wsa.example.com (SERVICE)> dnsflush Are you sure you want to clear out the DNS cache? [N]> y
wsa.example.com (SERVICE)> upgrade Upgrades available: 1. AsyncOS 7.5.2 build 303 upgrade For Web ..... > The interface being used for upgrades cannot communicate to the upgrades server
This error may also be returned if the incorrect interface is being used for upgrades.
When M1 and P1 interfaces are used, depending on the network deployment, it is possible that only the P1 interface has Internet access and should be the correct interface to use for upgrades. If the WSA is configured to use M1 in such cases, then it could cause the upgrade fetch to fail, resulting in the "Failure downloading ..." error.
Here are instructions for changing the upgrade interface via the CLI:
Choose the operation you want to perform: - SETUP - Edit upgrade configuration. > setup Please select the upgrade source you want to use for AsyncOS updates: 1. Use Cisco update servers 2. Use own server > <Enter>
....... Choose the routing table to use 1. Data 2. Management > 1
..... Press <Enter> till you reach the CLI prompt ......
Note: Please note that the above changes will not take effect unless a 'commit' is issued.