4
Campus Deployments
The QFX5100 offers an economical, power-efficient, and compact
solution for aggregating 10GbE connections from access devices
in building and campus deployments (see Figure 6). The switch’s
dual-speed interfaces also support environments transitioning
from 1GbE to 10GbE.
The QFX5100 easily meets enterprise core switch requirements,
delivering wire-speed performance on every port, full device
redundancy, support for Layer 3 dynamic routing protocols such
as RIP and OSPF, L2 and L3 MPLS VPNs, and a comprehensive
security and quality-of-service (QoS) feature set.
Features and Benefits
• Topology-Independent In-Service Soware Upgrade (TISSU):
With its Intel core processor, the QFX5100 switches allow Junos OS
to run within a virtual machine (VM) on Linux. Junos OS runs in two
separate VMs in active and standby pairs; during soware upgrade
cycles, the switches seamlessly move to the newer soware version
while maintaining intact data plane trac. This true Topology-
Independent ISSU, an industry-first soware upgrade feature for a
fixed-configuration top-of-rack switch, is supported across all Layer
2 and Layer 3 protocols and doesn’t need the support of any other
switches to perform an image upgrade.
• Automation: The QFX5100 switches support a number of
features for network automation and plug-and-play operations.
Features include zero-touch provisioning, operations and event
scripts, automatic rollback, and Python scripting. The switch also
oers support for integration with VMware NSX Layer 2 Gateway
Services, Puppet, and OpenStack.
• Flexible Forwarding Table: The QFX5100’s Flexible Forwarding
Table (FFT) allows the hardware table to be carved into
configurable partitions of Layer 2 media access control (MAC),
Layer 3 host, and Longest Prefix Match (LPM) tables. In a pure L2
environment, the QFX5100 supports 288,000 MAC addresses.
In L3 mode, the table can support 128,000 host entries, and in
LPM mode, it can support 128,000 prefixes. Junos OS provides
configurable options through a command-line interface (CLI) so
that each QFX5100 can be optimized for dierent deployment
scenarios.
• Intelligent Buer Management: The QFX5100 switches have
a total of 12 MB shared buers. While 25% of the total buer
space is dedicated, the rest is shared among all ports and is user
Figure 2: QFX5100 at the aggregation layer
QFX5100 QFX3500 EX4300
10GbE
8x40GbE
320Gbps
Virtual Chassis
backplane
EX9200 with MC-LAG
1GbE
EX4300QFX5100 QFX5100 QFX5100
10GbE
QFX5100
Figure 3: Larger scale data center with Layer 3 to the access
QFX5100 QFX5100 QFX5100
QFX5100 QFX5100
E-BGP L3 ECMP
QFX5100
QFX5100 QFX5100
(12 Seiten)
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