The aggregated multiservices (AMS) interface configuration
in Junos OS enables you to combine services interfaces from multiple
PICs to create a bundle of interfaces that can function as a single
interface. You identify the PIC that you want to act as the backup.
- Create an aggregated multiservices interface and add member interfaces.
Starting in
Junos OS Release 19.3R2, an MX-SPC3 Next Gen Services AMS interface can have up
to 14 member interfaces with a maximum of 7 MX-SPC3 services cards with up to 2
PICs on each card. Starting with Junos OS Release 16.2, an MS-MPC AMS interface
can have up to 36 member interfaces. In Junos OS Release 16.1 and earlier, an
AMS interface can have a maximum of 24 member interfaces.
Note:
The member interface format is
mams-a/b/0, where
a is the Flexible PIC Concentrator (FPC) slot
number and b is the PIC slot number.
[edit interfaces]
user@host# set interface-name load-balancing-options member-interface mams-a/b/0
user@host# set interface-name load-balancing-options member-interface mams-a/b/0
For example on an MS-MPC, which can have up to four PICs:
[edit interfaces]
user@host# set ams1 load-balancing-options member-interface mams-1/1/0
user@host# set ams1 load-balancing-options member-interface mams-1/2/0
For example on an MX-SPC3, which can have up to two PICs:
[edit interfaces]
user@host# set ams1 load-balancing-options member-interface mams-1/0/0
user@host# set ams1 load-balancing-options member-interface mams-1/1/0
- Configure logical units for the AMS interface.
[edit interfaces]
user@host# set interface-name unit logical-unit-number family family
user@host# set interface-name unit logical-unit-number family family
For example:
[edit interfaces]
user@host# set ams1 unit 1 family inet
user@host# set ams1 unit 2 family inet6
- Configure member failure options.
[edit interfaces interface-name]
user@host# set load-balancing-options member-failure-options drop-member-traffic rejoin-timeout seconds
user@host# set load-balancing-options member-failure-options drop-member-traffic enable-rejoin
For example:
[edit interfaces ams1]
user@host# set load-balancing-options member-failure-options drop-member-traffic rejoin-timeout 1000
user@host# set load-balancing-options member-failure-options drop-member-traffic enable-rejoin
- Configure the preferred backup.
[edit interfaces interface-name]
user@host# set load-balancing-options high-availability-options many-to-one preferred-backup preferred-backup
For example:
[edit interfaces ams1]
user@host# set load-balancing-options high-availability-options many-to-one preferred-backup mams-1/2/0
Note: This step is not applicable to the Next Gen Services MX-SPC3
services card in the MX240, MX480 or MX960 chassis.
If the AMS interface has more than 24 member interfaces, set
the service PIC boot timeout value to 240 or 300 seconds for every
services PIC on the MX Series router. We recommend that you use a
value of 240.
Note: Starting with Junos OS Release 16.2, an AMS interface
can have up to 36 member interfaces. In Junos OS Release 16.1 and
earlier, an AMS interface could have a maximum of 24 member interfaces.
[edit interfaces interface-name multiservice-options]
user@host# set pic-boot-timeout (240 | 300);
For example:
[edit interfaces sp-1/1/0 multiservice-options]
user@host# set pic-boot-timeout 240
Change History Table
Feature support is determined by the platform and release you are using. Use Feature Explorer to determine if a feature is supported on your platform.
19.3R2
Starting in Junos OS Release 19.3R2, an MX-SPC3 Next
Gen Services AMS interface can have up to 16 member interfaces with
a maximum of 8 MX-SPC3 services cards with up to 2 PICs on each card.
16.2
Starting with Junos OS Release
16.2, an MS-MPC AMS interface can have up to 36 member interfaces.
