Emergency maintenance will be performed on the University's caching proxy servers, starting at 7.30PM tonight (22 Oct). The work should be complete by 10PM. During the maintenance, you can expect slow or intermittent access to off-campus web sites (other Internet traffic should not be affected).

Over the last few days, one of the proxy servers has been intermittently unavailable, likely due to a faulty network card. This network card will be replaced. In addition, the network card in the other proxy server will be replaced as a preventative measure. Only one of the two proxy servers will be unavailable at a time; the other will still provide access to the web.

Whilst it is being performed in a minor maintenance window, this is necessary emergency maintenance that cannot be deferred without risking further outage.