I built a basic GNS3 Lab to get a better understanding of ISIS. I come from a BGP/OSPF background but we might be overtaking a network running ISIS and wanted to familiarize myself with it. I have 4 routers setup, R1 and R2 are L2 routers simulating my datacenter (area 0), R3 is a L1L2 router simulating a pop site (ABR), and R4 is a L1 router simulating a PE (normal area). Everything is working with the exception I was expecting a default route be injected in the L1 database as L2 routes are not advertised to L1 routers. I beleive this is default behavoir on cisco but doesn’t appear to be on arista nor do I see a “default information originate” i can envoke on the R3 for the L1 routers. I assume I have something missconfigure, i read the arista ISIS documentation and search the forums but couldn’t find my answer. I’m sure its something simple. I included all relivant info. Appreciate any help!
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