网关冗余和负载均衡GLBP

网关冗余和负载均衡GLBP 配置SW1（R6）SW2（R5） R6>enable R6#conf t R6(config)#host SW1 SW1 (config)#int range fa0/0 - 3 SW1 (config-if-range)#no shutdown SW1#vlan database SW1 (vlan)#vlan 2 VLAN 2 added: Name: VLAN0002 SW1 (vlan)#exit SW1#conf t SW1 (config)#int range fa0/0 - 3 SW1 (config-if-range)#switchport access vlan 2 SW1 (config-if-range)#exit SW1 (config)#exit SW1# R5>enable R5#conf t R5(config)#host SW2 SW2(config)#int range fa0/0 - 3 SW2(config-if-range)#no shutdown SW2(config-if-range)#exit SW2(config)#exit SW2#vlan database SW2(vlan)#vlan 2 VLAN 2 added: Name: VLAN0002 SW2(vlan)#exit SW2#conf t SW2(config)#int range fa0/0 -3 SW2(config-if-range)#switchport access vlan 2 SW2(config-if-range)#exit SW2(config)#exit SW2# 配置PC1（R7） R7>enable R7#conf t R7(config)#host PC1 PC1 (config)#no ip routing PC1 (config)#int e0/0 PC1 (config-if)#ip add 192.168.1.100 255.255.255.0 PC1 (config-if)#no shutdown PC1 (config-if)#exit PC1 (config)#ip default-gateway 192.168.1.1 PC1 (config)#ip default-gateway 192.168.1.2 PC1 (config)#ip default-gateway 192.168.1.3 PC1 (config)#exit PC1# 网关直接指向192.168.1.254 三、配置路由器 R1>enable R1#conf t R1(config)#int e0/0 R1(config-if)#ip add 192.168.1.1 255.255.255.0 R1(config-if)#no shutdown R1(config-if)#exit R1(config)#int e0/1 R1(config-if)#ip add 192.168.2.1 255.255.255.0 R1(config-if)#no shutdown R1(config-if)#exit R1(config)#exit R1# R2>enable R2#conf t R2(config)#int e0/0 R2(config-if)#ip add 192.168.1.2 255.255.255.0 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#int e0/1 R2(config-if)#ip add 192.168.2.2 255.255.255.0 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#exit R2# R3>enable R3#conf t R3(config)#int e0/0 R3(config-if)#ip add 192.168.1.3 255.255.255.0 R3(config-if)#no shutdown R3(config-if)#exit R3(config)#int e0/1 R3(config-if)#ip add 192.168.2.3 255.255.255.0 R3(config-if)#no shutdown R3(config-if)#exit R3(config)#exit R3# R4>enable R4#conf t R4(config)#int lo 0 R4(config-if)#ip add 4.4.4.4 255.255.255.0 R4(config-if)#exit R4(config)#int e0/0 R4(config-if)#ip add 192.168.2.4 255.255.255.0 R4(config-if)#no shutdown R4(config-if)#exit R4(config)#exit R4# 配置RIP路由 R1#conf t R1(config)#router rip R1(config-router)#net 192.168.1.0 R1(config-router)#net 192.168.2.0 R1(config-router)#passive-interface e0/0 R1(config-router)#exit R1(config)#exit R1# R2#conf t R2(config)#router rip R2(config-router)#net 192.168.1.0 R2(config-router)#net 192.168.2.0 R2(config-router)#passive-interface e0/0 R2(config-router)#exit R2(config)#exit R2# R3#conf t R3(config)#router rip R3(config-router)#net 192.168.1.0 R3(config-router)#net 192.168.2.0 R3(config-router)#passive-interface e0/0 R3(config-router)#exit R3(config)#exit R3# R4#conf t R4(config)#router rip R4(config-router)#net 192.168.2.0 R4(config-router)#net 4.4.4.0 R4(config-router)#passive-interface e0/0 R4(config-router)#exit R4(config)#exit R4# 查看路由 R1#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is not set R 4.0.0.0/8 [120/1] via 192.168.2.4, 00:00:53, Ethernet0/1 C 192.168.1.0/24 is directly connected, Ethernet0/0 C 192.168.2.0/24 is directly connected, Ethernet0/1 R1# R2#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is not set R 4.0.0.0/8 [120/1] via 192.168.2.4, 00:01:04, Ethernet0/1 C 192.168.1.0/24 is directly connected, Ethernet0/0 C 192.168.2.0/24 is directly connected, Ethernet0/1 R2# R3#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is not set R 4.0.0.0/8 [120/1] via 192.168.2.4, 00:01:16, Ethernet0/1 C 192.168.1.0/24 is directly connected, Ethernet0/0 C 192.168.2.0/24 is directly connected, Ethernet0/1 R3# R4#sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route Gateway of last resort is not set 4.0.0.0/24 is subnetted, 1 subnets C 4.4.4.0 is directly connected, Loopback0 R 192.168.1.0/24 [120/1] via 192.168.2.3, 00:00:01, Ethernet0/0 [120/1] via 192.168.2.2, 00:00:23, Ethernet0/0 [120/1] via 192.168.2.1, 00:00:23, Ethernet0/0 C 192.168.2.0/24 is directly connected, Ethernet0/0 R4# 测试 PC1#ping 4.4.4.4 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 92/108/136 ms PC1# R4#ping 192.168.1.100 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.1.100, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 64/87/144 ms R4# 配置GLBP R1#conf t R1(config)#int e0/0 R1(config-if)#glbp 1 ip 192.168.1.254 R1(config-if)#glbp 1 priority 200 R1(config-if)#glbp 1 preempt R1(config-if)#glbp 1 authentication md5 key-string cisco R1(config-if)#exit R1(config)#exit R1# R2#conf t R2(config)#int e0/0 R2(config-if)#glbp 1 ip 192.168.1.254 R2(config-if)#glbp 1 priority 180 R2(config-if)#glbp 1 preempt R2(config-if)#glbp 1 authentication md5 key-string cisco R2(config)#exit R2# R3#conf t R3(config)#int e0/0 R3(config-if)#glbp 1 ip 192.168.1.254 R3(config-if)#glbp 1 priority R3(config-if)#glbp 1 priority 160 R3(config-if)#glbp 1 preempt R3(config-if)#glbp 1 authentication md5 key-string cisco R3(config-if)#exit R3(config)#exit R3# 八、查看GLBP R1#sh glbp Ethernet0/0 - Group 1 State is Active 2 state changes, last state change 00:06:16 Virtual IP address is 192.168.1.254 Hello time 3 sec, hold time 10 sec Next hello sent in 1.648 secs Redirect time 600 sec, forwarder time-out 14400 sec Authentication MD5, key-string "cisco" Preemption enabled, min delay 0 sec Active is local Standby is 192.168.1.2, priority 180 (expires in 9.548 sec) Priority 200 (configured) Weighting 100 (default 100), thresholds: lower 1, upper 100 Load balancing: round-robin Group members: cc00.0270.0000 (192.168.1.1) local cc01.0270.0000 (192.168.1.2) authenticated cc02.0270.0000 (192.168.1.3) authenticated There are 3 forwarders (1 active) Forwarder 1 State is Active 1 state change, last state change 00:06:06 MAC address is 0007.b400.0101 (default) Owner ID is cc00.0270.0000 Redirection enabled --More-- *Mar 1 00:40:12.979: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Ethernet0/1 (not full duplex), with SW2 FastEthernet0/1 (full duplex). *Mar 1 00:40:13.035: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Ethernet0/0 (not full duplex), with SW1 FastEthernet0/1 (full duplex). Preemption enabled, min delay 30 sec Active is local, weighting 100 Forwarder 2 State is Listen MAC address is 0007.b400.0102 (learnt) Owner ID is cc01.0270.0000 Redirection enabled, 598.468 sec remaining (maximum 600 sec) Time to live: 14397.876 sec (maximum 14400 sec) Preemption enabled, min delay 30 sec Active is 192.168.1.2 (primary), weighting 100 (expires in 7.064 sec) Forwarder 3 State is Listen MAC address is 0007.b400.0103 (learnt) Owner ID is cc02.0270.0000 Redirection enabled, 599.580 sec remaining (maximum 600 sec) Time to live: 14399.376 sec (maximum 14400 sec) Preemption enabled, min delay 30 sec Active is 192.168.1.3 (primary), weighting 100 (expires in 8.920 sec) R1# 实验错误，RIPv1不支持认证，改为RIPv2或者EIGRP协议