IBM Aspera HST Admin Manual page 59

Tag Description
the same virtual bandwidth cap needs to have
the same port number. To avoid port conflicts,
it is recommended to use the default UDP
port 55001. Do NOT set the port number
to the same one used by FASP data transfer
(33001).
Important: If you have a local firewall on
your server (for example, Windows firewall,
Linux iptables, or Mac ipfw), you will need
to allow the Vlink UDP port (55001, by
default) for multicast traffic.
Multicast TTL This sets the Time-to-Live (TTL) field in the
IP header for Vlink multicast packets.
For example, to create a Vlink with an ID of 108, named "50Mbps cap", with a capacity of 50 Mbps (50000 kbps),
run the following command:
# asconfigurator -x "set_trunk_data;id,108;trunk_name,50Mbps
cap;trunk_capacity,50000;trunk_on,true"
This creates the following text in aspera.conf:
<CONF version="2">
...
<trunks>
<trunk>
<id>108</id>
<name>50Mbps cap</name>
<capacity>
<schedule format="ranges">50000</schedule>
</capacity>
<on>true</on>
</trunk>
</trunks>
</CONF>
The capacity of the Vlink is set within a <schedule> tag because the capacity can be scheduled as one value
during a specified time period, and a default value at all other times. For more information on this configuration,
see the knowledge base article Specifying a time varying schedule for a Vlink at
en-us/articles/216127698-Specifying-a-time-varying-schedule-for-a-Vlink.
To edit aspera.conf manually, rather than running asconfigurator commands, open the file with write
permissions from the following location:
/opt/aspera/etc/aspera.conf
Validate the aspera.conf file using the asuserdata utility:
# /opt/aspera/bin/asuserdata -v
2. Apply the Vlink.
Assign a Vlink to global, group, or user settings for transfers in or out. Use the following syntax, updating the
direction (in or out) depending on your needs:
# asconfigurator -x
"set_node_data;transfer_in_bandwidth_aggregate_trunk_id,id"
| Configure the Server from the Command Line | 59
Values
positive integer between 1
and 255
<!-- Vlink ID -->
<!-- Vlink Name -->
<!-- Capacity -->
<!-- On -->
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