Is there a way (API) to get all the attributes of a header under streamblock ?

Question

question

udaya asked Jan 10, '14 ericnute edited May 7, '14

Is there a way (API) to get all the attributes of a header under streamblock ?

There are many headers under a streamblock (e.g. EthernetII, ARP, IPv4 etc)and each one has separate attributes to configure them. Can we have API or any way so that we can get all the attribute of a header ? Please help!!

Spirent TestCenter (STC)api streamblock

10 |950

Attachments: Up to 2 attachments (including images) can be used with a maximum of 512.0 KiB each and 1.0 MiB total.

Answer 1 · 2014-01-10T19:09:25Z

mjefferson answered Jan 10, '14 ericnute edited May 7, '14

foreach child [stc::get $streamblock -children] { puts "Object: $child" array set dummy [stc::get $child] parray dummy unset dummy puts "" } If you know the object type, you can just just grab directly. set pdu [stc::get $streamblock -children-ethernet:EthernetII] puts [stc::get $pdu]

1

10 |950

Attachments: Up to 2 attachments (including images) can be used with a maximum of 512.0 KiB each and 1.0 MiB total.

udaya commented · Jan 13, 2014 at 04:32 AM

Works super !!

0 ·

Answer 2 · 2014-01-10T19:07:31Z

EricGregMiller answered Jan 10, '14 EricGregMiller edited Jan 13, '14

Hi Udaya, Unfortunately I don't think the headers and attributes are shown in help. My suggestion is to use the TestCenter GUI to easily discover and manipulate headers and their attributes. When you have something close to what you want save the configuration as XML. Then load the XML in an API shell using stc::perform loadfromxml -filename . You can find the streamblocks under ports (stc::get project1 -children-ports, then stc::get port1 -children-streamblock). [EDIT: Removed reference to FrameConfig XML. Instead use PDU objects as presented by mjefferson]

2

10 |950

Attachments: Up to 2 attachments (including images) can be used with a maximum of 512.0 KiB each and 1.0 MiB total.

mjefferson commented · Jan 10, 2014 at 07:23 PM

Hi Eric, Sorry, that's definitely not the way to do it. Each PDU is a child object of the StreamBlock. You can use the API to discover and view all of the current PDUs and their attributes. foreach child [stc::get $streamblock -children] { puts "Object: $child" array set dummy [stc::get $child] parray dummy unset dummy puts "" }

1 ·

EricGregMiller mjefferson commented · Jan 10, 2014 at 07:50 PM

Thanks, Matt, I stand corrected. Learn something new every day. :-) So to be clear, it's still a good idea to play around in TestCenter GUI. After that please do NOT go into the XML like I did. Instead you can view and play around with the children of the streamblock.

0 ·

Answer 3 · 2014-01-10T13:42:11Z

Yaseen answered Jan 10, '14

We can get all the children information of the streamblock using a help command i.e., stc::help streamblock Note: This returns only the name of the children but not the exact object name that you can use to create it. Hope this helps! Thanks!

1

10 |950

Attachments: Up to 2 attachments (including images) can be used with a maximum of 512.0 KiB each and 1.0 MiB total.

udaya commented · Jan 10, 2014 at 06:53 PM

NO Yaseen . It is not. Say ethernet header has attributes like srcMac , Name, ethertype etc. So I like to get all these attributes (attribute names) of a header.

0 ·

question