Configuring IS-IS on partially-meshed multi-access WAN network

If someone insists on running IS-IS on a partially-meshed Frame Relay network without using subinterfaces (which is the proper way of doing it), it can still be done … assuming you understand what’s going on and properly configure the IS-IS routers.

Read the configuration guidelines in the CT3 wiki.

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Ivan Pepelnjak, CCIE#1354, is the chief technology advisor for NIL Data Communications. He has been designing and implementing large-scale data communications networks as well as teaching and writing books about advanced technologies since 1990. See his full profile, contact him or follow @ioshints on Twitter.