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Data Center Infrastructure Design Guide 2.1— Readme File
OL-11568-01
What is Included in this DG Release?
Table 2 lists the technologies used in the data center infrastructure design documented in the previous
v1.1. Note that version 2.1 builds on the v1.1 and v 2.0 design recommendations and it is not intended
to be a replacement.
Environmental Designing for proper cabling,
cooling/airflow, and power
configurations
No
Network Management Using the NAM, CVDM,
CiscoWorks, Netflow, or other
management/configuration tools
No
Geographically dispersed clustering
(also known as stretch clusters)
Designing in support of extending
Layer 2 domains to support HA
clustering across metro or wide area
networks
No
CPU protection from STP loop
conditions
Design best practices in limiting the
impact of failures related to spanning
tree loop conditions
Yes
Spanning tree—Using 802.1w
Rapid PVST+ and 802.1s MST
Designing scalable spanning tree
domains using 802.1w and 802.1s
and related features
Yes
Layer 2 access design Designs using L2 looped and
loop-free access layer topologies
Yes
Layer 3 access design Designs using L3 access layer
topologies
No
Service layer switch design How to move service modules out of
the aggregation layer and into a
separate service switch chassis for
CSM and SSL modules
Yes
Distributed Forwarding Card
placement and benefits
Where to use DFC3 daughter cards to
improve distributed switching
performance in the data center
Covered in multi-tier and server
cluster architecture chapters
Yes
Enterprise campus segmentation The need to isolate/segment multiple
logical network environments on the
same physical network for
administration, security, or other
purposes.
This is covered outside of this
DG document.
No
Use of NSF/SSO for high
availability in the data center
Where to use redundant supervisors
in the data center architecture, and
designing to support required
failover times
Yes
Table 1 Cisco Data Center Technologies and DG Status (Continued)