Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 
 

flow-table-size

Syntax

Hierarchy Level

Description

Configure the size of hash tables in units of 256K entries for inline services sampling.

Starting with Junos OS Release 15.1F2, by default, the software allocates one 1K IPv4 flow table. To allocate 15 256K IPv4 flow tables, the former default, you can enter this configuration from the [edit] hierarchy level:

The flow table size is the sum of all the configured flow table types. The sum of all the configured flow table types cannot exceed the maximum supported flow table size. For example, for the MPC2E, MPC3E, and MPC4E line cards, the maximum supported flow table size is 15 units. The different flow table families could be configured as follows for these line cards:

IPv4 table size:   5
IPv6 table size:   5
MPLS table size: 4
VPLS table size:  1
----------------------
Total table size: 15

Starting with Junos OS Release 17.3R1, the maximum supported flow table size varies by line card type:

Table 1: Maximum Supported Flow Table Size for MX Series Routers

Line Card

Maximum Number of Units (1 unit =256K entries)

MPC2E, MPC3E, and MPC4E

15

MPC5E and MPC6E

220

MPC7E , MPC9E, LC2103, and LC480

48

MPC8E

97

MPC10E and MPC11E

48

JNP10K-LC2301, JNP10K-LC4800, JNP10K-LC9600, and MX304-LMIC16BASE

80

Note:

We recommend that you configure this statement during a maintenance window:

  • Prior to Junos OS 16.1R1 and 15.1F2, the FPC reboots automatically after you commit this configuration change.
  • Starting from Junos OS Release 16.1R1 and 15.1F2, any changes in the configured size of the flow table do not require a reboot of the FPC.

The remaining statements are defined separately.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 12.1.

ipv6-extended-attrib option added in Junos OS Release 14.2 for MX Series routers.

vpls-flow-table-size option added in Junos OS Release 13.2 for MX Series routers.

bridge-flow-table-size option added in Junos OS Release 18.2R1 for MX Series routers, replacing the vpls-flow-table-size option, which has been deprecated.