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show pxf cable
0
1
2
Router#
The following example shows a typical display for the show pxf cable multicast-echo command for a
particular multicast address:
Router# show pxf cable multicast-echo 230.1.1.1
Src
230.1.1.1
Router#
Table 4-3
Table 4-3
Field
Src
I/F
SFID
DS Jib Header
Cisco Broadband Cable Command Reference Guide
4-56
Cable5/0/0
Cable7/0/0
Cable7/0/1
I/f
SFID
Cable7/0/1
16385
describes the fields shown by the show pxf cable multicast-echo command:
show pxf cable multicast-echo Field Descriptions
Description
Multicast address being displayed.
Cable interface being used for this multicast address.
Displays the service flow ID (SFID) for this particular multicast address.
Shows the bitmask used for this multicast address on the PRE's MAC-layer
processor. The bitmask consists of ten hexadecimal bytes in the following
format (reading left to right, from most significant to least significant bit):
Bytes 9:8 = Specifies the key index for the downstream.
•
Bytes 7:6 = Identifies the rule number used for packet header
•
suppression (if enabled)
Byte 5 = Bitmask that defines the type of packet transmitted:
•
Bit 4 = 1 if padding CRC for data packets, 0 if not padding the CRC
–
Bit 3 = 1 if inserting an extended header (EH) for PHS processing
–
Bit 2 = 1 if inserting an extended header (EH) for BPI+ processing
–
Bits 1:0 = Specifies the packet type:
–
00 = Data packet
01 = MAC management message for transmitted packets
10 = Internal MAP message on upstream
11 = Special packet
Byte 4 = Bitmask that identifies the type of map control and key
•
sequence for the packet:
Bits 6:4 = Destination upstream for the MAP message
–
Bits 3:0 = BPI Key Sequence number
–
Bytes 3:2 = Index to obtain the downstream modem statistics.
•
Byte 1 = Specifies the assumed minimum size of a packet data unit.
•
Multiply this byte by 4 to get the actual minimum size in bytes.
Byte 0 = Specifies the DOCSIS header size, with a maximum value of
•
0xE0 (248 decimal).
Chapter 4
DS Jib Header
0x0000 0000 1000 0001 1000
Commands for the Cisco uBR10012 Router
Packets
Bytes
321
2160
OL-1581-08
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