show interface cable-modem

The following example displays the number of packets and each protocol type passing through the cable modem interface:

uBR904# show int cable-modem 0 accounting

cable-modem0

 

 

 

 

Protocol

Pkts In

Chars In

Pkts Out

Chars Out

IP

545

185502

159

90240

Trans. Bridge

3878

964995

12597

1611142

ARP

73

3066

86

4128

MIB counters on the cable interface are displayed in the next example:

uBR904# show int cable-modem 0 counters

Cable specific counters:

 

Ranging requests sent

:

50982

Downstream FIFO full

:

0

Re-requests

:

7277

DS MAC Message Overruns:

0

DS Data Overruns

:

0

Received MAPs

:

254339485

Received Syncs

:

53059555

Message CRC failures

:

0

Header CRC failures

:

1394

Data PDUs

:

5853

DS MAC messages

:

307861745

Valid Headers

:

307869065

Sync losses

:

0

Pulse losses

:

1

BW request failures

:

6

Routing and bridging information on the cable modem interface is displayed in the next example:

uBR904# show int cable-modem 0 crb

cable-modem0

Bridged protocols on cable-modem0: ip

Software MAC address filter on cable-modem0

 

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

soho5#show

int cable-modem 0 type ?

 

 

ethernet

Show ethernet vlan type

 

 

trbrf

 

Show BRF tokenring vlan

type

 

Related Commands

show controller cable-modem

show controller cable-modem bpkm show controller cable-modem des show controller cable-modem filters show controller cable-modemlookup-table show controller cable-modem mac

show controller cable-modem phy show controller cable-modem tuner

Troubleshooting Tips for the Cisco uBR904 Cable Modem 41

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Cisco Systems manual Show interface cable-modem, UBR904# show int cable-modem 0 accounting, Arp

UBR904 specifications

The Cisco UBR904 is a versatile broadband access device designed to deliver high-speed internet and data services in various deployment scenarios, particularly suitable for cable operators and service providers. This device allows operators to provide broadband services over a wide area, utilizing advanced technologies to ensure reliability and performance.

One of the key features of the UBR904 is its capability to support multiple channels for upstream and downstream communication, allowing for greater bandwidth and improved network performance. With its integrated DOCSIS (Data Over Cable Service Interface Specification) compliance, the UBR904 enables operators to leverage existing coaxial cable infrastructures to deliver data services efficiently. This makes it an ideal choice for operators looking to expand their service offerings without the need for extensive infrastructure changes.

Equipped with a powerful processor and ample memory, the UBR904 is designed for high throughput and low latency, supporting IP data services, voice services, and video on demand. It utilizes advanced modulation techniques and error correction algorithms that enhance data transmission efficiency and reliability. This results in a robust platform capable of meeting the demands of high-density areas while accommodating future growth.

The UBR904 also features flexible management capabilities. It includes support for SNMP (Simple Network Management Protocol), enabling operators to monitor and manage network performance effectively. The device can be easily configured through a graphical user interface or command-line interface, providing system administrators with the tools needed for straightforward deployment and maintenance.

In addition to its core functionalities, the UBR904 integrates security features to protect network traffic and ensure user data integrity. This includes capabilities for secure tunneling and access control lists, which enhance the security of the broadband connection.

Furthermore, the Cisco UBR904 is designed with scalability in mind. Operators can easily scale their networks by adding additional modules or interfaces as demand grows. This ensures that the UBR904 can meet the evolving needs of service providers without necessitating a complete hardware overhaul.

In summary, the Cisco UBR904 is a robust, feature-rich broadband access device that combines high performance, advanced technologies, and scalability, making it an excellent choice for operators looking to deliver high-speed internet and data services across diverse environments. Its ease of use and extensive management features further enhance its appeal, positioning it as a key player in the broadband access market.