Hi Huaimo, > Differences between OSPF TTZ and OSPF Area Proxy (note: assume that OSPF > Area Proxy is similar to IS-IS Area Proxy even though OSPF Area Proxy is not > defined in the Area Proxy draft) include:
That’s an unfortunate assumption. We have not defined OSPF Area Proxy because it’s frankly well outside of our expertise. The hierarchical structures of OSPF and IS-IS are intrinsically different. While legacy IS-IS allows L2 traffic to transit an L1L2 area, my understanding is that when OSPF traffic leaves Area 0, it won’t be coming back. While I don’t particularly like this aspect of the OSPF architecture, it’s NOT what we were out to fix. So, please don’t assume anything about OSPF Area Proxy. Tony
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