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When the Firewall Works in Transparent Mode, OSPF Neighbor Relationships Cannot be Established

Publication Date:  2012-07-17 Views:  715 Downloads:  0

Issue Description

When the firewall works in transparent mode, OSPF neighbor relationships cannot be established.

Alarm Information

None.

Handling Process

In the system view, run the following command:
[USG5300]firewall unknown-mac multicast flood     //for transparent transmission of multicast packets

Root Cause

When the firewall works in transparent mode, it does not allow multicast packets through by default. OSPF packets are multicast packets, so request packets for establishing neighbor relationships are not allowed through the firewall. As a result, neighbor relationships cannot be established.

Suggestions

None.

END