Cisco 7246 - uBR Router Manual de usuario descargar pdf (Pagina 47)

show cable flap-list

Cisco uBR7246 Universal Broadband Router Feature Enhancements 47

Table 1 show cable ﬂap-list Field Descriptions

Field Description

Mac Address The customer account or street address.

Upstream The upstream port.

Ins The number of times the modem comes up and inserts itself into the

network. This count is the number of times the RF link was

reestablished more frequently than the time period conﬁgured in the

cable ﬂap-list insertion time command.

It can indicate intermittent downstream sync loss or DHCP or

modem registration problems.

Each time this count increments, the ﬂap count also increments.

Hit The number of times the modem responds to MAC layer keep alive

messages. (The minimum hit rate is once per 30 seconds. It can

indicate intermittent upstream, laser clipping, or common-path

distortion.

This count should be much higher than the Miss count. If this is not

the case, the modem is having trouble maintaining the link because

of an upstream problem.

The ﬂap count increments each time the system transitions from a

Hit to a Miss.

Miss The number of times the modem misses the MAC layer keep-alive

message. An 8% miss rate is normal for the MC11 card. It can

indicate intermittent upstream, laser clipping, or common-path

distortion.

CRC The number of upstream Cyclic Redundancy Check errors per

modem. It can indicate intermittent upstream, laser clipping, or

common-path distortion.

P-Adj The number of times the headend instructed the modem to adjust

transmit (TX) power more than the threshold conﬁgured with the

cable ﬂap-list power-adjust threshold command.

It can indicate ampliﬁer degradation, poor connections, or thermal

sensitivity.

Each time this counter increments, the ﬂap count increments.

Flap The sum of P-Adj and Ins values. Modems with high ﬂap counts

will have high SIDs and might not register.

Time The most recent time that the modem dropped the connection.

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 77 78

Sin comentarios

Cisco 7246 - uBR Router Manual de usuario Pagina 47