I have an annoying problem. I have a Cisco 871W router with a VPN tunnel to another location that works fine. If the tunnel is up, UMA enabled phones won't work on the connection and the router will log this error:
*Mar 29 01:44:37.791: %CRYPTO-4-RECVD_PKT_INV_SPI: decaps: rec'd IPSEC packet has in
valid spi for destaddr=xx.xx.x.xx, prot=50, spi=0x8884FEDE(2290417374), srcaddr=20
If I remove the crypto map off the external interface (FastEthernet 4) the UMA enabled phones work fine, but no VPN tunnel (obviously)! I even tried changing the VPN protocol from ESP to AH.
Does anyone know how I can have the tunnel up and also have the UMA phones work too?
Attached is the config... Does anyone have any suggestions on how I can fix this or how I should modify my config?