RE: policy routing

From: Desyatnik, Yan (Yan.Desyatnik@xxxxxxx)
Date: Wed Jan 17 2001 - 19:11:23 GMT-3


   

Steve,
        I take back my statement about source only, however I do not
understand what you trying to test. If I can take a look at you router full
config it will be helpful, anyway, when you do a regular ping your source ip
address will be ip address of the interface packet goes out. Based on your
config - when you ping, packet will not be policy routed (it was not
originated on any interface) but follow routing table (default). Policy
routing happens before routing table lookup and has to be configured on an
interface. local policy just allows to include locally originated packets.
Create a loopback on your router, configure your policy on loopback and then
do extended ping sourcing loopback - this should work, I tested it in my
lab.
Yan

                -----Original Message-----
                From: Steve Clubb [mailto:sclubb@cattech.com]
                Sent: Wednesday, January 17, 2001 4:48 PM
                To: 'Roger Dellaca'; Steve Clubb; Desyatnik, Yan
                Cc: ccielab@groupstudy.com
                Subject: RE: policy routing

                It works with a static route 137.20.0.0 255.255.0.0
137.20.29.2.

                -----Original Message-----
                From: Roger Dellaca [mailto:rdellaca@bpopca.com]
                Sent: Wednesday, January 17, 2001 1:43 PM
                To: sclubb@cattech.com; Yan.Desyatnik@usi.net
                Cc: ccielab@groupstudy.com
                Subject: RE: policy routing

                does the ping work if you remove all the policy routing &
set a static route
                instead? If not, it's not the policy routing.

>>> Steve Clubb <sclubb@cattech.com> 01/17 12:46 PM >>>
                Right -

                What I've done is:

                ip local policy route-map policy
                ip route 0.0.0.0 0.0.0.0 64.166.75.129
                !
                access-list 101 permit ip any 137.20.0.0 0.0.255.255
                !
                !
                !
                route-map policy permit 10
                 match ip address 101
                 set ip next-hop 137.20.29.2
                !
                route-map policy permit 20

                However, this is what I get:

                ........
                Success rate is 0 percent (0/5)
                terminal#

                With debug ip packet on.

                Steve

                -----Original Message-----
                From: Roger Dellaca [mailto:rdellaca@bpopca.com]
                Sent: Wednesday, January 17, 2001 12:26 PM
                To: sclubb@cattech.com; Yan.Desyatnik@usi.net
                Cc: ccielab@groupstudy.com
                Subject: RE: policy routing

                not quite true - you can policy route on an extended
access-list, which can
                use destination as well as source address, plus source/dest
port, protocol,
                whatever you can do in the access-list.

                So you can do:
                access-list 101 permit ip any 137.20.0.0 0.0.255.255

                route-map pol permit 10
                match ip add 101
                set ip next-hop 137.20.29.2

                ip local policy route-map pol

                Although, as already mentioned below, in real life you
wouldn't do only on
                destination since that's why we have static routes & routing
protocols.

>>> Steve Clubb <sclubb@cattech.com> 01/17 11:45 AM >>>
                Aw - I see.

                Thanks,

                Steve

                -----Original Message-----
                From: Desyatnik, Yan [mailto:Yan.Desyatnik@usi.net]
                Sent: Wednesday, January 17, 2001 11:38 AM
                To: 'Steve Clubb'
                Cc: 'ccielab@groupstudy.com'
                Subject: RE: policy routing

                Steve,
                        You cannot policy route based on destination only
based on source.
                To manipulate traffic based on destination use static,
metrics, tunnels.

                Yan.

                                -----Original Message-----
                                From: Steve Clubb
[mailto:sclubb@cattech.com]
                                Sent: Wednesday, January 17, 2001 2:04 PM
                                To: 'ccielab@groupstudy.com'
                                Subject: policy routing

                                Hey people -
                                
                                I have a situation where I want to forward
traffic going to
                a certain subnet
                                out an interface or to a next-hop IP. All
other traffic to
                take the default
                                route configured on the router. I can't use
a static route.
                I tried this
                                but it's not working. Any ideas?
                                
                                ip local policy route-map policy
                                ip classless
                                ip route 0.0.0.0 0.0.0.0 64.168.75.12
                                !
                                access-list 1 permit 137.20.0.0 0.0.255.255
                                access-list 2 permit any
                                !
                                !
                                !
                                route-map policy permit 10
                                 match ip address 1
                                 set ip default next-hop 137.20.29.2
                                !
                                route-map policy permit 20
                                 match ip address 2
                                
                                Thanks,
                                
                                Steve
                                
                                

                                

                                

                                
                                

        



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