Riverbed SteelHead 3070-SD, User Manual

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Configuring High Availability on SteelHead SD | 91
10
Configuring High Availability on SteelHead
SD
This topic describes how to configure high availability (HA) on SteelHead SD 2.0. It includes these
sections:
• “Overview of HA on SteelHead SD” on page 91
• “Prerequisites” on page 94
• “Configuring a SteelHead SD HA pair” on page 94
• “Monitoring a high-availability pair” on page 101
• “Troubleshooting” on page 103
Note: Previous versions of SteelHead SD supported an active-passive HA scheme. You can’t upgrade your SteelHead
SD 1.0 (SCM 2.10) HA seamlessly to SteelHead SD 2.12 HA. You must first manually unpair your master and backup
appliances in SCM, upgrade from SteelHead SD 1.0 (SCM 2.10) to SteelConnect 2.12, and reconfigure HA in SCM.
Overview of HA on SteelHead SD
SteelHead SD provides active-active HA for 570-SD, 770-SD, and 3070-SD appliances.
Note: SteelConnect 2.12 provides active-active HA for SteelConnect SDI-2030 appliances located at the data
center.
With active-active HA support, when a fault is detected, traffic is immediately routed to the peer
appliance so that both appliances function in tandem. Traffic can be sent over any uplink regardless of
the role assigned to the SteelHead SD appliance (that is, master or backup appliance). Active-active HA
simplifies the configuration of uplinks for the HA pair of appliances.
Figure 10-1 shows an example of a symmetric deployment where the SteelHead SD HA pair are both
connected to WAN 1 and WAN 2 via four uplinks.
Figure 10-1. Active-active HA deployment at the branch