| 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
E1 interface. You must define at least one logical unit for an E1
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
E1 interface.
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Type a text description of the E1 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 the E1 interface.
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Type a value between 256 and 9192 bytes. The
default MTU for E1 interfaces is 1504.
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Clocking
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Specifies the transmit clock source for the E1 line.
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From the list, select one of the following:
-
internal—Services Router's
own system clock (the default)
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external—Clock received from
the E1 interface
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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 E1 interface:
-
PPP
-
Frame Relay
-
Cisco HDLC
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Enable CHAP
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Enables or disables CHAP authentication on an E1 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 E1 interface uses 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 E1 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 E1 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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| E1
Options |
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Framing Mode
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Specifies the framing mode for the E1 line.
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From the list, select one of the following:
-
g704—The default
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g704–no-crc4—G704 without
cyclic redundancy check 4 (CRC4)
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unframed—Unframed transmission
format
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Invert Data
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Enables or disables data inversion. Data inversion is normally
used only in alternate mark inversion (AMI) mode.
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- To enable, select the check box.
- To disable, clear the check box.
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Timeslots
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Specifies the number of time slots allocated to a fractional
E1 interface. By default, an E1 interface uses all the time slots.
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Type numeric values from 2 through 32. Separate
discontinuous entries with commas, and use hyphens to indicate ranges.
For example:
2,4,7–9
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Frame Checksum
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Specifies the number of bits in the frame checksum. A 32–bit
checksum provides more reliable packet verification, but is not supported
by some older equipment.
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Select 16 or 32. The
default checksum is 16.
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