Juniper JUNOSE 11.2, Configuration Manual

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router provides the ability to configure a VLAN subinterface with distinct profile
assignments for each encapsulation type supported by the
vlan auto-configure command.
Each profile typically contains configuration attributes for the expected encapsulation,
in addition to attributes for other higher-interface layers through IP. If your configuration
of upper layers is intended to be different depending on which incoming encapsulation
is received by the subinterface, configure and assign separate profiles for each
encapsulation type. If your configuration of upper layers is the same for more than one
encapsulation type, configure one profile and assign it for those encapsulation types.
Profile Characteristics
Currently, profiles support bridged Ethernet, IP, IPv6, L2TP, Multilink PPP, PPP, PPPoE,
and VLANs. You create a profile with a specific set of characteristics. You then assign
the profile to multiple interfaces instead of creating separate interfaces with identical
attributes. After you create a profile, you can assign it to static ATM 1483, static PPP, or
static VLAN major interfaces on different devices.
Bridged Ethernet Characteristics
A profile can contain the following bridged Ethernet characteristic:
• mtu—Sets the maximum allowable size, in bytes, of the maximum transmission unit
(MTU) for dynamic bridged Ethernet interfaces
IP Characteristics
A profile can contain one or more of the following IP characteristics:
•
access-routes—Enables the creation of host access routes on an interface
•
address—Configures an IP address on an interface
• auto-configure ip-subscriber—Configures a primary IP interface to enable dynamic
creation of subscriber interfaces
•
auto-detect ip-subscriber—Enables packet detection on the router and specifies that
IP automatically detects packets that do not match any entries in the demultiplexer
table
• directed-broadcast—Enables directed broadcast forwarding
•
filter-options all—Filters out packets that include IP options
•
igmp—Configures an IGMP interface
• ignore-df-bit—Specifies that the don’t-fragment bit is ignored
• inactivity-timer—Configures an inactivity timer value for IP interfaces
•
inspection—Associates an inspection list to the interface for firewalling
•
mtu—Configures the MTU for a network
• nat—Configures the interface as inside or outside for Network Address Translation
(NAT)
•
policy—Assigns a policy to the ingress or egress of an interface
Copyright © 2010, Juniper Networks, Inc. 560
JunosE 11.2.x Link Layer Configuration Guide