Critical Routing Instability
Minor incident
Core Network
East
Router1
North
Router2
2026-05-21 13:42 BST
· 11 hours, 2 minutes
Updates
Resolved
May 22, 2026 · 00:43 BST
Cisco prescribed changes have been applied and routing engines restarted, and all seems well.
We will continue to monitor over the coming days, and thank you for your patience.
De-escalate
May 21, 2026 · 15:47 BST
Following some reconfiguration, we are happy routing is acceptable stable and performing within expectations.
Emergency router reboots will commence shortly after 11pm to permanently implement the changes needed.
Investigating
May 21, 2026 · 13:52 BST
Some reconfiguration has returned relatively stability. The incident is still under investigation
Issue
May 21, 2026 · 13:04 BST
We are aware of a critical routing instability between a pair of our core routers and are acttively working on a resolution
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