BNT Layer 2/3 Copper and Fiber Gigabit Ethernet
Switch Modules for IBM BladeCenter
IBM BladeCenter at-a-glance guide
As business applications become more and more demanding, data centers have become more complex,
cumbersome, and expensive to manage. IBM BladeCenter offers solutions to help lower costs while
enhancing performance by accommodating many integration technologies.
The BNT Layer 2/3 Switch offers all the switching features in a BladeCenter chassis at a competitive
price. This switch is offered in two versions: Copper and Fiber. These versions provide reliability and
flexibility and meet all the stringent requirements of both enterprise and telecom environments. Figure 1
shows the two switch modules.
Clients do not need the most expensive switches to manage their virtualization requirements. These low
cost switches offer the maximum uplink bandwidth and a low blocking ratio for maximum performance,
while consuming extremely lower power at only 27W. The fiber model is ideal for those who need to carry
data greater distances, want better security since it is difficult to tap and does not radiate data, or look for
better reliability because it is immune to electromagnetic interference.
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Part number information
Table 1 shows the part numbers to order these modules.
Table 1. Part number and feature code for ordering
* Feature codes are listed in the form of three codes separated by a forward slash mark (/). The first
feature code is for BladeCenter E-, T-, H-, and HT-based configurations that are available through the
IBM System x server. The second feature code is for BladeCenter S-based configurations that are
available through the System x sales channel. The third feature code is for BladeCenter S- and
BladeCenter H-based configurations that are available through the IBM Power Systems sales channel
when applicable.
The part numbers include the following items:
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One BNT Layer 2/3 Copper Gigabit Ethernet Switch Module or BNT Layer 2/3 Fiber Gigabit Ethernet
Switch Module with six small form-factor pluggable (SFP) transceivers
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3-meter Universal Serial Bus (USB)-to-DB9 serial console cable
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Printed documentation
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Documentation CD-ROM
Modes of operation
The switch module supports two unique operational modes that are determined by the firmware edition
that is loaded onto the switch:
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Standard shipped Layer 2/3 mode
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SmartConnect mode (formerly known as BladeCenter Open Fabric Manager with Nortel/BNT
Extensions)
Standard Layer 2/3 mode provides full implementation of networking services and technologies supported
by the switch. SmartConnect mode provides a preconfigured subset of functions to enable basic Layer 2
connectivity only.
Note: SmartConnect is a firmware upgrade to this switch module and is different from the BladeCenter
Open Fabric Manager offering from IBM.
SmartConnect mode is used for less complex environments where only basic network connectivity is
required and there is no need for advanced networking services. SmartConnect mode’s reduced set of
features and easy-to-use graphical user interface (GUI) help to minimize administrative efforts and skills
required to deploy this solution. Its features and GUI also help to minimize the impact (both from
management and functional point of views) on upstream network devices.
One of the features of SmartConnect mode is ServerMobility, which enables you to assign IP addresses
to servers based on their physical location in the BladeCenter chassis. This feature can help to keep
server identity based on IP address in basic failover scenarios. For example, if you replace a failed server
BNT Layer 2/3 Copper and Fiber Gigabit Ethernet Switch Modules for IBM BladeCente
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with a new unit, this new unit will have the same IP address as the failed server.Alternatively, if the server
fails, then the other server in the chassis gets the IP address of the failed server. A Dynamic Host
Configuration Protocol (DHCP) server is required for ServerMobility operations.
Specifically, the following functions are supported in SmartConnect mode:
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Port groups
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Virtual LAN (VLAN) and VLAN tagging
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Trunking (link aggregation)
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Layer 2 Failover (Switch Failover)
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IGMP snooping
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Web-based or command-line interface (CLI)-based management interface
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Support for SSH
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RADIUS/TACACS+ access control to the switch
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Port monitoring
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ServerMobility
Notes:
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When the switch operates in SmartConnect mode, do not connect the host devices, such as
workstations or servers, to the external ports because this leads to problems with network traffic flow.
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The Spanning Tree Protocol (STP) is not supported in SmartConnect mode. By using the color-based
BNT configuration tool, it is simple to build a loop-free layer 2 topology. The software also avoids
basic mistakes that lead to these events .
Benefits
The BNT Layer 2/3 Copper and Fiber Gigabit Ethernet Switch Modules offer the following benefits:
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Integration and consolidation : These modules offer integration within the BladeCenter chassis,
enabling clients to consolidate full Layer 2-3 LAN switching and routing capabilities into a single
chassis. This consolidation helps flatten the data center infrastructure and reduces the number of
discrete devices, management consoles, and equipment that administrators must deal with, helping to
lower costs and simplify deployment.
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Layer 3 functionality: The BNT Layer 2/3 Copper and Fiber Gigabit Ethernet Switch Modules are two
of only a few switch modules in the blade market that include Layer 3 functionality as standard, which
provides security and performance benefits as inter-VLAN traffic stays within the chassis. These
switches also provide the full range of industry-standard Layer 3 protocols from static routes for small
and medium business (SMB) customers to technologies, such as Open Shortest Path First (OSPF)
and Border Gateway Protocol (BGP), for enterprise customers.
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Fiber offering: The fiber switch module is ideal for those clients who require fiber for high data rate
systems that demand high bandwidth over long distances and require complete immunity to electrical
interference.
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Interoperability: BNT switches interoperate seamlessly with the upstream switches of other vendors.
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Management: These switches are designed to support multiple CLIs, which allows IT staff to select
one with which they are most comfortable: BLADEOS CLI for those who have a Nortel switch
background, industry based CLI (Cisco-like) for those who are familiar with IOS, and a full-function
Web-based GUI for the latest in simplicity.
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Fault tolerance: These BNT switches automatically learn alternate routes and perform faster
convergence in the unlikely case of a link, switch, or power failure. The switch uses proven
technologies such as L2 trunk failover, advanced VLAN-based failover, Virtual Router Redundancy
Protocol (VRRP), IGMP V3 snooping, and OSPF.
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Features and specifications
The BNT Layer 2/3 Copper and Fiber Gigabit Ethernet Switch Modules for standard mode of operation
includes the following features and functions:
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Internal ports
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14 internal full-duplex Gigabit ports, one connected to each of the blade servers in the
BladeCenter unit
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Two internal full-duplex 10/100 Mbps ports connected to the management module
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External ports
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Copper switch: Six 1000BASE-T copper RJ-45 connections for making 10/100/1000 Mbps
connections
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Fiber switch: Six 1000BASE-SX SFP transceiver-based LC fiber connections for making 1000
Mbps connections
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An RS-232 serial port that provides an additional means to install software and configure the
switch module
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Scalability and performance
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Autosensing 10/1000/1000 Mbps external Ethernet ports for bandwidth optimization
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Non-blocking architecture with wire-speed forwarding of traffic
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Media access control (MAC) address learning: automatic update, supports up to 16 K MAC
addresses
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Up to 128 IP interfaces per switch
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Static, EtherChannel, and LACP (IEEE 802.3ad) link aggregation, up to 6 Gb of total bandwidth
per switch, up to three trunk groups, and up to six ports per group
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Support for jumbo frames (up to 9216 bytes)
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Broadcast/multicast storm control
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IGMP snooping for limit flooding of IP multicast traffic (IGMP V1, V2, and V3)
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IGMP filtering to control multicast traffic for hosts participating in multicast groups (IGMP V1, V2,
and V3)
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Configurable traffic distribution schemes over trunk links based on source/destination IP
addresses, MAC addresses, or both
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Fast port forwarding and fast uplink convergence for rapid STP convergence
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Availability and redundancy
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VRRP for Layer 3 router redundancy
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IEEE 802.1D STP for providing Layer 2 redundancy with PVRST+
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IEEE 802.1s Multiple STP (MSTP) for topology optimization, up to 128 STP instances are
supported by single switch
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IEEE 802.1w Rapid STP (RSTP) provides rapid STP convergence for critical delay-sensitive,
traffic-like voice or video
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Layer 2 Trunk Failover to support active/standby configurations of network adapter teaming on
blades
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Interchassis redundancy (Layer 2 and Layer 3)
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VLAN support
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Up to 1024 VLANs supported per switch; VLAN numbers ranging from 1 to 4095 (4095 is used for
the management module’s connection only)
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802.1Q VLAN tagging support on all ports
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Private VLANs
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Security
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VLAN-based, MAC-based, and IP-based access control lists (ACLs)
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802.1X port-based authentication
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Multiple user IDs and passwords
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User access control
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Radius/TACACS+
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Quality of Service (QoS)
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Up to eight queues per port
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Support for IEEE 802.1p, IP ToS/DSCP, and ACL-based (MAC/IP source and destination
addresses, VLANs) traffic classification and processing
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Traffic shaping and re-marking based on defined policies
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Eight Weighted Round Robin (WRR) priority queues per port for processing qualified traffic
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Layer 3 functions
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IP forwarding
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IP filtering with ACLs (up to 4096 ACLs supported)
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VRRP for router redundancy
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Support for up to 128 static routes
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Routing protocol support (Router Information Protocol (RIP) v1, RIP v2, OSPF v1, v2, and v3,
BGP-4), up to 1024 entries in routing table
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Support for DHCP Relay
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Manageability
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Simple Network Management Protocol (SNMP; V1, V2, and V3)
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HTTP/HTTPS browser GUI
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Industry standard CLI and BLADEOS/AlteonOS CLI
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Telnet interface for CLI
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SSH
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Serial interface for CLI
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Scriptable CLI
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Firmware image update (TFTP and FTP)
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Network Time Protocol (NTP) for switch clock synchronization
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BNT BLADEHarmony Manager support
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Monitoring
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Switch LEDs for external port status and switch module status indication
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Port mirroring for analyzing network traffic passing through switch
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Change tracking and remote logging with syslog feature
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POST diagnostics
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Serial over LAN (SOL)
BNT Layer 2/3 Copper and Fiber Gigabit Ethernet Switch Modules for IBM BladeCente
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