Datasheet

____________________________________________________ DS34T101, DS34T102, DS34T104, DS34T108
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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 Comparis
on
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 r
egisters.
 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 an
d 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 (Cre
ated to support 0x9100
as a tag identifier)