OSPF over IPSEC between Huawei Firewall and Cisco Router
A network Engineer always has two solutions for a problem either search over the internet or go for TAC support. As per my practice i try both sometime first one gets failed, so you know failover happen. I am writing this blog so guys searching to solve OSPF problem can use first option. I was creating OSPF neighborship between Huawei Firewall and Cisco router, but it was in init state always so started debugging on router as well as on firewall what i found was interesting. Below are the steps of Troubleshooting: 1)Cisco router was sending the Hello Packets towards the peer but no Hello reach at Cisco end over the IPSEC tunnel. 2)Huawei Firewall playing well was receiving the Hello packets on tunnel interface and also sending back (only in debug) so I was like All well at Huawei end so start looking at Cisco end and also on Huawei firewall policies, as it was IPSEC tunnel, so policies was ruled out now culprit was Cisco Router and i was into it to find out. 3)I try my best to ge...