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Multicard and Single-Card EtherSwitch
From the Port screen, choose the appropriate mode for each Ethernet port. Valid choices for the
Step 3
E100T-12/E100T-G card are Auto, 10 Half, 10 Full, 100 Half, or 100 Full. Valid choices for the
E1000-2/E1000-2-G card are 1000 Full or Auto.
Both 1000 Full and Auto mode set the E1000-2 port to the 1000 Mbps and Full duplex operating mode;
however, flow control is disabled when 1000 Full is selected. Choosing Auto mode enables the E1000-2
card to autonegotiate flow control. Flow control is a mechanism that prevents network congestion by
ensuring that transmitting devices do not overwhelm receiving devices with data. The E1000-2 port
handshakes with the connected network device to determine if that device supports flow control.
Step 4
Click the Enabled checkbox(s) to activate the corresponding Ethernet port(s).
Step 5
Click Apply.
Your Ethernet ports are now provisioned and ready to be configured for VLAN membership.
Step 6
Repeat this procedure for all other cards that will be in the VLAN.
9.2 Multicard and Single-Card EtherSwitch
The ONS 15454 enables multicard and single-card EtherSwitch modes. At the Ethernet card view in
CTC, click the Provisioning > Card tabs to reveal the Card Mode option.
9.2.1 Multicard EtherSwitch
Multicard EtherSwitch provisions two or more Ethernet cards to act as a single layer 2 switch. It supports
one STS-6c shared packet ring, two STS-3c shared packet rings, or six STS-1 shared packet rings. The
bandwidth of the single switch formed by the Ethernet cards matches the bandwidth of the provisioned
Ethernet circuit up to STS-6c worth of bandwidth.
Figure 9-3
Router
Router
Cisco ONS 15454 Installation and Operations Guide
9-4
A Multicard EtherSwitch configuration
VLAN A
Ethernet card #1
ONS Node
Shared packet ring
Ethernet card #3
ONS Node
Ethernet card #2
ONS Node
Ethernet card #4
ONS Node
Chapter 9
Ethernet Operation
Router
Router
November 2001
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