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Cisco Bug: CSCvu57698 - ENH: The ablity to adjust the rekey margin time for IPSEC SPI's

Last Modified

Jun 10, 2020

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases

Fuji-16.9.2

Description (partial)

Symptom:
The Issue seems to be when creating SPI's with AWS. 

The way AWS is designed to work is when the two devices do a rekey it will start to use the new SPI immidiately. 

The way our products are designed is the generate the new SPI, but continue to use the old SPI until the lifetime expires so traffic in transit is not dropped. This is causing the tunnel to drop all traffic as were seeing invalid spi errors until the lifetime expires. 

Crypto invalid spi recovery is configured on the device and does not mitigate the issue.

Conditions:
ASR 1001-HX
IKEv1
AWS
SVTI
security-association lifetime kilobytes disable
security-association lifetime seconds 3600

Cisco IOS XE Software, Version 16.09.02
Cisco IOS Software [Fuji], ASR1000 Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 16.9.2, RELEASE SOFTWARE (fc4)
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