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ISM configuration

Hi all!

I have an ISM module and try to use it in our border ASR9000.

vrf insidevrf1

address-family ipv4 unicast

!

!

vrf outsidevrf1

address-family ipv4 unicast

!

hw-module service cgn location 0/7/CPU0

interface GigabitEthernet0/0/0/0

vrf insidevrf1

ipv4 address 10.10.1.1/30

interface ServiceApp1

vrf insidevrf1

ipv4 address 10.111.10.1 255.255.255.0

service cgn CGN1 service-type nat44

!

interface ServiceApp2

vrf outsidevrf1

ipv4 address 10.111.20.1 255.255.255.0

service cgn CGN1 service-type nat44

!

interface ServiceInfra1

ipv4 address 10.1.1.1 255.255.255.252

service-location 0/7/CPU0

router static

address-family ipv4 unicast

x.x.x.x/29 vrf outsidevrf1 ServiceApp2

!

vrf insidevrf1

  address-family ipv4 unicast

   0.0.0.0/0 ServiceApp1

  10.253.0.0/16 10.10.1.2

  !

!

vrf outsidevrf1

  address-family ipv4 unicast

  x.x.x.x/29 ServiceApp2

service cgn CGN1

service-location preferred-active 0/7/CPU0

service-type nat44 NAT1

  alg ActiveFTP

  inside-vrf insidevrf1

   map outside-vrf outsidevrf1 address-pool x.x.x.x/29

  !

!

!

end

In this router BGP is configured too. All BGP routes and interfaces are in vrf default.

And the question. How can I route 0.0.0.0/0 from vrf outsidevrf1 to vrf default?

I can't put any interface in outsidevrf1 because on all interfaces is traffic without NAT too.

If I will create a BVI in vrf default with IP address and will make a static route in it like this:

router static

vrf outsidevrf1

  address-family ipv4 unicast

0.0.0.0/0 vrf default BVI1122

Will this work?

1 ACCEPTED SOLUTION

Accepted Solutions
New Member

ISM configuration

It is not mandatory to create outside vrf , you can directly map outsideserviceapp interface in your CGN configuration which will than do the Global Table lookup for default route.

for exmaple;

service cgn myCGNService

service-location preferred-active 0/2/CPU0

service-type nat44 nat44

  inside-vrf lan-nat-users

   map outsideServiceApp ServiceApp2 address-pool 225.1.1.1/24

2 REPLIES
New Member

ISM configuration

It is not mandatory to create outside vrf , you can directly map outsideserviceapp interface in your CGN configuration which will than do the Global Table lookup for default route.

for exmaple;

service cgn myCGNService

service-location preferred-active 0/2/CPU0

service-type nat44 nat44

  inside-vrf lan-nat-users

   map outsideServiceApp ServiceApp2 address-pool 225.1.1.1/24

ISM configuration

Thank you!

It's a really great solution!

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