ARP/ND Functions¶
arp nd config¶
Execute Tester Command ${rt_handle} command=test_control <additional key=value arguments>
- Purpose:
- This is a Spirent Extension created to configure Address Resolution Protocol (ARP) ARP/Network Discovery (ND). ARP/ND resolves the MAC address of the gateway/destination for the specified streamblocks or emulated devices. ARP is used for IPv4 address resolution and ND is used with IPv6.
Synopsis:
Note: M indicates the argument is `Mandatory`.
arp nd config
apply_configured_gw_mac= {true|false}
duplicate_gw_detection= {true|false}
auto_arp_enable= {true|false}
cyclic_arp_enable= {true|false}
unique_mac_addr_in_reply_enable= {true|false}
unique_mac_pattern= {0-65535}
ignore_failures= {true|false}
learning_rate= <integer>
max_burst= <integer>
process_gratuitous_arp_requests= {true|false}
process_unsolicited_arp_replies= {true|false}
retry_count= <0-100>
time_out= <integer>
update_dest_mac= {true|false}
use_configured_link_local_addr= {true|false}
use_gw_for_target= {true|false}
use_link_layer_cache_in_stack= {true|false}
use_link_local_addr= {true|false}
Arguments:
apply_configured_gw_mac
Once enabled, Spirent HLTAPI will use the gateway MAC address
configured on the emulated device interface instead of using
ARP/ND to resolve the address. Possible values are true (enable)
and false (disable). The default value is false.
duplicate_gw_detection
Once enabled, Spirent HLTAPI will perform ARP/ND suppression for
a duplicate gateway. Possible values are true (enable) and false
(disable). The default value is true.
auto_arp_enable
Determines whether to resolve IPv4 or IPv6 addresses
before transmitting. Possible values are true and false. When it
is set to true, Spirent HLTAPI will resolve IPv4 or IPv6
addresses before transmitting. The default value is false.
cyclic_arp_enable
Enables or disables cyclic ARP. Possible values are true (enable)
and false (disable). The default value is true.
unique_mac_addr_in_reply_enable
Enables or disables the firmware to respond with a unique MAC
address. Possible values are true (enable) and false (disable).
The default value is false.
unique_mac_pattern
Defines the response pattern for the first two octets of the MAC
address to be sent to the firmware. You must set
unique_mac_addr_in_reply_enable to true. Possible values range
from 0 to 65535. The default value is 2222.
ignore_failures
Once enabled, Spirent HLTAPI will ignore ARP/ND failures and
proceed to transmit. Possible values are true (enable) and false
(disable). The default value is true.
learning_rate
Specifies the learning rate for ARP/ND in packets per second. The
default value is 250.
max_burst
Specifies the maximum burst size in packets allowed for ARP/ND.
The default value is 16.
process_gratuitous_arp_requests
Once enabled, Spirent HLTAPI allows gratuitous ARP requests from
the DUT. Possible values are true (enable) and false (disable).
The default value is true.
process_unsolicited_arp_replies
Once enabled, Spirent HLTAPI allows unsolicited ARP replies from
the DUT. Possible values are true (enable) and false (disable).
The default value is true.
retry_count
Specifies the retry count of ARP/ND. Possible values range from 0
to 100. The default value is 3.
time_out
Specifies the timeout interval in milliseconds for ARP/ND. The
default value is 1000.
update_dest_mac
Enables/disables destination MAC address learning on receiving
nongratuitous ARP requests. Possible values are true (enable)
and false (disable). The default value is false.
use_configured_link_local_addr
Once enabled, the IPv6 device will use the configured link local
IPv6 address as the source address for neighbor discovery.
Possible values are true (enable) and false (disable). The
default value is false.
use_gw_for_target
Once enabled, the gateway address will be used as the
ARP target, whether or not the destination address is in the same
subnet as the source IP address. Possible values are true
(enable) and false (disable). The default value is false.
use_link_layer_cache_in_stack
Once enabled, Spirent HLTAPI will check the ARP/ND cache first
and use any item it finds there. If there is no item in the
cache, the system sends an ARP/ND request. Possible values are true
(enable) and false (disable). The default value is false.
use_link_local_addr
Once enabled, the IPv6 device will use the configured link local
IPv6 address as the source address for neighbor discovery.
Possible values are true (enable) and false (disable). The
default value is false.
- Return Values:
Depending on the specific language that HLTAPI uses, the function returns a keyed list/dictionary/hash (See Introduction for more information on return value formats) using the following keys (with corresponding data):
status Success (1) or failure (0) of the operation log An error message (if the operation failed)
- Description:
- The
arp nd configfunction configures ARP/ND to resolve the MAC address of the gateway/destination in the specified streamblocks or emulated devices. The returned keyed list displays whether the operation was successful. - Examples:
Sample Input:
set device_ret0 [arp nd config apply_configured_gw_mac= true duplicate_gw_detection= false auto_arp_enable= true cyclic_arp_enable= false unique_mac_addr_in_reply_enable= true unique_mac_pattern_enable= 1111 ignore_failures= false learning_rate= 0 max_burst= 0 process_gratuitous_arp_requests= false process_unsolicited_arp_replies= false retry_count= 5 time_out= 1500 update_dest_mac= true use_configured_link_local_addr= true use_gw_for_target= true use_link_layer_cache_in_stack= true use_link_local_addr= true]
Sample Output:
{status 1}