Cisco Cisco Expressway Installation Guide
Additional information
Upgrading a VM Expressway
When upgrading a VM Expressway you must use a .tar.gz file (available from the software download site),
not an .ova file:
not an .ova file:
1. To avoid any performance degradation we recommend that you upgrade the Expressway while the
system is inactive.
2. If the Expressway is part of a cluster, follow the relevant Expressway Cluster Deployment Guide.
3. If the Expressway is not part of a cluster:
a. Log in to the Expressway VM web interface as an administrator.
b. Backup the Expressway from the
b. Backup the Expressway from the
Backup
page (
Maintenance > Backup and restore
).
c. Upgrade the Expressway from the
Upgrade
page (
Maintenance > Upgrade
).
Clustering for resilience and capacity
When clustering VM Expressways it is strongly recommended to use at least two physical hardware hosts –
clustered Expressways are designed to support resilience and capacity.
clustered Expressways are designed to support resilience and capacity.
To support hardware resilience, Expressway peers must run on at least two different hardware platforms.
Each and every Expressway peer in a cluster must be within a 15ms hop (30ms round trip delay) of each and
every other Expressway in or to be added to the cluster.
every other Expressway in or to be added to the cluster.
Supported features
vMotion
vMotion has been tested and Expressway will move (migrate) successfully. If you need to move
Expressway to a new host you must perform a host migration via vMotion.
Expressway to a new host you must perform a host migration via vMotion.
There may be glitches (packet loss/jitter) in media for calls that are interworked by Expressway as the VM is
moved. We recommend that a vMotion move is carried out when there is low call activity on the VM
Expressway.
moved. We recommend that a vMotion move is carried out when there is low call activity on the VM
Expressway.
SAN with Fibre interconnect
Use of a SAN with Fibre interconnect, rather than a NAS, is recommended in order to maximize the transfer
speed.
speed.
Unsupported features
VMware fault tolerant mode
VMware fault tolerant mode is not supported (because the Expressway uses multiple cores).
Cisco Expressway on Virtual Machine Installation Guide (X8.2)
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Additional information