Cisco Cisco Catalyst Blade Switch 3030 for Dell Libro blanco
Design Guide
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Loop protection and rapid convergence with support for Per VLAN Spanning Tree Plus
(PVST+), 802.1w, 802.1s, BDPU Guard, Loop Guard, PortFast, UplinkFast, and
Unidirectional Link Detection (UDLD)
(PVST+), 802.1w, 802.1s, BDPU Guard, Loop Guard, PortFast, UplinkFast, and
Unidirectional Link Detection (UDLD)
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Advanced management protocols, including Cisco Discovery Protocol, VLAN Trunking
Protocol (VTP), and Dynamic Trunking Protocol (DTP)
Protocol (VTP), and Dynamic Trunking Protocol (DTP)
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Port Aggregation Protocol (PAgP) and Link Aggregation Control Protocol (LACP) for link
load balancing and high availability
load balancing and high availability
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Support for authentication services, including RADIUS and TACACS+ client support
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Support for protection mechanisms, such as limiting the number of MAC addresses allowed
or shutting down the port in response to security violations
or shutting down the port in response to security violations
The CBS3130 brings one additional feature not found in other Ethernet Blade switches: The ability
to form a Virtual Blade Switch. By combining the Blade switches together via the high speed
interconnect cables, the CBS3130 can emulate a redundant Top of the Rack (ToR) solution.
to form a Virtual Blade Switch. By combining the Blade switches together via the high speed
interconnect cables, the CBS3130 can emulate a redundant Top of the Rack (ToR) solution.
A Virtual Blade Switch offers the following features not present in other Blade Switches:
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A single point of management for the entire Rack of up to 8 Ethernet Switches.
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One IP address for Management
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Single upgrade for the entire rack of VBS enabled switches. The user only
upgrades the master switch and the master upgrades the members.
upgrades the master switch and the master upgrades the members.
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Single configuration file for entire rack- The Ring has one master switch which
provides the management functions. In case of failure of the master, each
member switch is capable of taking over the master functions. Additional
switches can be added to the configuration without taking down the existing
members. If a member switch fails, the high speed ring connections will loop
back around the failed device.
provides the management functions. In case of failure of the master, each
member switch is capable of taking over the master functions. Additional
switches can be added to the configuration without taking down the existing
members. If a member switch fails, the high speed ring connections will loop
back around the failed device.
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Single STP instance for L2 networks and a single Router domain for L3 networks
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Consolidation of uplink ports- in a VBS environment, there is no longer a requirement to
uplink from each individual switch into the aggregation layer.
uplink from each individual switch into the aggregation layer.
Figure 4 shows a diagram of a Virtual Blade Switch configuration. In this configuration, two
member switches have a 10GE Ethernet connection to the aggregation layer. These two cables
can be EtherChannelled together to form a 20GE pipe. The number of uplinks is dependent on
traffic flow; typically two to four are used for the entire rack. Placing the uplinks on different
member switches and in different enclosures helps insure maximum resiliency against switch or
enclosure failure. The maximum raw capacity of the ring is 64 Gbps; actual throughput depends on
traffic patterns and traffic type.
member switches have a 10GE Ethernet connection to the aggregation layer. These two cables
can be EtherChannelled together to form a 20GE pipe. The number of uplinks is dependent on
traffic flow; typically two to four are used for the entire rack. Placing the uplinks on different
member switches and in different enclosures helps insure maximum resiliency against switch or
enclosure failure. The maximum raw capacity of the ring is 64 Gbps; actual throughput depends on
traffic patterns and traffic type.
© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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