Redistribution issue between two routing protocol

Created: Apr 1, 2017 08:09:40Latest reply: Apr 1, 2017 09:16:56 1025 1 0 0

There is redistribution issue between two routing protocol. For OSPF, administrative distance of internal OSPF
route is 10. But the administrative distance of external OSPF route is 150. The
administrative distance of ISIS is 15. Customer found that there is packet loss
and sometimes network unreachable from ISIS network to OSPF external route
network.

x
convention：

Helpful (0) Favorite(0) Report

ms.america Created Apr 1, 2017 09:16:56

In this case, customer only performs simple redistribution without any
route protection feature. Suboptimal route occurred which resulted in network
unreachable.

To improve this situation, we use filter policy to filter the OSPF
external route at another switch in ISIS.

Two switch configuration:

Isis

Filter-policy ip-prefix filter import

Ip ip-prefix filter deny 192.168.1.0 24

Ip ip-prefix filter permit 0.0.0.0 0 less-equal 32<?xml:namespace prefix = "o" />

x
convention：

Comment

Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:

Politically sensitive content
Content concerning pornography, gambling, and drug abuse
Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy

Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " Privacy."

Enterprise

Consumer

Corporate

Carriers

Redistribution issue between two routing protocol

Third Party’s Trade Secret