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Cisco Bug: CSCvv05776 - CXP Probe DNS packets are not exiting via correct source interface

Last Modified

Aug 25, 2020

Products (1)

  • Cisco XE SD-WAN Routers

Known Affected Releases

Amsterdam-17.2.1

Description (partial)

Symptom:
1. Create 2 default routes via IF1 and IF2.
2. Configure Cloudexpress Probe via IF1.
3. DNS Packets of Cloudexpress probe is exiting via IF2 but it should go via IF1 (as this is the preferred interface as per the cloudexpress probe config)

If the IF1 is not pointing to internet, the DNS request of the Cloudexpress will be lost and this will lead to 100% loss in cloudexpress probes.

Conditions:
Only if there are more than one default route (i.e for a given route if there are more than one valid exit interface)
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Bug Details Include

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  • Status
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