Cisco UBR904 Troubleshooting Guide - Page 28

show controllers cable-modem lookup-table

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Command Reference show controllers cable-modem lookup-table To display the mini-slot lookup table inside a cable modem, use the show controllers cable-modem lookup-table command in privileged EXEC mode. show controllers cable-modem number lookup-table Syntax Description number Controller number inside the cable modem. Command Mode Privileged EXEC Usage Guidelines This command first appeared in Cisco IOS Release 11.3 NA. This command shows the details of the lookup table. The driver uses this table to convert the size of a packet that the cable modem wants to transmit into a bandwidth request to the CMTS in mini-slots. The contents of this table are affected by the upstream symbol rate that is negotiated between the CMTS and the cable modem. Use this table to look up the packet size and determine how many mini-slots will be needed. Examples The lookup table is displayed in the following example: uBR904# show controllers cable-modem 0 lookup-table Max Burst Size (minislots) = 0x6 Max Burst Length (bytes) = 0x4B PHY Overhead Lookup Table: 000: 010: 020: 030: 040: 050: 060: 070: 080: 090: 0A0: 0B0: 0C0: 0D0: 0E0: 0F0: 100: 110: 120: 130: 140: 150: 160: 01 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 28 Cisco IOS Release 12.0(3)T

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Command Reference
28
Cisco IOS Release 12.0(3)T
show controllers cable-modem lookup-table
To display the mini-slot lookup table inside a cable modem, use the
show controllers cable-modem
lookup-table
command in privileged EXEC mode.
show controllers cable-modem
number
lookup-table
Syntax Description
Command Mode
Privileged EXEC
Usage Guidelines
This command first appeared in Cisco IOS Release 11.3 NA.
This command shows the details of the lookup table. The driver uses this table to convert the size of
a packet that the cable modem wants to transmit into a bandwidth request to the CMTS in mini-slots.
The contents of this table are affected by the upstream symbol rate that is negotiated between the
CMTS and the cable modem.
Use this table to look up the packet size and determine how many mini-slots will be needed.
Examples
The lookup table is displayed in the following example:
uBR904#
show controllers cable-modem 0 lookup-table
Max Burst Size (minislots) = 0x6
Max Burst Length (bytes) = 0x4B
PHY Overhead Lookup Table:
000:
01 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06
010:
06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06
020:
06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06
030:
06 06 06 06 06 06 06 06 06 06 06 06 06 06 06 06
040:
06 06 06 06 06 06 06 06 06 06 06 06 10 10 10 10
050:
10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
060:
10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
070:
10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
080:
10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
090:
10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
0A0:
10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
0B0:
10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
0C0:
10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
0D0:
10 10 10 10 10 10 10 10 10 10 10 10 10 1F 1F 1F
0E0:
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F
0F0:
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F
100:
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F
110:
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F
120:
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F
130:
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F
140:
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F
150:
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F
160:
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F
number
Controller number inside the cable modem.