发明名称 |
SIGNALING ALIASING CAPABILITY IN DATA CENTERS |
摘要 |
Techniques are described for signaling aliasing capability between routers in a multi-tenant data center that uses VPNs, such as Ethernet VPNs. In the multi-tenant data center, two or more PE routers may be connected to a CE router by a multi-homed L2 segment in an all-active mode. Aliasing refers to the ability of a PE router to signal that it can reach a given multi-homed L2 segment even when the PE router has learned no MAC addresses over that multi-homed L2 segment. The PE routers on the multi-homed L2 segment advertise aliasing capability using a route advertisement on a per-L2 segment basis. When the multi-tenant data center uses global VPN identifiers, no additional information is needed by a remote PE to build an ECMP next hop to the PE routers that support aliasing, and transmission of a route advertisement on a per-VPN basis may be suppressed. |
申请公布号 |
US2016134528(A1) |
申请公布日期 |
2016.05.12 |
申请号 |
US201414585841 |
申请日期 |
2014.12.30 |
申请人 |
Juniper Networks, Inc. |
发明人 |
Lin Wen;Venkatraman Vasudevan;Drake John E. |
分类号 |
H04L12/721;H04L12/715;H04L29/12;H04L12/46 |
主分类号 |
H04L12/721 |
代理机构 |
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代理人 |
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主权项 |
1. A method comprising:
establishing, between a first site and a second site of a multi-tenant data center, an Ethernet virtual private network (EVPN) including two or more provider edge (PE) routers connected to a customer edge (CE) router of the first site on a multi-homed Ethernet segment (ES) in an all-active mode, and at least one remote PE router; receiving, by a first PE router of the two or more PE routers on the multi-homed ES from the CE router, a packet with a media access control (MAC) address associated with the CE router; sending, by the first PE router to the at least one remote PE router, a MAC route advertisement including the MAC address associated with the CE router; and sending, by at least a second PE router of the two or more PE routers on the multi-homed ES to the at least one remote PE router, a per-ES auto-discovery (AD) route advertisement indicating whether the second PE router supports aliasing for the multi-homed ES. |
地址 |
Sunnyvale CA US |