Data Sheet
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Intermediate System (IS-IS) Protocol, and EIGRP. For a detailed list of supported software features, please refer to
the software release notes at
http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/release/note/OL_23985.html.
Smart Top-of-Rack Design
Historically, data center design engineers have had to trade off access-layer features such as QoS, network visibility,
and security when moving from an end-of-row (EoR) to a ToR data center design. The Cisco Catalyst 4948E and
4948E-F offer the same features found on large EoR data center switches in a 1RU form factor optimized for ToR
deployments.
A few of the features specific to smart ToR switches are:
●
Server-rack-optimized switches with the option of front-to-back or back-to-front airflow
●
Nonblocking hardware-based switching and routing
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Full support for access- and distribution-level Layer 3 routing
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Advanced QoS including a modular QoS command-line interface (CLI)
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Advanced security
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Extended MAC address support for virtual environments
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Network visibility (future support)
Data centers focused on the following applications should deploy smart ToR switches:
●
High-performance technical computing (grid)
●
Enterprise and service provider cloud
●
Virtual desktop environments
●
Network and server virtualized data centers
●
Web services
●
Enterprise IT
Cisco IOS Embedded Event Manager
Cisco IOS EEM is a unique subsystem within Cisco IOS Software that allows customers to create and
asynchronously run scripts directly on a router or switch. Scripts can be programmed using a simple CLI. Cisco IOS
EEM responds to real-time events to automate tasks or to take automatic action based on condition detection.
Customers can also use Cisco IOS EEM to create custom commands to reduce deployment and management
complexity. Scripts can enable simple to complex automated actions, such as entering a log item or changing a port
configuration in response to a security threat.
Visit the open Cisco IOS EEM scripting community,
Cisco Beyond, for sample Cisco IOS EEM scripts.
Optimized for Multimedia Applications
The Cisco Catalyst 4948E and 4948E-F are optimized for multimedia applications, with advanced multicast support.
The switches support Protocol-Independent Multicast (PIM), Source-Specific Multicast (SSM), and Bidirectional PIM
(bidir-PIM), providing end users with additional scalability to support multimedia applications. Also supported are
Internet Group Management Protocol (IGMP) snooping and Multicast Listener Discovery (MLD) snooping in
hardware, enhancing performance and reducing network traffic by allowing a switch to dynamically add and remove
hosts from a multicast group.
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