28岁贷款150万买大平层，今天接房，我却后悔了#买房知识，下面是重庆法拍小表妹给大家的分享，一起来看看。
150万商业贷款
28岁贷款150万买大平层。今天接房、我却后悔了。我承认我现在慌了。28岁贷款150万，买了一套大平层，每个月的房贷是6500，2019年买的房子还30年。说实话，到今年我都有点还不动了。现在我都30岁了，等全部还完差不多都60多岁。房子在去年12月份的时候都已经交房了，现在装修的还没有着落，房贷马上也要还不上了。
买房的时候，我信誓旦旦且且的想，难就难那么几年，咬咬牙挺一挺就过去了。结果现在行业也不景气，我也失业了。但是又不想向父母开口。父母两个都60多岁了，而且好身体不是很好。今年上个月又刚刚做了手术。如果向父母开口，父母也会担心，咬一咬牙，捣腾了好几张信用卡才勉强没有断供。30多岁的我，为什么就活成了现在这个样子？那是我朋友圈的一个真实故事。
如果你现在没有稳定的收入，最好别举全家之力去买房，否则要你命的不是几十万的首付，而是二三十年的房贷。
150万房贷20年总共利息多少
OSPF路由比较规则：
区域内路由 > 区域间路由 > 外部路由同是 type 1 类路由，开销相加进行比较同是 type 2 类路由，先比较外部，如果外部一样，再比较内部一条 type 1 类路由 和 一条 type 2 类路由 比较，type 1 > type 2练习1：以下两种路由，哪条路由更优？
路由1：LSA3路由，成本是10
路由2：LSA2路由，成本是1
答案：路由2更优
区域内路由 > 区域间路由 > 外部路由
在R3上查看
在R3上看12.0.0.0属于区域间路由
<R3>display ospf routing OSPF Process 1 with Router ID 3.3.3.3 Routing Tables Routing for Network Destination Cost Type NextHop AdvRouter Area 23.0.0.0/24 1 Transit 23.0.0.3 3.3.3.3 0.0.0.0 34.0.0.0/24 1 Transit 34.0.0.3 3.3.3.3 0.0.0.1 12.0.0.0/24 2 Inter-area 23.0.0.2 2.2.2.2 0.0.0.0 Total Nets: 3 Intra Area: 2 Inter Area: 1 ASE: 0 NSSA: 0 此时在R4上也创建一个12.0.0.4/24的IP，并宣告到区域一中
<R3>display ospf lsdb OSPF Process 1 with Router ID 3.3.3.3 Link State Database Area: 0.0.0.0 Type LinkState ID AdvRouter Age Len Sequence Metric Router 2.2.2.2 2.2.2.2 217 36 80000012 1 Router 3.3.3.3 3.3.3.3 210 36 80000012 1 Network 23.0.0.3 3.3.3.3 210 32 8000000F 0 Sum-Net 34.0.0.0 3.3.3.3 254 28 8000000E 1 Sum-Net 12.0.0.0 2.2.2.2 259 28 8000000E 1 Sum-Net 12.0.0.0 3.3.3.3 125 28 80000001 2 Area: 0.0.0.1 Type LinkState ID AdvRouter Age Len Sequence Metric Router 4.4.4.4 4.4.4.4 66 48 8000001F 1 Router 12.0.0.5 12.0.0.5 74 36 80000003 1 Router 3.3.3.3 3.3.3.3 210 36 80000011 1 Network 34.0.0.4 4.4.4.4 207 32 8000000F 0 Network 12.0.0.4 4.4.4.4 66 32 80000002 0 Sum-Net 23.0.0.0 3.3.3.3 254 28 8000000E 1<R3>display ospf routing OSPF Process 1 with Router ID 3.3.3.3 Routing Tables Routing for Network Destination Cost Type NextHop AdvRouter Area 23.0.0.0/24 1 Transit 23.0.0.3 3.3.3.3 0.0.0.0 34.0.0.0/24 1 Transit 34.0.0.3 3.3.3.3 0.0.0.1 12.0.0.0/24 2 Transit 34.0.0.4 4.4.4.4 0.0.0.1 Total Nets: 3 Intra Area: 3 Inter Area: 0 ASE: 0 NSSA: 0 可以发现，在区域1中，区域内的12.0.0.4的2类LSA 比 区域间的12.0.0.0的3类LSA优先
2类LSA出现在路由表中
练习2：以下两种路由，哪条路由更优？
路由1：外部路由 LSA5，外部成本是20，内部成本是1，cost-type 1
路由2：外部路由 LSA5，外部成本是10，内部成本是11， cost-type 1
答案：路由1与路由2等价
同类型外部路由进行比较
R1配置回环口并引入sysint lo 100ip add 100.100.100.100 32ip ip-prefix admin permit 100.100.100.100 32route-policy admin permit node 10if ip-prefix adminospf 1import-route direct route-policy admin type 1 cost 20sysint lo 100ip add 100.100.100.100 32ip ip-prefix admin permit 100.100.100.100 32route-policy admin permit node 10if ip-prefix adminospf 1import-route direct route-policy admin type 1 cost 10int g0/0/0ospf cost 11发现 100.100.100.100 从R1发过来的开销是 20
发现 100.100.100.100 从R3发过来的开销是 10
<R2>display ospf lsdb OSPF Process 1 with Router ID 2.2.2.2 Link State Database Area: 0.0.0.0 Type LinkState ID AdvRouter Age Len Sequence Metric Router 2.2.2.2 2.2.2.2 495 36 80000005 11 Router 3.3.3.3 3.3.3.3 522 36 80000005 1 Network 23.0.0.3 3.3.3.3 1043 32 80000002 0 Sum-Net 12.0.0.0 2.2.2.2 1089 28 80000001 1 Sum-Asbr 1.1.1.1 2.2.2.2 722 28 80000001 1 Area: 0.0.0.2 Type LinkState ID AdvRouter Age Len Sequence Metric Router 2.2.2.2 2.2.2.2 1045 36 80000004 1 Router 1.1.1.1 1.1.1.1 723 36 80000005 1 Network 12.0.0.2 2.2.2.2 1045 32 80000002 0 Sum-Net 23.0.0.0 2.2.2.2 495 28 80000002 11 Sum-Asbr 3.3.3.3 2.2.2.2 495 28 80000002 11 AS External Database Type LinkState ID AdvRouter Age Len Sequence Metric External 100.100.100.100 1.1.1.1 723 36 80000001 20 External 100.100.100.100 3.3.3.3 407 36 80000001 10发现 100.100.100.100 从R1发过来的路由开销是 21
发现 100.100.100.100 从R3发过来的路由开销是 21
<R2>display ospf routing OSPF Process 1 with Router ID 2.2.2.2 Routing Tables Routing for Network Destination Cost Type NextHop AdvRouter Area 12.0.0.0/24 1 Transit 12.0.0.2 2.2.2.2 0.0.0.2 23.0.0.0/24 11 Transit 23.0.0.2 2.2.2.2 0.0.0.0 Routing for ASEs Destination Cost Type Tag NextHop AdvRouter 100.100.100.100/32 21 Type1 1 12.0.0.1 1.1.1.1 100.100.100.100/32 21 Type1 1 23.0.0.3 3.3.3.3 Total Nets: 4 Intra Area: 2 Inter Area: 0 ASE: 2 NSSA: 0 发现R1和R3发过来的路由是等价路由
<R2>display ip routing-table Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 11 Routes : 12 Destination/Mask Proto Pre Cost Flags NextHop Interface 12.0.0.0/24 Direct 0 0 D 12.0.0.2 GigabitEthernet0/0/1 12.0.0.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1 12.0.0.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1 23.0.0.0/24 Direct 0 0 D 23.0.0.2 GigabitEthernet0/0/0 23.0.0.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 23.0.0.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0100.100.100.100/32 O_ASE 150 21 D 12.0.0.1 GigabitEthernet0/0/1 O_ASE 150 21 D 23.0.0.3 GigabitEthernet0/0/0 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0练习3：以下两种路由，哪条路由更优？
路由1：外部路由 LSA5，外部成本20，内部成本是100，Cost-type 2
路由2：外部路由 LSA5，外部成本20，内部成本是120，Cost-type 2
答案：路由1更优
同类型外部路由进行比较
R1配置回环口并引入sysint lo 100ip add 100.100.100.100 32ip ip-prefix admin permit 100.100.100.100 32route-policy admin permit node 10if ip-prefix adminospf 1import-route direct route-policy admin type 2 cost 20sysint lo 100ip add 100.100.100.100 32ip ip-prefix admin permit 100.100.100.100 32route-policy admin permit node 10if ip-prefix adminospf 1import-route direct route-policy admin type 2 cost 20int g0/0/0ospf cost 120int g0/0/0ospf cost 100发现出现在路由表中的路由是 R1发的
同是 type 2 类路由，先比较外部，如果外部一样，再比较内部
<R2>display ospf routing OSPF Process 1 with Router ID 2.2.2.2 Routing Tables Routing for Network Destination Cost Type NextHop AdvRouter Area 12.0.0.0/24 1 Transit 12.0.0.2 2.2.2.2 0.0.0.2 23.0.0.0/24 100 Transit 23.0.0.2 2.2.2.2 0.0.0.0 Routing for ASEs Destination Cost Type Tag NextHop AdvRouter 100.100.100.100/32 20 Type2 1 12.0.0.1 1.1.1.1 Total Nets: 3 Intra Area: 2 Inter Area: 0 ASE: 1 NSSA: 0 <R2>display ip routing-table Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 11 Routes : 11 Destination/Mask Proto Pre Cost Flags NextHop Interface 12.0.0.0/24 Direct 0 0 D 12.0.0.2 GigabitEthernet0/0/1 12.0.0.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1 12.0.0.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1 23.0.0.0/24 Direct 0 0 D 23.0.0.2 GigabitEthernet0/0/0 23.0.0.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 23.0.0.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0100.100.100.100/32 O_ASE 150 20 D 12.0.0.1 GigabitEthernet0/0/1 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0练习4：以下两种路由，哪条路由更优？
路由1：外部路由 LSA5，外部成本1，内部成本是100，Cost-type 2
路由2：外部路由 LSA5，外部成本20，内部成本是200，Cost-type 1
答案：路由2更优
两条不同类型的路由进行比较
R1配置回环口并引入sysint lo 100ip add 100.100.100.100 32ip ip-prefix admin permit 100.100.100.100 32route-policy admin permit node 10if ip-prefix adminospf 1import-route direct route-policy admin type 2 cost 1sysint lo 100ip add 100.100.100.100 32ip ip-prefix admin permit 100.100.100.100 32route-policy admin permit node 10if ip-prefix adminospf 1import-route direct route-policy admin type 1 cost 20int g0/0/0ospf cost 200int g0/0/1ospf cost 100一条 type 1 类路由 和 一条 type 2 类路由 比较，type 1 > type 2
[R2]display ospf routing OSPF Process 1 with Router ID 2.2.2.2 Routing Tables Routing for Network Destination Cost Type NextHop AdvRouter Area 12.0.0.0/24 100 Transit 12.0.0.2 2.2.2.2 0.0.0.2 23.0.0.0/24 200 Transit 23.0.0.2 2.2.2.2 0.0.0.0 Routing for ASEs Destination Cost Type Tag NextHop AdvRouter 100.100.100.100/32 220 Type1 1 23.0.0.3 3.3.3.3 Total Nets: 3 Intra Area: 2 Inter Area: 0 ASE: 1 NSSA: 0 [R2]display ip routing-table Route Flags: R - relay, D - download to fib------------------------------------------------------------------------------Routing Tables: Public Destinations : 11 Routes : 11 Destination/Mask Proto Pre Cost Flags NextHop Interface 12.0.0.0/24 Direct 0 0 D 12.0.0.2 GigabitEthernet0/0/1 12.0.0.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1 12.0.0.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/1 23.0.0.0/24 Direct 0 0 D 23.0.0.2 GigabitEthernet0/0/0 23.0.0.2/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0 23.0.0.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet0/0/0100.100.100.100/32 O_ASE 150 220 D 23.0.0.3 GigabitEthernet0/0/0 127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0 127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0OSPF路由比较规则
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