L2L VPN between cisco asa & USG6300

I would like to add notes,
I used same configuration L2L VPN, Cisco asa version 8 & USG6300 V500R001C60SPC500,
It's working fine

Hi,
Does the default setting on ASA version 9.8 and version 8 are the same?
Commonly, the VPN doesn't establish due to the incompatible parameters.
Also, kindly check the ike sa status(if you are using IPSec) and any error logs on the firewall.

Hello,
Yes i used the configuration in asa v8 & USG6300 & i review it more than one time
Thanks

Hi,
The following is a general troubleshooting guide.
https://support.huawei.com/onlinetoolsweb/ptmngsys/Web/tsrev_security/en/content/security/34_edesk_ipsec_tunnel_configure_failed_V5R1/edesk_ipsec_tunnel_configure_failed_edesk000.html
If this guide is not used, please collect information and contact TAC for technical support.
Please click http://e.huawei.com/au/service-hotline

Since there is no problem with ASA version8, I think you should contact Cisco technical personnel to ask what is the difference between version 8 and 9.8 and then modify the configuration on the ASA.

Thank for your add on... well noted

HI all ,

kindly check bellow configuration
USG6300  

ipsec policy map1 10 isakmp

 security acl 3012

 ike-peer ike263123449214

 proposal prop26312344921

 tunnel local applied-interface

 alias TT

 sa trigger-mode auto

 sa duration traffic-based 5242880

 sa duration time-based 3600

ipsec proposal prop26312344921

 esp authentication-algorithm sha1

 esp encryption-algorithm aes-256

ike proposal 11

 encryption-algorithm aes-256

 dh group21

 authentication-algorithm sha2-256

 sa duration 28800

 authentication-method pre-share

 integrity-algorithm hmac-sha1-96 hmac-md5-96

 prf hmac-sha1 hmac-md5

ike peer ike263123449214

 undo version 1

 exchange-mode auto

 pre-shared-key 123

 ike-proposal 11

 remote-address XX.XX.XX.XX

ASA

crypto ipsec ikev2 ipsec-proposal TT

 protocol esp encryption aes-256

 protocol esp integrity sha-1

crypto ikev2 policy 60

 encryption aes-256

 integrity md5

 group 21

 prf md5

 lifetime seconds 28800

Hello all,

The issue has been fixed,
It was on isps , there's latency between two public ip addresses,
Thanks for all

Thank you