Cisco三层交换机与RouterosOSPF+DHCP配置实例
使用设备如下
三层交换机：Cisco 3550 EMI
接入层交换机：HUAWEI Quidway S2008
Mikrotik RouterOs 3.13
网络拓扑如下：
配置目的：验证Routeros OSPF动态路由及DHCP中继
CISCO 3550
ip routing
#开启路由功能#
ip dhcp excluded-address 10.100.0.100
#设置dhcp服务器ip地址#
interface FastEthernet0/2
switchport trunk encapsulation dot1q
switchport mode trunk
#设置与2层交换机互联的trunk端口#
interface FastEthernet0/23
switchport access vlan 2
switchport mode access
spanning-tree portfast
#设置与ros连接的端口的vlan#
interface Vlan2
description server
ip address 10.100.0.1 255.255.255.0
#设置3层交换机vlan接口ip#
!
interface Vlan3
description office
ip address 10.100.3.1 255.255.255.0
ip helper-address 10.100.0.100
!
#设置3层交换机vlan接口ip及配置dhcp中继#
interface Vlan4
description sales
ip address 10.100.4.1 255.255.255.0
ip helper-address 10.100.0.100
!
#设置3层交换机vlan接口ip及配置dhcp中继#
interface Vlan5
description users
ip address 10.100.5.1 255.255.255.0
ip helper-address 10.100.0.100
! #设置3层交换机vlan接口ip及配置dhcp中继#
router ospf 10
router-id 10.100.0.1
log-adjacency-changes
network 10.100.0.0 0.0.255.255 area 10.100.0.0
#配置ospf进程及area信息#
HUAWEI Quidway S2008 配置：
interface Ethernet0/6
switchport access vlan 5
!
#配置用户端口#
interface Ethernet0/7
switchport access vlan 3
!
#配置用户端口#
interface Ethernet0/8
switchport access vlan 4
#配置用户端口#
interface Ethernet0/9
switchport mode trunk
switchport trunk allowed vlan all
!
#设置与3层交换机互联的trunk端口#
Mikrotik Routeros:
/ip pool
add name="vlan3" ranges=10.100.3.2-10.100.3.254
add name="vlan4" ranges=10.100.4.2-10.100.4.254
add name="vlan5" ranges=10.100.5.2-10.100.5.254
#设置不同Vlan的地址池#
/ip dhcp-server
add address-pool=vlan3 authoritative=after-2sec-delay bootp-support=static \
disabled=no interface=in lease-time=3d name="vlan3" relay=10.100.3.1
add address-pool=vlan4 authoritative=after-2sec-delay bootp-support=static \
disabled=no interface=in lease-time=3d name="vlan4" relay=10.100.4.1
add address-pool=vlan5 authoritative=after-2sec-delay bootp-support=static \
disabled=no interface=in lease-time=3d name="vlan5" relay=10.100.5.1
#设置Dhcp-server 使之支持Dhcp中继#
/routing ospf area
add area-id=0.0.0.0 authentication=none disabled=no name="backbone" \
type=default
add area-id=10.100.0.0 authentication=none disabled=no name="area1" \
type=default
#配置ospf area#
/ip address
add address=10.100.0.100/24 broadcast=10.100.0.255 comment="" disabled=no \
interface=in network=10.100.0.0
#配置内部IP地址#
/ip dns
set allow-remote-requests=yes cache-max-ttl=1w cache-size=2048KiB \
max-udp-packet-size=512 primary-dns=192.168.100.208 \
#配置dns#
/ip firewall nat
add action=masquerade chain=srcnat comment="" disabled=no \
src-address=10.100.0.0/16
#配置NAT#
/routing ospf
set distribute-default=always-as-type-2 metric-bgp=20 metric-connected=20 \
metric-default=1 metric-rip=20 metric-static=20 mpls-te-area=unspecified \
mpls-te-router-id=unspecified redistribute-bgp=no \
redistribute-connected=no redistribute-rip=no redistribute-static=no \
router-id=10.100.100.2
/routing ospf interface
add authentication=none authentication-key="" cost=10 dead-interval=40s \
disabled=no hello-interval=10s interface=in network-type=broadcast \
passive=no priority=1 retransmit-interval=5s transmit-delay=1s
/routing ospf network
add area=area1 disabled=no network=10.100.0.0/16
#配置OSPF路由协议#
cisco3550#show 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, E - EGP
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 10.100.0.100 to network 0.0.0.0
10.0.0.0/24 is subnetted, 4 subnets
C 10.100.4.0 is directly connected, Vlan4
C 10.100.5.0 is directly connected, Vlan5
C 10.100.3.0 is directly connected, Vlan3
C 10.100.0.0 is directly connected, Vlan2
O*E2 0.0.0.0/0 [110/1] via 10.100.0.100, 01:09:52, Vlan2<
admin@MikroTik] /ip route> print
Flags: X - disabled, A - active, D - dynamic, C - connect, S - static, r - rip, b - bgp, o - ospf, m - mme, B - blackhole, U - unreachable, P - prohibit
# DST-ADDRESS PREF-SRC GATEWAY-STATE GATEWAY DISTANCE INTERFACE
0 ADS 0.0.0.0/0 reachable 192.168.18.1 0 out
1 ADC 10.100.0.0/24 10.100.0.100 0 in
2 ADo 10.100.3.0/24 reachable 10.100.0.1 110 in
3 ADo 10.100.4.0/24 reachable 10.100.0.1 110 in
4 ADo 10.100.5.0/24 reachable 10.100.0.1 110 in
5 ADC 192.168.18.0/24 192.168.18.158 0 out