将 EVPN 主动-备用多宿主配置到单个 PE 设备
您可以通过配置备用(保护)接口为活动(保护)接口提供冗余,从而在单个 PE 设备上配置 EVPN 主动-备用多宿主。 图 1 显示了将主动-备用多宿主到单个 PE 设备的 EVPN 拓扑。保护接口可在发生故障时为受保护的主接口提供备份的优势。当主接口正常工作时,PE 设备将主接口用于网络流量。如果主接口发生故障,保护接口将变为活动状态,流量将切换到保护接口。当主接口返回时,主接口再次成为活动接口。
如果启用了连接故障管理 (CFM),保护接口将触发 CFM 将类型、长度和值 (TLV) 或远程缺陷指示 (RDI) 接口状态发送到客户边缘设备
在以下情况下,Junos OS 不支持保护接口:
EVPN-VXLAN
多溴联苯-EVPN
在已在 EVPN 多宿主中配置为 ESI 的接口上
要在路由实例中配置保护接口,请在路由实例中为 EVPN 配置保护接口和主接口,并将语句 protect-interface
包含在主接口层次结构中。
routing-instances { routing-instance-name{ instance-type type; interface primary-interface-name { protect-interface protect-interface-name } interface protect-interface-name } route-distinguisher (as-number:number | ip-address:number); vrf-target community; }
要在路由实例中配置保护接口,请在路由实例中为 EVPN-VPWS 配置保护接口和主接口,并将该 protect-interface
语句包含在协议层次结构中 evpn
。
routing-instances { routing-instance-name { instance-type evpn-vpws; interface primary-interface-name ; interface protect-interface-name; route-distinguisher (as-number:number | ip-address:number); vrf-target community; protocols { evpn { interface primary-interface-name { vpws-service-id { local service-id; remote service-id; } protect-interface protect-interface-name } } } } }
要在网桥域中配置保护接口,请在网桥域中配置保护接口和主接口,并将语句包含在 protect-interface
主接口层次结构中。
bridge-domains { bridge-domain-name{ domain-type bridge; vlan-id number; interface primary-interface-name { protect-interface protect-interface-name } interface protect-interface-name } }
要显示保护界面,请使用 show evpn instance extensive
操作命令。
user@PE1> show evpn instance extensive Instance: blue Route Distinguisher: 10.255.255.1:100 Per-instance MAC route label: 299776 MAC database status Local Remote MAC advertisements: 0 0 MAC+IP advertisements: 0 0 Default gateway MAC advertisements: 0 0 Number of local interfaces: 5 (5 up) Interface name ESI Mode Status AC-Role ae0.0 00:11:22:33:44:55:66:77:88:99 all-active Up Root ge-0/0/3.0 00:00:00:00:00:00:00:00:00:00 single-homed Up Root ge-0/0/4.0 00:11:11:11:44:55:66:77:88:99 all-active Up Root ge-0/0/4.1 00:22:22:22:44:55:66:77:88:99 all-active Up Root ge-0/0/4.50 00:00:00:00:00:00:00:00:00:00 single-homed Up Root Number of IRB interfaces: 1 (0 up) Interface name VLAN VNI Status L3 context irb.1 25 Down vrf Number of protect interfaces: 1 Interface name Protect Interface name Status ge-0/0/3.1 ge-0/0/4.50 Protect-inactive
该 show interfaces detail
命令显示保护接口具有 CCC 关闭状态。
user@PE1> show interfaces ae0.0 detail Logical interface ae80.0 (Index 399) (SNMP ifIndex 612) (Generation 223) Flags: Up SNMP-Traps CCC-Down 0x20004000 VLAN-Tag [ 0x8100.10 ] Encapsulation: VLAN-Bridge Statistics Packets pps Bytes bps Bundle: Input : 0 0 0 0 Output: 0 0 0 0 Adaptive Statistics: Adaptive Adjusts: 0 Adaptive Scans : 0 Adaptive Updates: 0 Link: ge-0/1/8.0 Input : 0 0 0 0 Output: 0 0 0 0 Aggregate member links: 1 Marker Statistics: Marker Rx Resp Tx Unknown Rx Illegal Rx ge-0/1/8.0 0 0 0 0 Protocol bridge, MTU: 1522, Generation: 263, Route table: 11, Mesh Group: __all_ces__