Please be advised of the following maintenance window scheduled on our network and those of other UK ISPs: 

Date: Tuesday, 12th February 2013

Start time: 23:00 UTC

End time: 06:00 UTC 

Purpose 

As part of the expansion of the LONAP Internet Exchange, of which we are member, some renumbering work is require

Impact 

Due to our redundant network connectivity and peering arrangements, we are expecting no significant operational impact from this work.

However, routing to certain destinations may be suboptimal during this window. The observed consequences of this may be slightly increased latency or packet loss. 

We will be performing our changes at the beginning of this maintenance window, however there is a seven hour window for other ISPs to complete their work. While we are hopeful that all members complete their renumbering in a timely manner, there remains the possibility that some members will take longer to complete, so please be warned of possible suboptimal routing beginning on 12/2. 

Please note that is not specific to Sargasso Networks and will affect all UK and international ISPs that connect to LONAP. We will be monitoring the migration carefully, but it will be largely out of our hands, in the control only of those ISPs who are late to renumber.

Nevertheless, we will ensure that our critical peering partners including our IP Voice services are not adversely affected.