When using a virtual private network (VPN module ) encryption card with a 3600 router with Ios 2.2 t...
When using a virtual private network (VPN module ) encryption card with a 3600 router with Ios 2.2 the error HW_VPN-1-HPRXERR: Hardware VPN0/2: Packet Encryption/Decryption error, status=4612 is displayed continuously.
Packets can be re-ordered at these three locations:
The encrypting peer
The decrypting peer
Note: The decrypting peer reorders packets very rarely. The only known scenario in which the decrypting peer reorders packets is when a packet is bumped to the process switch while the subsequent packets from the same tunnel are fast-switched or CEF-switched. This can occur for fragmented packets that need re-assembly.
These are some common scenarios in which out-of-order IPSec packets occur. These scenarios are considered normal behaviors:
Fragmentation: The decrypting peer uses process switching on fragmented packets. To minimize the impact of this problem, enable Look-Ahead-Fragmentation.
QoS: If the Quality of Service (QoS) scheduling mechanism is triggered after IPSec encryption, packets in the same IPSec Security Associations (SAs) can be transmitted out-of-order.
Pak_priority: pak_priority is an internal flag that Cisco IOS Software sets to some of the router-generated packets that are considered critical. Critical packets include routing updates and interface keepalives. When the output interface queue is congested, the router honors the pak_priority flags to ensure the transmission of high priority packets first. So in the Generic Routing Encapsulation (GRE) over IPsec and dynamic routing protocol design, the Encapsulating Security Payload (ESP) packets can become out-of-order if the egress interface is congested and the router has to transmit encrypted routing updates first.
As a workaround, perform these steps:
Issue theip mtu command to set the Maximum Transmission Unit (MTU) size of inbound streams to less than 1400 bytes.
Hi, i am using this FlexVPN "Hub to Spoke" configuration for my home lab hub router its using Keyring pre-shared key, and AAA is done locally. This work fine when the client is a router. However I want to modify this so that remote clients ...
Hi Experts,We're running ISE 2.6 with Patch 8 installed. AnyConnect is 4.8 and the Compliance Module is 4.3.X. I've been asked to configure a New AV Posture policy Definition check for Windows Defender. Name: AV_Def_5daysCompliance Module: 4.X ...
Hi We have about 1000 sites connected to a hub siteThe setup is DMVPN. And we are using Get VPN upon thisWe are using Cisco 898 with 2 links [local loop and 3G] for each branch We have a problem that suddenly most of our branches are facing a ne...
Hi AllIs it possible with Cisco AnyConnect secure mobility client to allow for multiple concurrent connections in macOS? Actually, I need to connect to multiple VPN hosts at the same time as I need to connect to servers hosted in a different location...