Riverstone Networks WICT1-12 - Manual (Page 639)

Riverstone Networks RS Switch Router User Guide Release 8.0 30-35
WAN Configuration Channelized T1, E1 and T3 Services Overview
Configuring Frame Relay over Channelized T1, E1 and T3 Interfaces
Configure Frame Relay over a Channelized T1, E1 or T3 interface as follows:
30.16.4 Bit Error Rate Testing
The Bit Error Rate Testing (BERT) functionality allows you to test a DS1 or E1 interface, or DS1 line within a DS3,
for cable and signal problems while installed in a field environment. BERT consists of sending a data pattern for a
configurable amount of time while monitoring the received data pattern. Since BERT expects to receive the same
pattern that is being transmitted, you can either configure the line in a loopback configuration or the remote-end can
be set up to send the same pattern; setting up a loopback prior to invoking BERT on a given DS1 or E1 connection is
the most common setup. BERT keeps track of the bit receive count versus the number of receive bit errors over time,
and the result is the Bit Error Rate.
The patterns available for BERT are selectable from a standard set of both pseudo-random and repetitive patterns (see
the parameters for the
port bert
command).
BERT can only be performed on a single physical or logical port. To perform a BERT test on a single port in a Multilink
bundle, the port must first be removed from the bundle.
port set t1.4.1:1 timeslots 1-4 wan-encapsulation frame-relay
port set e1.5.1:1 timeslots 1-4 wan-encapsulation frame-relay
port set t3.6.1:1 timeslots 1-4 wan-encapsulation frame-relay
frame-relay create vc port t1.4.1:1.103
frame-relay create vc port e1.5.1:1.105
frame-relay create vc port t3.6.1:1.104
frame-relay define service t1service cir 64000 bc 128000
frame-relay apply service t1service ports t1.4.1:1.103
frame-relay define service e1service cir 64000 bc 128000
frame-relay apply service e1service ports e1.5.1:1.104
frame-relay define service t3service cir 1544000 bc 2048000
frame-relay apply service t3service ports t3.6.1:1.105
interface create ip fr1 address-netmask 10.10.30.1/24 port t1.4.1:1 up
interface create ip fr2 address-netmask 10.10.40.1/24 port e1.5.1:1 up
interface create ip fr3 address-netmask 10.10.50.1/24 port t3.6.1:1 up