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Cisco Bug: CSCsg35358 - No OSPF adjacency when WS-SVC-IPSEC-1 is first installed

Last Modified

Jan 28, 2017

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)


When WS-SVC-IPSEC-1 is install into router and router is reconfigured to use the module, OSPF does not come up. A reload of router is required.


Two 7606 route connected via a T3. IPsec VPN encryption is configured on the logical interface vlan100 which the T3 serial interface (s1/0/0) is binded to.

On router_a, following was configured:-

int vlan100
int s1/0/0
no crypto connect vlan 100
ip address

and OSPF adjacency came up fine. Customer did this to replace their faulty WS-SVC-IPSEC-1 module. When new WS-SVC-IPSEC-1 was put back into router_a, customer configure this:-

int s1/0/0
no ip address
crypto connect vlan 100
int vlan100
no shut

and OSPF adjacency could not come up. clear ip ospf proc had not affect. router_a had to be reloaded for OSPF adjacency to come up.
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