, 6.1.
OSPF Router1.
( , .. ):
:
Switch> en
:
Switch1# conf t
OSPF:
Router1(config)# router ospf 1
router ospf <_>
. 1 65535. OSPF
.
:
Router1(config-router)# network 10.11.0.0
:
Router1(config-router)# network 10.10.0.0
OSPF:
Router1(config-router)# version 2
OSPF:
Router1(config-router)# exit
:
Router1(config)# exit
:
Switch1# write memory
OSPF Router2.
.
1. - ?
2. RIP.
3. OSPF.
4. .
5. .
6. - ?
- RIP;
- IGRP;
- EIGRP;
- OSPF
7. .
8. .
9. .
10. .
11. RIP-2.
7. NAT.
NAT (Network Address Translation) , , () IP .
NAT () , - .
IP . RFC 1918 :
10.0.0.0 10.255.255.255 (10.0.0.0/255.0.0.0 (/8))
172.16.0.0 172.31.255.255 (172.16.0.0/255.240.0.0 (/12))
192.168.0.0 192.168.255.255 (192.168.0.0/255.255.0.0 (/16))
|
|
|
, IP .
( ) NAT.
(), NAT . , , , . IP , .
NAT Cisco IOS
1. (Inside) (Outside)
, . , .
2. ( ip ) .
3.
4.
Static NAT, Dynamic NAT, Overloading.
Static NAT NAT, IP , .
Dynamic NAT NAT, / . , nat-
Overloading . , NAT PAT (Port Address Translation). PAT , .
NAT:
:
interface FastEthernet0/0
ip nat outside
:
interface Vlan1
ip nat inside
IP, NAT:
ip access-list extended NAT
permit ip host 192.168.???.??? any
NAT :
ip nat inside source list NAT interface FastEthernet0/0 overload
"show ip nat translations".
"debug ip nat"
Static NAT
router(config)#ip nat inside source static <local-ip> <global-ip>
router(config)#interface fa0/4
router(config-if)#ip nat inside
router(config)#interface fa0/4
router(config-if)#exit
router(config)#interface s0
router(config-if)#ip nat outside
Dynamic NAT
router(config)#ip nat pool name start-ip end-ip {netmask netmask | prefix-length prefix-length}
router(config)#access-list <acl-number> permit <source-IP> [source-wildcard]
router(config)#ip nat inside source list <acl-number> pool <name>
router(config)#interface fa0/4
router(config-if)#ip nat inside
router(config-if)#exit
router(config)#interface s0
router(config-if)#ip nat outside
Overloading
|
|
|
router(config)#access-list acl-number permit source-IP source-wildcard
router(config)#ip nat inside source list acl-number interface interface overload
router(config)#interface fa0/4
router(config-if)#ip nat inside
router(config-if)#exit
router(config)#interface s0
router(config-if)#ip nat outside
