Cisco Systems 15454M6DC Manual De Usuario
9-4
Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 9 Ethernet Operation
Multicard and Single-Card EtherSwitch
Step 3
From the Port screen, choose the appropriate mode for each Ethernet port. Valid choices for the
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.
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.
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.
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.
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
A Multicard EtherSwitch configuration
ONS Node
ONS Node
ONS Node
ONS Node
Router
Ethernet card #3
Router
Router
Router
Ethernet card #1
Ethernet card #4
Ethernet card #2
Shared packet ring
VLAN A
45133