E1 Link Going to HO
Internet Cloud
Intranet / Internet Connectivity
10.3.255.254
Only Internet Connectivity
Cisco 1841
Ethernet
192.168.1.2
10.3.12.1
192.168.1.1
MTNL DSL Router
For Internet
Ethernet
Switch
Case Study
1.
2.
3.
Primary Path to Internet is MTNL DSL Connection.
Primary path to Intranet is to E1 Link to HO.
Secondary path for internet is E1 link to H0.
Query.
1.
We have configured the router and as the DSL Link fails internet gets switch over to E1 Link HO, but when DSL Link comes up the
Primary path is not getting restore.
2.
We have configured TRACK and need to get alerts when Track get down on NSM or SYS log server or any other.
track 10 rtr 10 reachability
!
interface FastEthernet0/0
ip address 10.3.12.1 255.255.255.0
ip nat inside
ip virtual-reassembly
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 192.168.1.2 255.255.255.0
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
!
interface Serial0/0/0:1
ip address 10.3.255.254 255.255.255.252
encapsulation ppp
!
router ospf 100
log-adjacency-changes
redistribute static subnets
network 10.3.12.0 0.0.0.255 area 0
network 10.3.255.252 0.0.0.3 area 0
network 192.168.1.0 0.0.0.255 area 0
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 192.168.1.1 track 10
ip route 0.0.0.0 0.0.0.0 10.3.255.253 100
ip route 10.0.0.0 255.0.0.0 10.3.255.253
ip http server
no ip http secure-server
ip nat inside source list 1 interface FastEthernet0/1 overload
!
ip sla 10
icmp-echo 203.153.44.65 source-ip 192.168.1.2
frequency 5
ip sla schedule 10 life forever start-time now
access-list 1 permit 10.3.12.0 0.0.0.255