Circular Route Between 3 x EAGLEs for a Prohibited Destination

Asset ID:	1-72-2135497.1
Update Date:	2016-05-13
Keywords:

Solution Type Problem Resolution Sure

Solution 2135497.1 : Circular Route Between 3 x EAGLEs for a Prohibited Destination

Applies to:

Oracle Communications EAGLE (Software) - Version EAGLE 3x.x and later
Information in this document applies to any platform.

Symptoms

There is an allowed route toward the DPC 1065 thru 3 x Eagles despite the fact that the DPC 1065 is prohibited.

eaglestp 16-04-07 16:19:27 EST EAGLE5 45.0.1-64.70.35
DPCN PST SST AST
01065 IS-ANR Restrict ACCESS
ALARM STATUS = * 0312 DPC is restricted
RTE COST LSN        APC    LS STAT    NON-ADJ ROUTE STAT
1   10   dest1065   01065 Prohibit   Allowed Prohibit
2   20   stp01      01066 Allowed    Prohibit Prohibit
3* 30   stp02      01067 Allowed    Allowed Allowed

Cause

Eagle STP02 has likely not received the TFP message for the destination 1065 on the linkset toward 1065.

Eagle needs to receive a TFP to declare a destination as prohibited. For this, MSUs have to be sent to the destination in order to received the TFP in response.

ITU Q.704 says that an STP will send a TFP to all the adjacent point codes when a point codes is inaccessible, and every time that any node in the network sends traffic to the STP for the node that is prohibited. Once the first TFP has been sent, the Eagle will only generate TFP as a response to a node that keeps trying to route traffic to a prohibited node

Solution

To get the GTWY-LNKSET measurements of Eagle STP02 of the day of the deleting/re-entering of the route to 1065 thru STP01, which cleared the issue.
The idea is to check the receiving of TFP messages.

Attachments

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