Displaying And Maintaining E1-F Interfaces; Configuring A T1-F Interface - HP MSR Router Series Configuration Manual

Step
12. Enable loopback and set the
loopback mode.
13. Set the MTU for the BRI
interface.
14. Set the keepalive transmission
interval.
15. Set the intended bandwidth
for the E1-F interface.
16. Restore the default settings for
the E1-F interface.
17. Bring up the E1-F interface.

Displaying and maintaining E1-F interfaces

Execute display commands in any view and the reset command in user view.
Task
Display information about E1-F interfaces.
Display the status of an E1-F interface.
Clear statistics for E1-F interfaces.

Configuring a T1-F interface

T1-F interfaces, fractional T1 interfaces, are simplified CT1/PRI interfaces. They are a cost-effective
alternative to CT1/PRI interfaces where T1 access does not require multiple channel sets or ISDN PRI.
A T1-F interface has the following features:
In framed mode, a T1-F interface can bind timeslots into only one channel set. In contrast, a CT1/PRI
•
interface can group and bundle timeslots randomly into multiple channel sets.
• A T1-F interface does not support PRI mode.
A T1 line is multiplexed from 24 channels. A T1 primary group frame DS1 (digital signal level- 1 )
comprises 24 DS0 (64 kbps) timeslots and 1 framing bit for synchronization, with each timeslot being 8
bits. Each primary group frame has 193 bits (24 × 8+1). Because DS1 can transmit 8000 frames per
second, its transmission speed is 1544 kbps (193 × 8 kbps).
A T1-F interface can only operate in framed mode. Timeslots 1 through 24 on it can randomly form a
channel set. For the channel set, a synchronous serial interface is created automatically. The interface
rate is n × 64 kbps or n × 56 kbps, where n is the number of bundled timeslots. The synchronous serial
interface has the same logical features as a standard synchronous serial interface. You can configure this
interface in the same way you configure a standard synchronous serial interface.
Command
fe1 loopback { local | payload |
remote }
mtu size
timer-hold seconds
bandwidth bandwidth-value
default
undo shutdown
Command
display fe1 [ serial interface-number ]
display interface serial interface-number
reset counters interface [ serial [ interface-number ] ]
30
Remarks
By default, loopback is disabled.
The default is 1500 bytes.
The default is 10 seconds.
By default, the expected
bandwidth (in kbps) is the interface
baud rate divided by 1000.
N/A
By default, an E1-F interface is up.