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Chapter 5
Packet Classification and Labelling
E-NIT-CTC-20041213-0013 v0.5
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5.4 Chains
Introduction A chain or sub-chain can be useful for personal ordering or grouping but is not
necessary. You can also place the rules in the _user_labels chain.
The following default chains will be configured:
Routing_Labels: chain for routing label rules; if there is a match in this chain (or
it's subchains), the corresponding label is used as stream routing label.
rt_user_labels: subchain of Routing_Labels for all user added label rules;
overrules auto-routing-label-rules.
rt_default_labels: subchain of Routing_Labels for default routing label rule; will
be overruled by auto-routing-label-rules.
QoS_Labels: chain for QoS label rules; if there is a match in this chain or it's
subchains, the corresponding label is used as stream qos label.
qos_user_labels: subchain of QoS_Labels for user added label rules; overrules
auto-qos-label-rules
qos_default_labels: subchain of QoS_Labels for default QoS label rules; will be
overruled by auto-qos-label-rules
Adding a chain As seen before in “5.1.1 Order of classification rules” chains can be added as
wanted.
Execute the following CLI command to add a chain:
Where my_chain is the name of the chain you want to add.
List the chains Execute the following CLI command to see a list of all the chains:
This command will return you all chains defined:
{Administrator}=>:label chain add chain my_chain
{Administrator}=>:label chain list
Chains
======
Name Description
-----------------------------------------------------------------
routing_labels system
rt_user_labels user
rt_default_labels user
qos_labels system
qos_user_labels user
qos_default_labels user
my_chain user