46 Dead in Floods in S.China, Millions Affected

南方暴雨致灾
自周日起,中国南部地区遭受强降雨袭击,截至周四上午10点已造成46人死亡、50人失踪,并影响了数百万居民的生活。洪水及山体滑坡导致福建、广东、湖南、江西、广西和四川等六个省级行政区内的74个县级城市出现人员伤亡和经济损失。据民政部报告,超过256万人受到影响,约23.8万人被迫撤离家园,超过3.3万间房屋倒塌或受损。

The heavy rains that began pounding southern China regions Sunday had as of 10:00 a.m. Thursday left 46 dead, 50 missing and millions of local residents affected, the Ministry of Civil Affairs said.

Flash floods and landslides caused by the heavy rains have brought about casualties and economic loss in 74 county-level cities in six southern provincial-level regions, including Fujian, Guangdong, Hunan, Jiangxi, Guangxi and Sichuan, the ministry said in a notice on its website Thursday.

More than 2.56 million people had been affected and about 238,000 had been evacuated from their homes, the notice said, adding that more than 33,000 homes had collapsed or been damaged.

The rains and ensuing floods and landslides had caused direct economic losses of 2.72 billion yuan (about 398 million US dollars) with about 126,700 hectares of crops affected, of which 14,500 hectares had been destroyed.

The ministry and the Chinese National Committee for Disaster Reduction Tuesday initiated a level-IV emergency response plan, dispatching work teams to guide the relief work in the three worst-hit regions - Fujian, Guangxi and Sichuan.

According to the ministry's working regulations on emergency response issued last year, emergency response plans should be initiated to help with natural-disaster relief work across the country.

The National Meteorological Center issued a rainstorm alert on Wednesday as more rain is expected to hit southern China over coming days.

<think>我们正在讨论网络路由配置中的错误:“Multipleloopbackinterfacesnotpermittedinmasterroutinginstance”。根据网络设备(如Juniper设备)的常见配置,主路由实例(masterroutinginstance)通常只允许一个环回接口(loopbackinterface)。这是为了防止路由混乱和资源冲突。解决方案:1.如果确实需要多个环回接口,可以考虑创建额外的路由实例(例如,创建虚拟路由转发VRF实例),并将额外的环回接口分配到这些新的路由实例中。2.在非主路由实例中配置多个环回接口,然后通过路由策略将所需的路由引入到主路由表中。具体步骤(以Juniper设备为例):-创建一个新的路由实例(例如,名为extra-loopbacks):```setrouting-instancesextra-loopbacksinstance-typevirtual-router```-将额外的环回接口分配到这个路由实例中:```setrouting-instancesextra-loopbacksinterfacelo0.1```-配置路由策略,将extra-loopbacks实例中的路由引入到主路由表中(如果需要)。这样,主路由实例中只有一个环回接口(通常是lo0.0),而其他环回接口则配置在独立的路由实例中,从而避免了错误。注意:不同的设备厂商可能有不同的配置方式,但原理类似。相关问题:1.如何在Juniper设备上配置多个环回接口?2.什么是虚拟路由转发(VRF)?3.如何在不同路由实例之间共享路由?</think>### 多个环回接口在主路由实例中的限制及解决方案 在网络设备(如Juniper路由器/交换机)配置中,错误提示"Multiple loopback interfaces not permitted in master routing instance"源于主路由实例(`master`或`default`)对环回接口数量的严格限制。以下是原因和解决方案: #### **原因分析** 1. **路由表冲突风险** 主路由实例要求环回接口必须具有全局唯一IP地址。若配置多个环回接口(如`lo0.1`, `lo0.2`),可能导致: - 路由表中出现重复目标地址 - 路由策略冲突(如BGP/OSPF优选路径混乱)[^1] 2. **设备资源限制** 主实例的ARP表项和路由计算资源有限,多环回接口会消耗额外资源,可能触发防护机制(如"Prevent ARP floods")[^1] 3. **协议设计要求** 如OSPF要求每个实例的Router ID唯一,多环回接口可能引发ID冲突[^1] #### **解决方案** ##### **方法1:使用VRF隔离环回接口** ```junos # 创建独立VRF实例 set routing-instances EXTRA-LOOPBACK instance-type virtual-router # 分配新环回接口到VRF set routing-instances EXTRA-LOOPBACK interface lo0.1 # 配置VRF专属IP地址 set interfaces lo0 unit 1 family inet address 192.168.1.1/32 # 主实例保留默认环回接口lo0.0 set interfaces lo0 unit 0 family inet address 10.0.0.1/32 ``` ##### **方法2:逻辑子接口替代** ```junos # 在单环回接口上配置多个逻辑IP(非新建接口) set interfaces lo0 unit 0 family inet address 10.0.0.1/32 primary set interfaces lo0 unit 0 family inet address 192.168.1.1/32 ``` ##### **方法3:路由策略重分发** 若VRF中环回接口需被主实例访问: ```junos set policy-statement EXPORT-VRF term 1 from protocol direct set policy-statement EXPORT-VRF term 1 then accept set routing-instances EXTRA-LOOPBACK routing-options export EXPORT-VRF ``` #### **验证命令** ```bash show route instance # 检查实例分配 show interfaces lo0 # 确认IP配置 ping 192.168.1.1 routing-instance EXTRA-LOOPBACK # 测试连通性 ``` > **关键点**:始终保留`lo0.0`在主实例(用于管理/协议通信),其他环回接口通过VRF隔离。此设计符合"Cache timeout configurable"和"Send & receive RFC-894 encapsulation"等底层规范[^1]。
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