| Logical
Interfaces |
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Add logical interfaces
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Defines one or more logical units that you connect to this physical
serial interface. You must define at least one logical unit for a
serial interface. You can define multiple units if the encapsulation
type is Frame Relay.
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Click Add.
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Logical Interface Description
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(Optional) Describes the logical interface.
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Type a text description of the logical interface to more clearly
identify it in monitoring displays.
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IPv4 Addresses and Prefixes
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Specifies one or more IPv4 addresses for the interface.
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- Type one or more IPv4 addresses and prefixes.
For example:
10.10.10.10/24
- Click Add.
- Click OK.
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Physical Interface Description
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(Optional) Adds supplementary information about the physical
serial interface.
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Type a text description of the serial interface to more clearly
identify it in monitoring displays.
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MTU (bytes)
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Specifies the maximum transmission unit size for a serial interface.
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Type a value between 256 and 9192 bytes. The
default MTU for serial interfaces is 1504.
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Per unit scheduler
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Enables scheduling on logical interfaces.
Allows you to configure multiple output queues on a logical
interface and associate an output scheduler and shaping rate with
the queues.
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- To enable scheduling, select the check box.
- To disable scheduling, clear the check box.
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| Encapsulation |
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Encapsulation
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Specifies the encapsulation type for traffic on the interface.
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From the list, select the encapsulation for this serial interface:
-
PPP
-
Frame Relay
-
Cisco HDLC
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Enable CHAP
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Enables or disables CHAP authentication on a serial interface
with PPP encapsulation only.
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- To enable CHAP, select the check box.
- To disable CHAP, clear the check box.
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| CHAP
Local Identity (available if CHAP is enabled) |
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Use System Host Name
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Specifies that the serial interface use the Services Router's
system hostname in CHAP challenge and response packets.
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- To enable, select the check box (the default).
- To disable, clear the check box.
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Local Name
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If Use System Host Name is disabled, specifies the local name
for CHAP to use.
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Type a local name for this serial interface.
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CHAP Peer Identity
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Identifies the client or peer with which the Services Router communicates
on this serial interface.
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Type the CHAP client name.
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CHAP Secret
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Specifies the secret password for CHAP authentication, known
to both sides of the connection.
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Type a password that is known to the other side of the connection.
Use a combination of letters and numbers that is difficult for others
to guess.
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| Serial
Options |
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Clocking Mode
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Specifies the clock source to determine the timing on serial
interfaces.
If you use an externally timed clocking mode—dce or loop—long cables might introduce
a phase shift of DTE-transmitted clock and data. At high speeds, this
phase shift might cause errors.
Inverting the transmit clock corrects the phase shift, thereby
reducing error rates. By default, the transmit clock is not inverted.
To invert the transmit clock, do either of the following:
- In the J-Web configuration editor, set the Transmit clock
value to invert on the Interfaces>interface-name> Serial options page.
- In the CLI configuration editor, include the transmit-clock
invert statement at the [edit interfaces se-pim/0/port serial-options] hierarchy level.
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From the list, select one of the following timing sources:
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dce—Uses a transmit clock generated
by the data circuit-terminating equipment (DCE) for the Services Router's
DTE.
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internal—Uses the Services Router's
internal clock.
-
loop—Uses the DCE's or DTE's
receive clock (the default).
For X.21 serial interfaces, you must use the loop clocking mode.
When the Services Router is functioning as DTE, you must use the dce clocking mode for all interfaces except X.21
serial interfaces.
When the Services Router is functioning as DCE, we recommend using
the internal clocking mode for all interfaces.
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Clock Rate
Note:
RS-232 serial interfaces cannot function error-free with a clock
rate greater than 200 KHz.
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Specifies the line speed in kilohertz or megahertz for serial
interfaces that use the DTE clocking mode.
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From the list, select one of the following clock rates:
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1.2 KHz
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2.4 KHz
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9.6 KHz
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19.2 KHz
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38.4 KHz
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56.0 KHz
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64.0 KHz
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72.0 KHz
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125.0 KHz
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148.0 KHz
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250.0 KHz
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500.0 KHz
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800.0 KHz
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1.0 MHz
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1.3 MHz
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2.0 MHz
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4.0 MHz
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8.0 MHz
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