Configuring Logical Interface Properties

For a physical interface device to function, you must configure at least one logical interface on that device. For each logical interface, you must specify the protocol family that the interface supports. You can also configure other logical interface properties. These vary by Physical Interface Card (PIC) and encapsulation type, but include the IP address of the interface, and whether the interface supports multicast traffic, data-link connection identifiers (DLCIs), virtual channel identifiers (VCIs) and virtual path identifiers (VPIs), and traffic shaping.

To configure logical interface properties, you include the following statements:

unit logical-unit-number {

    accept-source-mac {

        mac-address mac-address {

            policer {

                input cos-policer-name;

                output cos-policer-name;

            }

        }

    }

    accounting-profile name;

    allow-any-vci;

    atm-scheduler-map (map-name | default);

    bandwidth rate;

    cell-bundle-size cells;

    clear-dont-fragment-bit;

    compression { 

        rtp {

            f-max-period number;

            queues [ queue-numbers ];

            port {

                minimum port-number;

                maximum port-number;

            }

        }

    }

    description text;

    dial-options {

        l2tp-interface-id name {

            (dedicated | shared);

        }

    }

    disable;

    dlci dlci-identifier;

    drop-timeout milliseconds;

    encapsulation type;

    epd-threshold cells plp1 cells;

    family {

        protocol-family-statements;

    }

    fragment-threshold bytes;

    input-vlan-map {

        pop;

        push;

        swap;

        vlan-id number;

        tag-protocol-id tpid;

    }

    interleave-fragments;

    inverse-arp; 

    minimum-links number;

    mrru bytes;

    multicast-dlci dlci-identifier; 

    multicast-vci vpi-identifier.vci-identifier; 

    multipoint;

    oam-liveness {

        up-count cells;

        down-count cells;

    }

    oam-period (disable | seconds); 

    output-vlan-map {

        pop;

        push;

        swap;

        vlan-id number;

        tag-protocol-id tpid;

    }

    passive-monitor-mode;

    peer-unit unit-number;

    point-to-point;

    service-domain (inside | outside);

    shaping { 

        (cbr rate | rtvbr peak rate sustained rate burst length |

                      vbr peak rate sustained rate burst length); 

        queue-length number;

    }

    short-sequence;

    transmit-weight number;

    (traps | no-traps); 

    trunk-bandwidth rate;

    trunk-id number;

    tunnel {

        backup-destination address;

        destination address; 

        key number;

        routing-instance {

            destination routing-instance-name;

        }

        source source-address;

        ttl number;

    }

    vci vpi-identifier.vci-identifier; 

    vpi vpi-identifier;

    vlan-id number;

    vlan-tags inner tpid.vlan-id outer tpid.vlan-id;

}

You can include these statements at the following hierarchy levels:

• [edit interfaces interface-name]
• [edit logical-routers logical-router-name interfaces interface-name]

This chapter describes the configuration of the logical interface properties:

• Specifying the Logical Interface Number
• Configuring Logical Router Interface Properties
• Adding a Logical Unit Description to the Configuration
• Configuring a Point-to-Point Connection
• Configuring a Multipoint Connection
• Configuring Accounting for the Logical Interface
• Configuring the Interface Bandwidth
• Enabling or Disabling SNMP Notifications on Logical Interfaces
• Configuring Interface Encapsulation
• Disabling a Logical Interface

For information about interface-specific logical properties, see Interface Types.

Table 13 lists statements that you can use to configure logical interfaces.

Table 13: Statements for Logical Interface Properties

Statement	Interface Types	Usage Guidelines
accept-source-mac	Gigabit Ethernet intelligent queuing (IQ) interfaces	Configuring MAC Address Filtering
accounting-profile name	All	Configuring Accounting for the Logical Interface
allow-any-vci	Asynchronous Transfer Mode (ATM) interfaces	Configuring ATM Interface Encapsulation
atm-scheduler-map (map-name | default)	ATM2 IQ interfaces	Configuring ATM2 IQ VC Tunnel CoS Components
backup-destination address	Encryption interfaces	Configuring IPSec Tunnel Redundancy
bandwidth rate	All interfaces, except multilink and aggregated	Configuring the Interface Bandwidth
cbr rate	ATM interfaces	Defining the ATM Traffic-Shaping Profile
cell-bundle-size cells	ATM2 IQ interfaces	Configuring the Layer 2 Circuit Cell-Relay Cell Maximum
clear-dont-fragment-bit	Adaptive services interfaces	Enabling Fragmentation on GRE Tunnels
compression	Voice services interfaces	Configuring Compression
description	All	Adding a Logical Unit Description to the Configuration
destination (address | routing-instance-name)	Encryption generic routing encapsulation (GRE) tunnel, and IP tunnel interfaces	Configuring an Encryption Interface, Configuring a Unicast Tunnel, and Configuring a Tunnel Interface for Routing Table Lookup
dial-options	Adaptive services interfaces on M7i routing platforms	Configuring L2TP Dialup Properties
disable	All	Disabling a Logical Interface
dlci dlci-identifier	Point-to-point interfaces with Frame Relay encapsulation	Configuring Frame Relay DLCIs
drop-timeout milliseconds	Multilink interfaces	Configuring a Drop Timeout Period
encapsulation type	All interfaces, except aggregated SONET/SDH and loopback	Configuring the Encapsulation on a Logical Interface
epd-threshold cells	ATM2 IQ interfaces	Configuring the ATM2 IQ EPD Threshold
f-max-period number	Voice services interfaces	Configuring Compression
family	All	Configuring the Protocol Family
fragment-threshold bytes	Multilink interfaces	Configuring a Fragmentation Threshold
input-vlan-map	Gigabit Ethernet IQ interfaces	Stacking and Rewriting Gigabit Ethernet IQ VLAN Tags
interleave-fragments	Link services interfaces	Configuring Link Services Delay-Sensitive Packet Interleaving
inverse-arp	Interfaces with ATM and Frame Relay encapsulation	Configuring Inverse ATM1 or ATM2 ARP and Configuring Inverse Frame Relay ARP
key number	GRE tunnel interfaces on Adaptive Services PICs	Configuring a Key Number on GRE Tunnels
l2tp-interface-id name (dedicated | shared)	Adaptive services interfaces on M7i routing platforms	Configuring L2TP Dialup Properties
mac-address mac-address	Gigabit Ethernet IQ interfaces and Gigabit Ethernet interfaces with small form-factor pluggable transceivers (SFPs) (except the 10-port Gigabit Ethernet PIC and the built-in Gigabit Ethernet port on the M7i platform)	Configuring MAC Address Filtering
minimum-links number	Multilink interfaces	Configuring Minimum Links
mrru bytes	Multilink interfaces	Configuring MRRU
multicast-dlci dlci-identifier	Point-to-multipoint Frame Relay interfaces	Configuring a Multicast-Capable Frame Relay Connection
multicast-vci vpi-identifier.vci-identifier	Point-to-multipoint ATM1 and ATM2 IQ interfaces	Configuring the ATM OAM F5 Loopback Cell Threshold
multipoint	All	Configuring a Multipoint Connection
oam-liveness	ATM1 and ATM2 IQ interfaces	Configuring the ATM OAM F5 Loopback Cell Threshold
oam-period (disable | seconds)	ATM1 and ATM2 IQ interfaces	Defining the ATM OAM F5 Loopback Cell Period
output-vlan-map	Gigabit Ethernet IQ interfaces	Stacking and Rewriting Gigabit Ethernet IQ VLAN Tags
passive-monitor-mode	SONET/SDH interfaces	Enabling Passive Monitoring on SONET/SDH Interfaces
peer-unit unit-number	Logical tunnel interfaces	Configuring a Logical Tunnel
plp1 cells	ATM2 IQ interfaces	Configuring the ATM2 IQ EPD Threshold
point-to-point	All	Configuring a Point-to-Point Connection
policer	Gigabit Ethernet IQ and Gigabit Ethernet PICs with SFPs (except the 10-port Gigabit Ethernet PIC and the built-in Gigabit Ethernet port on the M7i platform)	Configuring MAC Address Filtering
pop	Gigabit Ethernet IQ interfaces	Stacking and Rewriting Gigabit Ethernet IQ VLAN Tags
port	Voice services interfaces	Configuring Compression
push	Gigabit Ethernet IQ interfaces	Stacking and Rewriting Gigabit Ethernet IQ VLAN Tags
queue-length number	ATM1 interfaces	Configuring the ATM1 Queue Length
queues [ queue-numbers ]	Voice services interfaces	Configuring Compression
routing-instance	GRE tunnel and IP tunnel interfaces	Configuring a Unicast Tunnel and Configuring a Tunnel Interface for Routing Table Lookup
rtp	Voice services interfaces	Configuring Compression
rtvbr peak rate sustained rate burst length	ATM2 interfaces	Configuring ATM2 IQ Real-Time VBR
service-domain (inside | outside)	Adaptive services interfaces	Configuring the Interface Address and Domain
shaping	ATM1 and ATM2 IQ interfaces	Defining the ATM Traffic-Shaping Profile
short-sequence	Multilink interfaces	Configuring Sequence Format
source source-address	Encryption, GRE tunnel, and IP tunnel interfaces	Configuring an Encryption Interface, Configuring a Unicast Tunnel, and Configuring a Tunnel Interface for Routing Table Lookup
swap	Gigabit Ethernet IQ interfaces	Stacking and Rewriting Gigabit Ethernet IQ VLAN Tags
tag-protocol-id tpid	Gigabit Ethernet IQ interfaces	Stacking and Rewriting Gigabit Ethernet IQ VLAN Tags
transmit-weight number	ATM2 IQ interfaces	Configuring the ATM2 IQ Transmission Weight
(traps | no-traps)	All	Enabling or Disabling SNMP Notifications on Logical Interfaces
trunk-bandwidth rate	ATM2 IQ interfaces	Configuring Layer 2 Circuit Trunk Mode Scheduling
trunk-id number	ATM2 IQ interfaces	Configuring Layer 2 Circuit Transport Mode
ttl number	GRE tunnel and IP tunnel interfaces	Configuring a Unicast Tunnel
tunnel	Encryption, GRE tunnel, and IP tunnel interfaces	Configuring an Encryption Interface, Configuring a Unicast Tunnel, or Configuring a Tunnel Interface for Routing Table Lookup
vbr peak rate sustained rate burst length	ATM interfaces	Defining the ATM Traffic-Shaping Profile
vci vpi-identifier.vci-identifier	ATM1 and ATM2 IQ point-to-point interfaces	Configuring a Point-to-Point ATM1 or ATM2 IQ Connection
vpi vpi-identifier	ATM1 and ATM2 IQ point-to-point interfaces	Configuring a Point-to-Point ATM1 or ATM2 IQ Connection
vlan-id number	Fast Ethernet and Gigabit Ethernet interfaces	Configuring 802.1Q VLANs
vlan-tags inner tpid.vlan-id outer tpid.vlan-id	Gigabit Ethernet IQ interfaces	Stacking and Rewriting Gigabit Ethernet IQ VLAN Tags