show interfaces
Table 18 | show interfaces | |
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Field |
| Description |
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| |
DS Data Overruns | Number of times the Cisco uBR900 series’s DMA controller had downstream data | |
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| and there were no free data PDU buffer descriptors to accept the data. |
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| |
Received MAPs | Number of times a MAP message passed all filtering requirements and was received | |
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| by the Cisco uBR900 series. |
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| |
Received Syncs | Number of times a timestamp message was received by the Cisco uBR900 series. | |
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| |
Message CRC failures | Number of times a MAC message failed a cyclic redundancy (CRC) check. | |
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| |
Header CRC failures | Number of times a MAC header failed its | |
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| is a |
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| header even in a collision environment. |
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|
Data PDUs |
| Total number of data PDUs (protocol data units) of all types received by the |
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| Cisco uBR900 series. |
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| |
DS MAC messages | Number of MAC messages received by the Cisco uBR900 series. | |
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|
|
Valid Headers |
| Number of valid headers received by the Cisco uBR900 series, including PDU |
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| headers, MAC headers, and headers only. |
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|
|
Sync losses |
| Number of times the Cisco uBR900 series lost timebase sync with the CMTS. |
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|
|
Pulse losses |
| Number of times the Cisco uBR900 series did not receive expected timestamp |
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| messages from the CMTS. |
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| |
BW request failures | Number of times the Cisco uBR900 series sent the maximum number of | |
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| for bandwidth allocation and the request was still not granted. |
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|
Information about routing and bridging protocols and filtering on the cable access router interface is displayed in the following example:
uBR924# show int cable-modem 0 crb
Bridged protocols on
Software MAC address filter on |
| ||||
Hash Len | Address | Matches | Act | Type | |
0x00: | 0 | ffff.ffff.ffff | 3877 | RCV Physical broadcast | |
0x2A: | 0 | 0900.2b01.0001 | 0 | RCV DEC spanning tree | |
0x7A: | 0 | 0010.7b43.aa01 | 573 | RCV Interface MAC address | |
0xC2: | 0 | 0180.c200.0000 | 0 | RCV IEEE spanning tree | |
0xC2: | 1 | 0180.c200.0000 | 0 | RCV IBM spanning tree | |
Table 19 describes the software MAC address filter information for the cable access router interface.
Table 19 | show interfaces |
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Field | Description |
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|
Hash | Hash key/relative position in the keyed list for this MAC address filter. |
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Len | Length of this entry to the beginning element of this hash chain. |
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|
Address | Canonical (Ethernet ordered) MAC address of this filter. |
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|
Matches | Number of received packets that match this MAC address. |
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|
