NATING SOLUTION REQUIRED

[brijeshch1]

HI,

I am facing problem in my setup which includes cisco 3560 and cisco 2811 router.Actully I am ruuning BGP in 3560 l-3 switch.
Some of the customers are connect to 3560 switch via 2811 router,all of those customer having same rate-limit.
Some of the customers are directly terminated in 3560 switch where i configure vlans,all vlans has different rate-limits
PROBLEM:I need to do nating to surf some of the ips only for one customer on the 3560 switch.so i m using route-map using acl on switch and doing natting on router.Using route-map i m redirecting traffic to my routers loop bakc interface, where i m doing natting and send it back to the switch,but that is not helpful.

kindly suggest the solution.

Thanks in advance.

Regards,

Brijesh

[sansarav720e · Accepted solution]

Hi Brijesh ,

              Could you please clearly state your requirement . You have defined your customer on L3 switch and try to perform nating on 2811 router .

1) let me know on follwoing thing whether all vlan on your L3 swith is holding vlan of private subnets , so you want to do nating only for one Subnet .

2) else your vlan on L3 switch has got public ip address assigned for customer .

      kindly let me your requirement .

If you have private ip address for your vlan on L3 switch ,its easy to perform PATing on your 2811 router , based on source Vlan IP subnet .

if you have public ip address on your L3 Switch thn also we can perform PATing based on source Public ip .

[brijeshch1]

Hi,

Kindly find the existing setup as mentioned blow.

• Cisco L3 3560 Switch is connected to ISP and the switch is connected to 1841 Router and router is connected with 2950 switch.
• In cisco l3 there are multiple vlans with public ip
• In 1841 there are multiple sub interfaces with encaplusation which cater routing & Vlans to 2950 switch.
• Vlan X in ciscl l3 switch if any packet towards Public (with source any and destination 41.1.1.1 ) pool eg: 41.1.1.1 comes should to redirected to a loop back interface created in Router 1841.
• Loopback interface will be ip nat inside and the exit interface of router 1841 will be ip nat outside
• Like this i want to change the source ip address of Vlan x like this.

Thx and Regards

Brijesh