Data Center LAN Migration Guide - Juniper Networks
Data Center LAN Migration Guide - Juniper Networks
Data Center LAN Migration Guide - Juniper Networks
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<strong>Data</strong> <strong>Center</strong> <strong>LAN</strong> <strong>Migration</strong> <strong>Guide</strong><br />
Trigger Events, Insertion Points, and Design Considerations<br />
To summarize the preceding discussions, the table below highlights the mapping between a trigger event, the<br />
corresponding network insertion point, and the network design considerations that are pertinent in each of the data<br />
center tiers.<br />
Table 1: Trigger Event Design Consideration Summary<br />
TRIGGER EVENT NETWORK INSERTION LAyER(S) DESIGN CONSIDERATIONS<br />
New application or service New switching infrastructure for: Top–of-rack or end-of-row deployment<br />
Technology refresh<br />
• Access<br />
Cabling changes<br />
Server virtualization<br />
• Aggregation<br />
Traffic patterns among servers<br />
• Core<br />
V<strong>LAN</strong> definitions for applications/services segmentation<br />
L2 domain for VM workload mobility<br />
Server connectivity speed: GbE/10GbE<br />
• Application latency requirements<br />
• Network interface card (NIC) teaming<br />
• Fibre Channel Storage Network Convergence<br />
Uplinks<br />
• Uplink oversubscription ratios<br />
• Number and placement of uplinks<br />
• GbE/10GbE uplinks<br />
• Use of L2 or L3 for uplinks<br />
• IEEE Spanning Tree Protocol (STP)<br />
• Redundant trunk groups as STP alternative<br />
- Link aggregation sizing/protocol<br />
QoS<br />
• Classification and prioritization<br />
• Policing<br />
High availability (HA) requirements<br />
Multicast scalability/performance requirements<br />
Interoperability testing definitions<br />
IOS configuration for conversion to Junos OS<br />
<strong>Data</strong> center consolidation Aggregation/core layer<br />
Sufficiency of existing physical capacity<br />
Access layer<br />
Interior gateway protocol (IGP) and exterior gateway<br />
Services layer<br />
protocol (EGP) design<br />
Multicast requirements<br />
L2/L3 domain boundaries<br />
IEEE STP<br />
Default gateway/root bridge mapping<br />
Virtualized services support requirements (VPN/VRF)<br />
Uplinks<br />
Density<br />
Speed<br />
Link aggregation<br />
Scaling requirements for MAC addresses and ACLs<br />
Latency requirements<br />
Fibre Channel Storage Network Convergence<br />
HA features<br />
QoS<br />
Security Policies<br />
• Existing policy migration<br />
• ACL migration<br />
• New policy definitions<br />
Interoperability testing definitions<br />
IOS configuration for conversion to Junos OS<br />
30 Copyright © 2012, <strong>Juniper</strong> <strong>Networks</strong>, Inc.
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