4840G, LocalDirector, or Catalyst 6000 switches, is crucial in
delivering mission-critical applications and services. Content Flow
Monitor takes a significant step forward to offer a complete
real–time, performance-monitoring solution for Cisco server
load-balancing networks. Its feature-rich, performance-reporting
capabilities greatly satisfy the operational needs for monitoring and
trouble-shooting content-delivery networks. Content Flow Monitor
1.1 is an essential tool to enable service providers and large
enterprises to offer the value-added services by automatically
extracting and exporting critical configuration and performance
statistics.
Fast EtherChannel and Gigabit EtherChannel Technologies
The Catalyst 4840G supports both Fast EtherChannel
®
and Gigabit EtherChannel technologies, allowing network
managers to group up to four of the 10/100 ports into a channel as
well as grouping the two-gigabit Ethernets into an uplink channel.
Quality of Service
The Catalyst 4840G incorporates a centralized, non-blocking,
22-gigabit, shared-memory, switching fabric. The rich QoS
capabilities of the switching fabric enable network managers to
protect mission-critical applications by supporting delay-sensitive
traffic while managing bandwidth in the campus backbone. The
switching fabric supports differentiated delay priorities using a
WRR scheduler for delay-sensitive applications, and differentiated
loss priorities for managing congestion as well as traffic policing
and shaping. The fast packet memory embedded in the switching
fabric is allocated dynamically on a per-queue (flow) basis. This
dynamic allocation used in conjunction with user-defined queue
thresholds and configurable queue scheduling weights ensures that
time-sensitive traffic is handled properly with no packet loss. These
thresholds and queuing weights can be dynamically adjusted with
Cisco Assure Policy Networking, allowing an end-to-end QoS
solution.
Summary
The Catalyst 4840G is a cost-effective, high-performance,
feature-rich, SLB switch ideally suited for server farms that require
wire-speed traffic balancing among many firewalls or servers.
In addition to wire-speed FWLB or SLB, the Catalyst 4840
supports wire-speed routing and switching of IP across its
interfaces. The Catalyst 4840G features a dedicated configuration
of 40 10/100 Ethernet ports and 2 modular Gigabit Ethernet uplink
ports. This new Catalyst has a non-blocking, 22-Gbps architecture
that enables all ports to switch simultaneously at wire speed. The
two-gigabit uplinks support standard GBIC technology, giving
network managers the flexibility to quickly select and change
gigabit interfaces in the Catalyst 4840G.
Technical Specifications
Performance
• 22-Gbps switching fabric
• SLB - 73,000 connections per sec (3 packet) ; 56,000
connections per sec (6 packet)
Note: 56,000 connections per second represents the true
performance of this product in TCP connection setup. However,
using the test most commonly sited by other vendors, the 3 packet
test, the performance of the C4840G has been tested at 73,000
connections per second.
• FWLB - 60,000 connections per second
• 240,000 concurrent sessions
• More than 9 million pps wire-speed forwarding rate for 64-byte
packets
• MIPs RISC CPU- R5000 CPU, 16MB Flash, 128MB DRAM
• Route entries: 24,000 maximum
• 12 MB memory architecture shared by all ports
• Packet-forwarding rate for 64-byte packets:
– 14,880 pps to 10-Mbps ports
– 148,800 pps to 100BaseT ports
– 1,488,000 pps to 1000BaseX ports
Management
• SNMP Management Information Base (MIB) II
• Cisco Server Load-Balancing MIB
Standards
• IEEE 802.3x full duplex on 10BaseT, 100BaseTX, and
1000BaseX ports
• IEEE 802.1D Spanning-Tree Protocol
• IEEE 802.1Q VLAN
(1 paginas)
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