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NE40 Imports EBGP Default Route to ISIS

Publication Date:  2012-07-27 Views:  4 Downloads:  0
Issue Description
Topology: GSR12000    GSR12000
          |       |
      NE40-1-----NE40-2
          |  ×    |
         NE08  NE05
Two GSR routers belong to one AS100 and distribute default route to NE40. Two NE40 belong to another AS101. Internal IGP protocol of AS101is level2 ISIS; NE08 and NE05 balance uplink. It need import default route distributed by EBGP to ISIS.
Alarm Information
Null
      
Handling Process
Configure route filter at NE40 when imorting EBGP default route at NE40.Filter all default route from import direction.
      
Root Cause
When two NE40 at ISIS import EBGP default route from opposite device at the same time, two NE40 at ISIS will import defalut route. Normal packet cannot be forwarded .
Suggestions
Null

END