Cisco 3750-24g makes Policy Routing

Learning Strategy Routing:

Today to help friends of the company debugging a basic needs: the company's original 10M fiber network to provide staff access to the Internet, because the network behavior management is not very strict, speed when the speed is slow. Financial personnel every month need to report all kinds of reports on the Internet, seriously affecting the efficiency, hereby applied for an ADSL to financial room dedicated use.

The original network structure is as follows: routing-core exchange-access switching changed to: Routing (fiber) routing (AD)--core switching--access switching

Talk about the requirements, look at the configuration file, only need to add a policy route to the Finance department

The configuration process is as follows:

1. Configure SDM prefer routing

c_c_3750 (config) #sdm?

Prefer Config TCAM and Forwarding RAM sizes. warning:need to the reset switch for configuration to take effect. (Warning: This command takes effect requires a reboot)

c_c_3750 (config) #sdm prefer routing #为交换机提供最大化的路由分配

c_c_3750 (config) #exit

C_c_3750#reload

2. Configuring ACLS

IP Access-list Extended Manager

Permit IP 192.168.4.0 0.0.0.255 any #允许财务全网段访问, you can also define a separate IP or IP segment.

Deny IP any any

3. Configure Route-map

c_c_3750 (config) #route-map man permit #定义策略路由 man for policy name

c_c_3750 (config-route-map) #match IP address manager #指定允许的ACL名称或ACL序号

c_c_3750 (config-route-map) #set IP?

Address Specify IP Address

Default Set default Information

DF Set DF Bit

Next-hop Next Hop Address

Precedence Set Precedence Field

Qos-group Set QOS Group ID

TOS Set type of service field

c_c_3750 (config-route-map) #set IP next-hop 192.168.10.2 #指定下跳网络接口IP

4. Policy Routing applied to the appropriate port or VLAN

C_c_3750#conf T

Enter configuration commands, one per line. End with cntl/z.

c_c_3750 (config) #interface VLAN 40

c_c_3750 (config-if) #ip policy Route-map Man

5. Verifying Policy Routing

Show me first.

C_c_3750#show Route-map

Route-map man, permit, sequence 10

Match clauses:

IP address (access-lists): Manager

Set clauses:

IP next-hop 192.168.10.2

Policy routing matches:0 packets, 0 bytes

Then go to the customer tracert www.baidu.com to see the routing trend.

C:\users\administrator\desktop>tracert www.baidu.com

Up to 30 hops tracking

Routes to www.a.shifen.com [61.135.169.121]:

1 1 ms 1 ms 1 ms XXXXX [192.168.4.1]

2 xxxxx [192.168.10.2] Report: Unable to access the target network.

The trace is complete. #因为未配置ADSL, so the access is not successful, but you can verify that the route has taken the 10.2 address specified by the policy route

Check out show Route-map once again

C_c_3750#show Route-map

Route-map man, permit, sequence 10

Match clauses:

IP address (access-lists): Manager

Set clauses:

IP next-hop 192.168.10.2

Policy routing matches:184 packets, 18531 bytes #已经有流量提示.

The above is the basic 3750G Policy Routing configuration.

Precautions:

1. In the configuration SDM command is sure to re-device.

2. The IP routeing command must be turned on.

3. Turn off the swap port mode.

This article is from the "Fly high into the Sky" blog, please be sure to keep this source http://xjlsky.blog.51cto.com/22754/1651167

Cisco 3750-24g makes Policy Routing