Examples: Configuration Groups

The following examples illustrate ways to use configuration groups and inheritance:

Configure Sets of Statements

When sets of statements exist in configuration groups, all values are inherited. For example:

 [edit]
 user@host# show 
 groups {
     basic {
         snmp {
             interface so-1/1/1.0;
         }
     }
 }
 apply-groups basic;
 snmp {
     interface so-0/0/0.0;
 }
 [edit]
 user@host# show | display inheritance 
 snmp {
     ##
     ## 'so-1/1/1.0' was inherited from group 'basic'
     ##
     interface [ so-0/0/0.0 so-1/1/1.0 ];
 }

For sets that are not displayed within brackets, all values are also inherited. For example:

 [edit]
 user@host# show 
 groups {
     worldwide {
         system {
             name-server {
                 10.0.0.100;
                 10.0.0.200;
             }
         }
     }
 }
 apply-groups worldwide;
 system {
     name-server {
         10.0.0.1;
         10.0.0.2;
     }
 }
 [edit]
 user@host# show | display inheritance 
 system {
     name-server {
         10.0.0.1;
         10.0.0.2;
     ##
     ## '10.0.0.100' was inherited from group 'worldwide'
     ##
         10.0.0.100;
     ##
     ## '10.0.0.200' was inherited from group 'worldwide'
     ##
         10.0.0.200;
     }
 }

Configure Interfaces

You can use configuration groups to separate the common interface media parameters from the interface-specific addressing information. The following example places configuration data for ATM interfaces into a group called atm-options:

 [edit]
 user@host# show 
 groups {
     atm-options {
         interfaces {
             <at-*> {
                 atm-options {
                     vpi 0 maximum-vcs 1024;
                 }
                 unit <*> {
                     encapsulation atm-snap;
                     point-to-point;
                     family iso;
                 }
             }
         }
     }
 }
 apply-groups atm-options;
 interfaces {
     at-0/0/0 {
         unit 100 {
             vci 0.100;
             family inet {
                 address 10.0.0.100/30;
             }
         }
         unit 200 {
             vci 0.200;
             family inet {
                 address 10.0.0.200/30;
             }
         }
     }
 }
 [edit]
 user@host# show | display inheritance
 interfaces {
     at-0/0/0 {
         ##
         ## 'atm-options' was inherited from group 'atm-options'
         ##
         atm-options {
             ##
             ## '1024' was inherited from group 'atm-options'
             ##
             vpi 0 maximum-vcs 1024;
         }
         unit 100 {
             ##
             ## 'atm-snap' was inherited from group 'atm-options'
             ##
             encapsulation atm-snap;
             ##
             ## 'point-to-point' was inherited from group 'atm-options'
             ##
             point-to-point;
             vci 0.100;
             family inet {
                 address 10.0.0.100/30;
             }
             ##
             ## 'iso' was inherited from group 'atm-options'
             ##
             family iso;
         }
         unit 200 {
             ##
             ## 'atm-snap' was inherited from group 'atm-options'
             ##
             encapsulation atm-snap;
             ##
             ## 'point-to-point' was inherited from group 'atm-options'
             ##
             point-to-point;
             vci 0.200;
             family inet {
                 address 10.0.0.200/30;
             }
             ##
             ## 'iso' was inherited from group 'atm-options'
             ##
             family iso;
         }
     }
 }
 [edit]
 user@host# show | display inheritance | except ##
 interfaces {
     at-0/0/0 {
         atm-options {
             vpi 0 maximum-vcs 1024;
         }
         unit 100 {
             encapsulation atm-snap;
             point-to-point;
             vci 0.100;
             family inet {
                 address 10.0.0.100/30;
             }
             family iso;
         }
         unit 200 {
             encapsulation atm-snap;
             point-to-point;
             vci 0.200;
             family inet {
                 address 10.0.0.200/30;
             }
             family iso;
         }
     }
 }

Configure Peer Entities

In this example, we create a group some-isp that contains configuration data relating to another ISP. We can then insert apply-group statements at any point to allow any location in the configuration hierarchy to inherit this data.

 [edit]
 user@host# show 
 groups {
     some-isp {
         interfaces {
             <ge-*> {
                 gigether-options {
                     flow-control;
                 }
             }
         }
         protocols {
             bgp {
                 group <*> {
                     neighbor <*> {
                         remove-private;
                     }
                 }
             }
             pim {
                 interface <*> {
                     version 1;
                 }
             }
         }
     }
 }
 interfaces {
     ge-0/0/0 {
         apply-groups some-isp;
         unit 0 {
             family inet {
                 address 10.0.0.1/24;
             }
         }
     }
 }
 protocols {
     bgp {
         group main {
             neighbor 10.254.0.1 {
                 apply-groups some-isp;
             }
         }
     }
     pim {
         interface ge-0/0/0.0 {
             apply-groups some-isp;
         } 
     }
 }
 [edit]
 user@host# show | display inheritance 
 interfaces {
     ge-0/0/0 {
         ##
         ## 'gigether-options' was inherited from group 'some-isp'
         ##
         gigether-options {
             ##
             ## 'flow-control' was inherited from group 'some-isp'
             ##
             flow-control;
         }
         unit 0 {
             family inet {
                 address 10.0.0.1/24;
             }
         }
     }
 }
 protocols {
     bgp {
         group main {
             neighbor 10.254.0.1 {
                 ##
                 ## 'remove-private' was inherited from group 'some-isp'
                 ##
                 remove-private;
             }
         }
     }
     pim {
         interface ge-0/0/0.0 {
             ##
             ## '1' was inherited from group 'some-isp'
             ##
             version 1;
         }
     }
 }

Establish Regional Configurations

In this example, one group is populated with configuration data that is standard throughout the company while another group contains regional deviations from this standard.

 [edit]
 user@host# show 
 groups {
     standard {
         interfaces {
             <t3-*> {
                 t3-options {
                     compatibility-mode larscom subrate 10;
                     idle-cycle-flag ones;
                 }
             }
         }
     }
     northwest {
         interfaces {
             <t3-*> {
                 t3-options {
                     long-buildout;
                     compatibility-mode kentrox;
                 }
             }
         }
     }
 }
 apply-groups standard;
 interfaces {
     t3-0/0/0 {
         apply-groups northwest;
     }
 }
 [edit]
 user@host# show | display inheritance 
 interfaces {
     t3-0/0/0 {
         ##
         ## 't3-options' was inherited from group 'northwest'
         ##
         t3-options {
             ##
             ## 'long-buildout' was inherited from group 'northwest'
             ##
             long-buildout;
             ##
             ## 'kentrox' was inherited from group 'northwest'
             ##
             compatibility-mode kentrox;
             ##
             ## 'ones' was inherited from group 'standard'
             ##
             idle-cycle-flag ones;
         }
     }
 }

Select Wildcard Names

The combination of wildcarding and thoughtful use of names in statements gives the ability to tailor statement values.

 [edit]
 user@host# show
 groups {
     mpls-conf {
         protocols {
             mpls {
                 label-switched-path <*-major> {
                     retry-timer 5;
                     bandwidth 155m;
                     optimize-timer 60;
                 }
                 label-switched-path <*-minor> {
                     retry-timer 15;
                     bandwidth 64k;
                     optimize-timer 120;
                 }
             }
         }
     }
 }
 apply-groups mpls-conf;
 protocols {
     mpls {
         label-switched-path metro-major {
             to 10.0.0.10;
         }
         label-switched-path remote-minor {
             to 10.0.0.20;
         }
     }
 }
 [edit]
 user@host# show | display inheritance
 protocols {
     mpls {
         label-switched-path metro-major {
             to 10.0.0.10;
             ##
             ## '5' was inherited from group 'mpls-conf'
             ##
             retry-timer 5;
             #
             ## '155m' was inherited from group 'mpls-conf'
             ##
             bandwidth 155m;
             ##
             ## '60' was inherited from group 'mpls-conf'
             ##
             optimize-timer 60;
         }
         label-switched-path remote-minor {
             to 10.0.0.20;
             ##
             ## '15' was inherited from group 'mpls-conf'
             ##
             retry-timer 15;
             ##
             ## '64k' was inherited from group 'mpls-conf'
             ##
             bandwidth 64k;
             ##
             ## '120' was inherited from group 'mpls-conf'
             ##
             optimize-timer 120;
         }
     }
 }

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