Chapter 4 Troubleshooting the System
Troubleshooting Using Cable Flap Lists
Table
Field | Description |
Rate exceeded DS packet | Number of downstream packets lost by this SID |
drops |
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Ratelimit BWReqDrop | Number of bandwidth requests not granted by this SID |
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Ratelimit DSPktDrop | Number of downstream packets lost by this SID |
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1st time online | Time at which the modem with this SID connected |
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Times online | Number of times the modem with this SID has connected |
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% online | Percentage of time the modem with this SID has been connected |
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Online time | The minimum, average, and maximum number of hours and |
| minutes the modem with this SID has been connected |
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Offline time | The minimum, average, and maximum number of hours and |
| minutes the modem with this SID has been disconnected |
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Show Cable QoS Profile
Following is a response to the show cable qos profile command. The display shows ToS specifications:
uBR7200#show cable qos profile
Service | Prio | Max | Guarantee | Max | Max tx | TOS | TOS | Create | B |
class |
| upstream | upstream | downstream burst | mask value | by | priv | ||
> |
| bandwidth bandwidth bandwidth |
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| enab | ||
1 | 0 | 0 | 0 | 0 | 0 | 0x0 | 0x0 | cmts(r) | no |
2 | 0 | 64000 | 0 | 1000000 | 0 | 0x0 | 0x0 | cmts(r) | no |
3 | 0 | 1000 | 0 | 1000 | 0 | 0x0 | 0x0 | cmts | no |
4 | 3 | 256000 | 0 | 512000 | 0 | 0x0 | 0x0 | cm | no |
5 | 5 | 1000000 | 0 | 10000000 | 0 | 0x0 | 0x0 | cm | no |
6 | 3 | 256000 | 0 | 512000 | 0 | 0x0 | 0x0 | cm | yes |
Note The “r” in the “Create by” column means the first two classes of service the CMTS creates are reserved for CMs that are not online.
Displays upstream packet discards, errors,
show interface
Troubleshooting Using Cable Flap Lists
The Cisco uBR7200 series universal broadband routers maintain a database of flapping cable modems to assist in locating cable plant problems. The flapping cable modem detector tracks the upstream and downstream performance of all cable modems on the network, without impacting throughput and performance, or creating additional packet overhead on the broadband network. The cable modem flap
Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
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