发明名称 |
Connecting layer-2 domains over layer-3 networks |
摘要 |
In one embodiment, a method includes building an address resolution cache for a layer-3 router in a first layer-2 datacenter, where the address resolution cache includes a plurality of entries, each of the entries containing a host network address, a host hardware address, and a switch identifier for a switch serving a host, intercepting an address resolution flood within the first layer-2 datacenter that seeks address resolution for a host in a second layer-2 datacenter, and generating a response to the address resolution flood that indicates a source in the second layer-2 datacenter, where data indicating the source in the second layer-2 datacenter is accessed from the address resolution cache. |
申请公布号 |
US9331974(B2) |
申请公布日期 |
2016.05.03 |
申请号 |
US201213349376 |
申请日期 |
2012.01.12 |
申请人 |
Cisco Technology, Inc. |
发明人 |
Moreno Victor;Rao Dhananjaya;Sane Sanjay;Merchant Sameer;Grover Hasmit |
分类号 |
H04L12/28;H04L29/12;H04L12/701;H04L12/721;H04L12/747 |
主分类号 |
H04L12/28 |
代理机构 |
Haynes and Boone, LLP |
代理人 |
Haynes and Boone, LLP |
主权项 |
1. A method comprising:
performing the following actions in a layer-3 router in a first layer-2 datacenter: building an address resolution cache for the layer-3 router in the first layer-2 datacenter, where the address resolution cache includes a plurality of entries, each of the entries containing a host network address, a host hardware address, and a switch identifier for a switch serving a host; intercepting an address resolution flood within the first layer-2 datacenter that seeks address resolution for a host in a second layer-2 datacenter; and generating a response to the address resolution flood that indicates a source of the response is a switch in the second layer-2 datacenter, where data indicating the source in the second layer-2 datacenter is accessed from the address resolution cache. |
地址 |
San Jose CA US |