[LS-762] Airtel_Routing Issue – “Source Site Isolated” and “Isolated Island” Errors_All Prod Created: 30/Oct/25  Updated: 27/Nov/25  Due: 04/Nov/25  Resolved: 27/Nov/25

Status: Rejected
Project: L3 Support
Component/s: NEP
Affects Version/s: None
Fix Version/s: None

Type: Bug Priority: Normal
Reporter: Priyasha Tiwari Assignee: Priyasha Tiwari
Resolution: Done Votes: 0
Labels: NEP_D
Remaining Estimate: 0 minutes
Time Spent: 2 hours
Original Estimate: Not Specified

Attachments: PNG File RB ISSUE IDU REPORT.png     PNG File RB ISSUE IP DATA.png     PNG File RB ISSUE SITE ID VIEW.png     PNG File RB ISSUE TRLINK REPORT.png     PNG File RB ISSUE.png     PNG File tr_link.png    
Customer:
Airtel India
Planned Start:
Planned End:
Rejected By: Bessem Manita
Actual Start:
Date of Baselining:

 Description   

In the Routing Report, we are observing the errors “Source Site Isolated” and “Isolated Island” across multiple sites, even though MW links and Source IPs are available.

A reference site from the AP Circle has also been attached for your review.

Ref Node id :- AP-NLATMK05-1 site id – ATMK05_AP

 Comments   
Comment by Priyasha Tiwari [ 31/Oct/25 ]

will add details and screenshot after analysis

Comment by Bessem Manita [ 27/Nov/25 ]

Dear Priyasha,

The issue mentioned below is not actually a problem. The RB was triggered on 26 October. For site ATMK05_AP, there was no TR link at that time. The TR link was only inserted on 30 October, which means the site was isolated when the RB was triggered.

The screenshot below shows the TR link and its creation date.

The latest RB report also shows a different error for the same site.

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