########################
sysctl variables
########################

Sysctl interface
****************

sysctl variables value types
============================

There are 3 sysctl types:

- using integer value

Example:

.. code-block:: none

    sysctl set mbuf linux 16384

- using boolean value (true - 1 / false - 0)

Example:

.. code-block:: none

    sysctl set flow_acct_dropped_pkts 1

- using string value

Example:

.. code-block:: none

    sysctl set system_name "tr1"

.. note::
    For string variables, it is necessary to use quotation marks in the ``"value"`` parameter.

sysctl set
==========

``sysctl set`` sets a sysctl variable value.

.. code-block:: none

    sysctl set <name> <value>

For string variables:

.. code-block:: none

    sysctl set <name> "<value>"

**Description**

=========== ===============================================
Item        Description
=========== ===============================================
name        sysctl variable name
value       sysctl variable value
=========== ===============================================

sysctl get
==========

``sysctl get`` displays a sysctl variable value.

.. code-block:: none

    sysctl get <name> <value>

For string variables:

.. code-block:: none

    sysctl get <name> "<value>"

**Description**

=========== ===============================================
Item        Description
=========== ===============================================
name        sysctl variable name
value       sysctl variable value
=========== ===============================================


systcl variables
================

+-------------------+---------+------------------------------------------------+-------------------+
| Variable name     || Type   | Desciption                                     | Value             |
|                   || Scope  |                                                |                   |
+-------------------+---------+------------------------------------------------+-------------------+
| system_name       || String |                                                |                   |
|                   || Runtime|                                                |                   |
+-------------------+---------+------------------------------------------------+-------------------+
| pppoe_template_acl|| String |                                                |                   |
|                   || Runtime|                                                |                   |
+-------------------+---------+------------------------------------------------+-------------------+
| mac_addr_format   || String |                                                |                   |
|                   || Runtime|                                                |                   |
+-------------------+---------+------------------------------------------------+-------------------+
| ipoe_subsc_passwd || String |                                                |                   |
|                   || Runtime|                                                |                   |
+-------------------+-+-------+-+----------------------------------------------+-------------------+
| nat_max_nb_ext_sess || Integer|                                              || Default          |
|                     || Startup|                                              || Min = 1024       |
|                     ||        |                                              || Max = UINT32_MAX |
+-------------------+-+-------+-+----------------------------------------------+-------------------+
| hcar32_max        || Integer|                                                || Default          |
|                   || Startup|                                                || Min = 64         |
|                   ||        |                                                || Max = UINT32_MAX |
+-------------------+---------+------------------------------------------------+-------------------+
| det_nat_gc_step   || Integer|                                                || Default          |
|                   || Runtime|                                                || Min = 1000       |
|                   ||        |                                                || Max = UINT32_MAX |
+-------------------+------+--+------+-----------------------------------------+-------------------+
| nat_portmap_initial_size || Integer|                                         || Default          |
|                          || Startup|                                         || Min = 256        |
|                          ||        |                                         || Max = UINT32_MAX |
+-----------------------+--+------+--+-----------------------------------------+-------------------+
| qos_sch_vif_pool_size || Integer|                                            || Default          |
|                       || Startup|                                            || Min = 0          |
|                       ||        |                                            || Max = UINT32_MAX |
+-------------------+---+------+--+--------------------------------------------+-------------------+ 
| netflow_src_id    || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 1          |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+
| arp_cache_size    || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 0          |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+
| vif_max           || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 256        |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+
| subsc_vif_max     || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 1024       |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+
| ip_routes_max     || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 1024       |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------++---------++----------------------------------------------+-------------------+
| ip_route_tables_max|| Integer |                                              || Default          |
|                    || Startup |                                              || Min = 16         |
|                    ||         |                                              || Max = 65536      |
+-------------------++---------++----------------------------------------------+-------------------+
| vif_ip_addrs_max  || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 16         |
|                   ||         |                                               || Max = 65536      |
+-------------------+----------+-----------------------------------------------+-------------------+
| kni_max           || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 16         |
|                   ||         |                                               || Max = 65536      |
+-------------------+----------+-----------------------------------------------+-------------------+  
| num_rx_desc       || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 16         |
|                   ||         |                                               || Max = UINT16_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+   
| num_tx_desc       || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 16         |
|                   ||         |                                               || Max = UINT16_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+    
| num_cplane_timers || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 1024       |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+  
| num_worker_timers || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 1024       |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+   
| packet_socket_max || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 64         |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------++----------+-----------------------------------+-------------------+  
| packet_socket_input_ring_size || Integer |                                   || Default          |
|                               || Startup |                                   || Min = 64         |
|                               ||         |                                   || Max = UINT32_MAX |
+-------------------------------+----------+-----------------------------------+-------------------+
| packet_socket_output_ring_size|| Integer |                                   || Default          |
|                               || Startup |                                   || Min = 64         |
|                               ||         |                                   || Max = UINT32_MAX |
+---------------------+---------++---------+-----------------------------------+-------------------+
| dynamic_vif_auth_num|| Integer |                                             || Default          |
|                     || Startup |                                             || Min = 1024       |
|                     ||         |                                             || Max = UINT32_MAX |
+---------------------+-+--------+-+-------------------------------------------+-------------------+
| cplane_channels_length|| Integer |                                           || Default          |
|                       || Startup |                                           || Min = 1024       |
|                       ||         |                                           || Max = UINT32_MAX |
+-------------------+---+------+---+-------------------------------------------+-------------------+
| fib_next_hops_max || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 1024       |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+
| mbuf              || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 4096       |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+ 
| cmbuf             || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 4096       |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+ 
| frag_mbuf         || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 1024       |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+ 
| flow_ipv4_max     || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 1024       |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+-+--------+-+---------------------------------------------+-------------------+ 
| flow_ipv4_worker_max|| Integer |                                             || Default          |
|                     || Startup |                                             || Min = 1024       |
|                     ||         |                                             || Max = UINT32_MAX |
+-------------------+-+--------+-+---------------------------------------------+-------------------+ 
| nd_retrans_timer  || Integer |                                               || ms               |
|                   || Runtime |                                               || Default          |
|                   ||         |                                               || Min = 100        |
|                   ||         |                                               || Max = 10*60*60   |  
|                   ||         |                                               || (10 min)         |
+-------------------+--+-------+--+--------------------------------------------+-------------------+ 
| fib6_max_route_tables|| Integer |                                            || Default          |
|                      || Startup |                                            || Min = 2          |
|                      ||         |                                            || Max = 56         |
+-------------------+--+-------+--+--------------------------------------------+-------------------+ 
| fib6_max_routes   || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 2          |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+ 
| fib6_max_next_hops|| Integer |                                               || Default          |
|                   || Startup |                                               || Min = 2          |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+ 
| fib6_max_lpm_tbl8 || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 2          |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+ 
| flow_ipv6_max     || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 1024       |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------++---------++----------------------------------------------+-------------------+ 
|flow_ipv6_worker_max|| Integer |                                              || Default          |
|                    || Startup |                                              || Min = 1024       |
|                    ||         |                                              || Max = UINT32_MAX |
+--------------------+--+-------+--+-------------------------------------------+-------------------+ 
|prefix_map_max_prefixes|| Integer |                                           || Default          |
|                       || Runtime |                                           || Min = 1024       |
|                       ||         |                                           || Max = UINT32_MAX |
+-------------------+---+------+---+-------------------------------------------+-------------------+ 
| car64_max         || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 32         |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------++---------++----------------------------------------------+-------------------+ 
|ipv6_pool_cache_size|| Integer |                                              || Default          |
|                    || Startup |                                              || Min = 1024       |
|                    ||         |                                              || Max = UINT32_MAX |
+-------------------++---------++----------------------------------------------+-------------------+ 
| hcar_1l_max       || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 1024       |
|                   ||         |                                               || Max = UINT32_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+ 
| rps_queue_size    || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 512        |
|                   ||         |                                               || Max = 8192       |
+-------------------+----------+-----------------------------------------------+-------------------+ 
| arp_cache_timeout || Integer |                                               || sec              |
|                   || Runtime |                                               || Default          |
|                   ||         |                                               || Min = 10         |
|                   ||         |                                               || Max = 14400      |
+-------------------+----------+-----------------------------------------------+-------------------+ 
| dynamic_vif_ttl   || Integer |                                               || sec              |
|                   || Runtime |                                               || Default          |
|                   ||         |                                               || Min = 10         |
|                   ||         |                                               || Max = 14400      |
+-------------------+----------+-----------------------------------------------+-------------------+ 
|radius_max_sessions|| Integer |                                               || Default          |
|                   || Runtime |                                               || Min = 64         |
|                   ||         |                                               || Max = UINT16_MAX |
+-------------------+----------+-----------------------------------------------+-------------------+ 
| lpm_table8_size   || Integer |                                               || Default          |
|                   || Startup |                                               || Min = 256        |
|                   ||         |                                               || Max = UINT16_MAX |
+-------------------+----+-----+---+-------------------------------------------+-------------------+ 
|fpm_route_table_map_size|| Integer|                                           || Default          |
|                        || Startup|                                           || Min = 16         |
|                        ||        |                                           || Max = UINT16_MAX |
+------------------------+---+-----+---+---------------------------------------+-------------------+ 
|max_num_solicited_node_addrs|| Integer|                                       || Default          |
|                            || Startup|                                       || Min = 1024       |
|                            ||        |                                       || Max = UINT16_MAX |
+----------------------------+---------+---------------------------------------+-------------------+ 
|nd_neighbor_cache_entry_ttl || Integer|                                       || sec              |
|                            || Runtime|                                       || Default = 600    |
|                            ||        |                                       || Min = 10         |
|                            ||        |                                       || Max = UINT16_MAX |
+----------------------------+-----+---+-----+---------------------------------+-------------------+ 
|nd_neighbor_cache_flush_queue_time|| Integer|                                 || milliseconds     |
|                                  || Runtime|                                 || Default = 2000   |
|                                  ||        |                                 || Min = 1000       |
|                                  ||        |                                 || Max = 65000      |
+----------------------+---------+-+---------+---------------------------------+-------------------+ 
|nd_worker_nc_entry_ttl|| Integer|                                             || sec              |
|                      || Runtime|                                             || Default =        |
|                      ||        |                                             || Min = 1          |
|                      ||        |                                             || Max = UINT16_MAX |
+----------------------+---------+---------------------------------------------+-------------------+ 
| icmp6_packet_rate    || Integer|                                             || packets per sec  |
|                      || Startup|                                             || Default =        |
|                      ||        |                                             || Min = 1          |
|                      ||        |                                             || Max = UINT16_MAX |
+----------------------+-+-------+-+-------------------------------------------+-------------------+ 
|icmp6_transmission_burst|| Integer|                                           || Default =        |
|                        || Startup|                                           || Min = 1          |
|                        ||        |                                           || Max = UINT16_MAX |
+------------------------+-----+---+-----+-------------------------------------+-------------------+ 
|qos_scheduler_worker_ring_size|| Integer|                                     || Default =        |
|                              || Startup|                                     || Min = 32         |
|                              ||        |                                     || Max = 4096       |
+-----------------------+------+--+------+-------------------------------------+-------------------+ 
|pppoe_max_verbose_subsc|| Integer|                                            || Default =        |
|                       || Startup|                                            || Min = 0          |
|                       ||        |                                            || Max = UINT16_MAX |
+---------------------+-+-------+-+--------------------------------------------+-------------------+ 
|l2_ptp_sw_fdb_size   || Integer|                                              || Default =        |
|                     || Startup|                                              || Min = 16         |
|                     ||        |                                              || Max = UINT16_MAX |
+---------------------++--------++---------------------------------------------+-------------------+ 
|ip_lease_db_save_delay|| Integer|                                             || Default =        |
|                      || Runtime|                                             || Min = 10         |
|                      ||        |                                             || Max = UINT16_MAX |
+----------------------++--------+---------------------------------------------+-------------------+ 
| nat_max_maps         || Integer|                                             || Default =        |
|                      || Startup|                                             || Min = 16         |
|                      ||        |                                             || Max = 4096       |
+----------------------+---------+---------------------------------------------+-------------------+
|ipoe_unuthorized_ttl  || Integer|                                             || sec              |
|                      || Runtime|                                             || Default =        |
|                      ||        |                                             || Min = 60         |
|                      ||        |                                             || Max = 60 * 60 * 4|
+----------------------+---+-----+---+-----------------------------------------+-------------------+ 
|max_rtr_solicitation_delay|| Integer|                                         || sec              |
|                          || Runtime|                                         || Default =        |
|                          ||        |                                         || Min = 1          |
|                          ||        |                                         || Max = 255        |
+----------------------+---+-----+---+-----------------------------------------+-------------------+ 
| dad_attempts         || Integer|                                             || Default =        |
|                      || Runtime|                                             || Min = 0          |
|                      ||        |                                             || Max = 255        |
+----------------------+---------+---------------------------------------------+-------------------+
| icmp6_num_buckets    || Integer|                                             || Default =        |
|                      || Starup |                                             || Min = 1          |
|                      ||        |                                             || Max = 255        |
+----------------------+---------+---------------------------------------------+-------------------+
| icmp_num_buckets     || Integer|                                             || Default =        |
|                      || Starup |                                             || Min = 1          |
|                      ||        |                                             || Max = 255        |
+----------------------+---------+---------------------------------------------+-------------------+
|car_red_ebs_multuplier|| Integer|                                             || Default =        |
|                      || Runtime|                                             || Min = 2          |
|                      ||        |                                             || Max = 32         |
+----------------------+---------+---------------------------------------------+-------------------+
| linux_route_proto    || Integer|                                             || Default =        |
|                      || Runtime|                                             || Min = 2          |
|                      ||        |                                             || Max = 4          |
+----------------------+------+--+------+--------------------------------------+-------------------+
|nd_neighbor_cache_bucket_size|| Integer|                                      || Default =        |
|                             || Startup|                                      || Min = 5          |
|                             ||        |                                      || Max = 128        |
+-----------------------------+----+----+----+---------------------------------+-------------------+
|det_nat_sess_tbl_debug_log_enabled|| Integer|                                 || Default =        |
|                                  || Runtime|                                 || Min = 0          |
|                                  ||        |                                 || Max = 1          |
+----------------------------------+---------+---------------------------------+-------------------+