier_cfg_reg3
1-16 bits as specified by Ip_udp_bn_mask_n
in Packet_classifier_cfg_reg6.
10.6.13.3
OAM Packet Identification
The block identifies OAM packets according to one of the following criteria:
• UDP/IP-specific OAM packets: Match between the packet’s bundle identifier and one of the values (up to 8
different) configured in the OAM_Identification registers.
• VCCV OAM packets: Match between the packet’s control word bits 31:16 and a 1 to 16 bit value specified
by the combination of VCCV_oam_mask_n and VCCV_oam_value fields in Packet_classifier_cfg_reg18.
Such a match is taken into account only when OAM_ID_in_CW=1 in the Bundle Configuration Tables.
• MEF OAM packets: Match between packet Ethertype and Mef_oam_ether_type in register
Packet_classifier_cfg_reg9.
10.6.13.4
VLAN Tag Identification
A VLAN tag is identified according to one of the following criteria:
• Tag protocol identifier = 0x8100
• Tag protocol identifier = vlan_2nd_tag_identifier in Packet_classifier_cfg_reg7 (Created to support 0x9100
as a tag identifier)