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Supported Platforms

Enabling ILMI for Cell Relay

The Junos OS supports standard AAL5 and three Layer 2 circuit transport modes: Layer 2 circuit AAL5, Layer 2 circuit cell-relay, and Layer 2 circuit trunk transport mode.

Integrated local management interface (ILMI) is supported on standard AAL5 interfaces, regardless of encapsulation. To enable ILMI on interfaces with cell-relay encapsulation, you must configure an ATM2 IQ PIC to use Layer 2 circuit trunk transport mode. ILMI is not supported with cell-relay encapsulation when the ATM2 IQ PIC is configured with Layer 2 AAL5 or Layer 2 circuit cell-relay transport mode, as shown in as shown in Table 1.

Layer 2 circuit cell-relay trunk mode is not supported on ATM OC48 PICs.

Table 1: ILMI Support by Encapsulation Type

Encapsulation Type

ILMI Support

Standard AAL5, with any encapsulation type

Yes

Layer 2 circuit AAL5 mode

No

Layer 2 circuit cell-relay mode

No

Layer 2 circuit trunk mode

Yes

For more information about Layer 2 circuit transport modes, see Configuring Layer 2 Circuit Transport Mode.

To configure ILMI on an interface with cell-relay encapsulation, include the following statements:

[edit chassis fpc slot-number pic pic-number]atm-l2circuit-mode trunk trunk;[edit interfaces at-fpc/pic/port]encapsulation atm-ccc-cell-relay;
atm-options {ilmi;pic-type atm2;}
unit logical-unit-number {trunk-id number;}

For more information about ILMI, see Configuring Communication with Directly Attached ATM Switches and Routers.

Example: Enabling ILMI for Cell Relay

On an ATM2 IQ PIC with Layer 2 circuit trunk transport mode, enable ILMI on an interface with cell-relay encapsulation:

[edit chassis]
fpc 0 {pic 1 {atm-l2circuit-mode trunk uni;}}
[edit interfaces]
at-0/0/0 {encapsulation atm-ccc-cell-relay;atm-options {pic-type atm2;ilmi;}}

Published: 2013-07-30

Supported Platforms

Published: 2013-07-30