Riverstone Networks WICT1-12 - Manual (Page 102)

6-2 Riverstone Networks RS Switch Router User Guide Release 8.0
Configuring SmartTRUNKS SmartTRUNK Configuration Guide
4. Specify whether the SmartTRUNK uses SmartTRUNK Load Redistribution (SLR). This step is
optional. SLR allows the SmartTRUNK to dynamically move flows from port-to-port to take the
best advantage of each link’s current bandwidth.
6.1.1 Creating a SmartTRUNK
When creating a SmartTRUNK, assign a name to the SmartTRUNK and then select its control protocol. The choices
for control protocol are: DEC Hunt Group control protocol, Link Aggregation Control Protocol (LACP), or no control
protocol:
DEC Hunt Group – Can be used to connect a SmartTRUNK to another RS, Cabletron devices (such as the
SmartSwitch 6000 or SmartSwitch 9000), or Digital GIGAswitch/Router. The Hunt Group protocol is useful for
detecting errors like transmit/receive failures and misconfiguration.
LACP – If you are configuring the SmartTRUNK for 802.3ad link aggregation, specify the Link Aggregation Control
protocol (LACP). LACP is limited to SmartTRUNKs comprised of Ethernet ports only, and all ports within the
SmartTRUNK must have the same bandwidth, i.e., either all 10/100 Mbps Ethernet ports or all Gigabit Ethernet ports.
No Control Protocol – Can be used to connect the SmartTRUNK to another RS. Also, if you are connecting the
SmartTRUNK to a device that does not support either DEC Hunt Group or LACP control protocols, such as those that
support Cisco’s EtherChannel technology, specify no control protocol. Only link failures are detected in this mode.
Here is an example of creating a SmartTRUNK named
st.1
, which uses no control protocol:
6.1.2 Adding Physical Ports to the SmartTRUNK
You can add any number of 10/100 Ethernet, Gigabit Ethernet, or PoS ports to a SmartTRUNK, and ports can span
across any number of line cards. If one link should go down, traffic is redirected seamlessly to the remaining
operational links.
SmartTRUNK Port Limitations
Ports added to a SmartTRUNK must meet the following criteria:
• Running in full duplex mode
• Be a member of the default VLAN
• If using LACP as the control protocol, ports must be all Ethernet and their bandwidth must be the
same (either all 10/100 Mbps Ethernet or Gigabit Ethernet, but not both).
Here is an example of adding ports
et.3.1
through
et.3.8
to a SmartTRUNK:
rs(config)#smarttrunk create st.1 protocol no-protocol
rs(config)#smarttrunk add ports et.3.1-8 to st.1