Routing Notes 09 PATH CONTROL

POLICY BASE ROUTING

Configuring Policy Routing

conf t
ip access-list standard TAMAD
permit host 192.168.1.20
ip access-list extended PAGILAS
permit tcp host 192.168.1.21 any eq 23
permit tcp host 192.168.1.21 any 443
configuring access-list

route-map CORP_POLICY permit 10
match ip address TAMAD
set ip next-hop 201.1.1.2

show route-map

route-map CORP_POLICY permit 20
match ip address PAGILAS
set ip next-hop 200.1.1.2

show route-map

route-map CORP_POLICY permit 30
set ip next-hop 201.1.1.2
after policy 10 and 20 traffic will go to policy 30

int fa0/0
ip policy route-map CORP_POLICY
incoming traffic on this interface

IP-SLA

Measuring service levels on a particular circuit
Send probes (Ping, FTP, HTTP, DNS Lookup etc) to specific IP Address

Creating SLA Monitor Probe

conf t
ip sla monitor 1
type echo protocpl ipIcmpecho 200.1.1.2
timeout 500
how long to consider a ping lost
frequency 1
threshold 800
how long to consider it down
ip sla monitor schedule 1 start time now life forver

Modify your routing must create a track object consider a probe UP or DOWN

Creating a Track Object

conf t
track 1 rtr 1
rtr = response time reporter

Adding a track object on the route

ip route 0.0.0.0 0.0.0.0 200.1.1.2 track 1
ip route 0.0.0.0 0.0.0.0 200.1.1.2 50