Classifying Interfaces (SRC CLI)

Use the following configuration statements to define interface classification scripts:


                        
                           shared network device name interface-classifier rule name {
                           
                           target target;
                           
                           }


                        
                           shared network device name  interface-classifier rule  name  condition  name  ...


                        
                           shared network device  name  interface-classifier rule  name  script
                              {
                           
                           script-value;
                           
                           include include;
                           
                           }

A classification script can contain either a target and a condition or a script. If you do not define a script, the classifier must have both a target and a condition.

To define interface classification scripts:

From configuration mode, enter the interface classifier configuration for a device.
user@host# edit shared network device erx-node1 interface-classifier
Create a rule for the classifier. You can create multiple rules for the classifier.
[edit shared network device erx-node1 interface-classifier] user@host# edit rule rule-3
Configure either a target or a script for the rule.
- Configure the target for the rule.
  [edit shared network device erx-node1 interface-classifier rule rule-3] user@host# set target target
  
  If you configured a target for the rule, you must configure a match condition for the rule. You can create multiple conditions for the rule. See Interface Classification Conditions.
  
  [edit shared network device erx-node1 interface-classifier rule rule-3] user@host# set condition name
- Configure the script for the rule.
  [edit shared network device erx-node1 interface-classifier rule rule-3] user@host# edit script
  
  (Optional) You can specify a script target.
  
  [edit shared network device erx-node1 interface-classifier rule rule-3 script] user@host# set script-value
  
  (Optional) You can include a script that has already been created.
  
  [edit shared network device erx-node1 interface-classifier rule rule-3 script] user@host# set include include
  
  where include is a reference to an existing script that is included in the script you are configuring.
(Optional) Change the order of rules.
[edit shared network device erx-node1 interface-classifier] user@host# insert rule rule-5 before rule-4
(Optional) Rename a rule.
[edit shared network device erx-node1 interface-classifier] user@host# rename rule rule-5 to DHCP

(Optional) Verify the classifier rule configuration.

[edit shared network device erx-node1 interface-classifier rule rule-3]
user@host# show
target /sample/junose/PPP-special;
condition {
  "pppLoginName=\"*@special.com\"";
}

(Optional) Verify the interface classifier configuration.

[edit shared network device erx-node1 interface-classifier]
user@host# show
rule rule-1 {
  script "
# Use the following syntax:
#
# descr-file ::= [script] section*
# section    ::= ('[' type ']' nl conditions) | ('[*]' nl script)
# type       ::= 'a-zA-Z0-9-_'*
# nl         ::= '\\n'
# conditions ::= ((('#'|';') comment) |
#                (['&'|'|'] field-name ( '='|'=='|'!=') match) nl)*
# field-name ::= member of InterfaceObject
# match      ::= UNIX style filename matching
# script     ::= regular python script, defined functions need to be
#                  included in the list \"classify\"
#
# the section-names correspond to a PolicyList object below
# o=Policies, o=umc:
# [name] => DN: \"policyGroupName=name, o=Policies, o=umc\"
#
# Use one of the following \"field names\":
#   pppLoginName      - set to \"user@realm\", if interface is PPP
#   interfaceName     - name of the ERX Interface in CLI syntax
#   virtualRouterName - name of the VR the interface is connected to

";
}
rule rule-2 {
  script "
# apply different default policies for PPP subscribers in realm \"special.com\"
def log(obj):
    from net.juniper.smgt.sae import Main
    icc = Main.theComponentRegistry.get(\"icc.component\")
    if icc is None:
        Main.theComponentRegistry.put(\"icc.component\", [])
    else:
        icc.append(obj)
classify.append(log)
";
}
rule rule-3 {
  target /sample/junose/PPP-special;
  condition {
    "pppLoginName=\"*@special.com\"";
  }
}
rule rule-4 {
  target /sample/junose/PPP;
  condition {
    "pppLoginName!=\"\"";
  }
}
rule rule-5 {
  target /sample/junose/DHCP;
  condition {
    "interfaceName=\"fastEthernet*\"";
    "interfaceName=\"atm*/*.*\"";
  }
}

Interface Classification Conditions

Use the fields in this section to define interface classification conditions.

broadcastAddr

Interface broadcast address.

Value—Valid broadcast address format

Example—broadcastAddr.hostAddress=“ 255.255.255.255”

ifAlias

Description of an interface.

Value—Interface description that is configured on the router. For JUNOSe routers, it is the description configured with the interface description command.

Example—ifAlias=“ 1st pppoe int”

ifDesc

Alternate name of the interface that is used by SNMP. This name is a system-generated name.

Value
- On a JUNOSe router, the format of the description is
  ip<slot>/<port>.<subinterface>
- On the JUNOS routing platform, ifDesc is the same as interfaceName.

Example—ifDesc=“ IP3/1.1”

interfaceName

Name of the interface.

Value
- Name of the interface in your router CLI syntax
- FORWARDING_INTERFACE for routing instance (used by traffic mirroring)

Example—For JUNOSe routers: interfaceName=“ fastethernet6/0.1”

For JUNOS routing platforms: interfaceName=“ fe-0/1/0.0”

For forwarding interface: interfaceName=“ FORWARDING_INTERFACE”

ipAddress

Interface IP address.

Value—Valid IPv4 IP address format

Example—ipAddress=“ 10.10.30.1”

ipMask

Interface network mask.

Value—Valid IPv4 IP network mask format

Example—ipMask=“ 255.255.255.255”

mtu

Maximum transfer unit configured on the interface.

Value—32-integer value

Example—mtu=“ 1492”

nasPortId

Port identifier of an interface.

Value—Includes interface name and additional layer 2 information

Example—nasPortId=“ fastEthernet 3/1” (There is a space between fastEthernet and slot number 3/1 in the nasPortId.)

pppLoginName

Value—Login name in the format username@domain

Example—pppLoginName=“ pebbles@virneo.net”

radiusClass

RADIUS class attribute.

Value—RADIUS class name

Example—radiusClass=“ Premium”

serviceBundle

Content of the vendor-specific RADIUS attribute for the service bundle.

Value—Name of a service bundle

userIpAddress

Subscriber IP address (PPP only).

Value—valid IPv4 address

Example—userIpAddress=“ 192.168.30.15”

virtualRouterName

Name of the virtual router or routing instance.

Value—For JUNOSe routers: name of the virtual router in the format vrname@hostname
For JUNOS routing platforms: name of the routing instance

Example—virtualRouterName=“ default@erx5”

Classifying Interfaces (SRC CLI)

Interface Classification Conditions

Published: 2009-09-13