Command Line Interface
1553-CNH 160 0787 Uen PA2 2005-09-23
101
Command Usage
Ports can be statically grouped into an aggregation link (that is a trunk) to
increase the bandwidth of a network connection or to ensure fault recovery.
For example, a trunk consisting of two 1000 Mbps ports can support an ag-
gregated bandwidth of 2 Gbps when operating at full duplex.
The ECN320 supports up to six active trunks and ECN330 supports up to
13 active trunks.
A port can only join a trunk if the configuration of the port (port settings,
VLAN, QoS) matches the configuration of the trunk.
On uplink ports either the Link Aggregation Control Protocol (LACP, IEEE
802.3ad) can be used to automatically negotiate a trunk link between the
ECN and another network device or a static trunk can be configured. For
LACP trunks, the switches have to comply with LACP. For static trunks the
switches has to comply with the Cisco EthernetChannel standard.
When link aggregation is configured on the downlink ports it must be con-
figured in the EDN312x as well to work. The EDN312x is in the Inventory
regarded as connected to the primary port, thus it is edn node a.0 where a
is the primary port number which need to have the link-configuration set to
link-aggr.
Examples
ecn330(config)# ecn link-aggregation create-trunk pri-
mary 1 secondary 2
ecn330(config)# ecn link-aggregation uplink static pri-
mary 26 secondary 27
11.6.3.3 port
The spanning-tree interface commands are described in this section. The
spanning-tree protocol commands are described in the section
spanning-
tree on page
108.
Table 11 Spanning-tree interface commands
Cost
Configure the spanning tree path cost for
the specified interface
102
edge-port
Specify an interface as an edge port. Use
the no form to restore the default
103
link-type
Configure the link type for Rapid Span- 104
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