What is Cisco SDM template?

What is Cisco SDM template?

SDM templates are used to configure system resources in the switch to optimize support for specific features, depending on how the switch is used in the network. You can select a template to provide maximum system usage for some functions or use the default template to balance resources.

How do I configure Cisco policy based routing?

PBR on Cisco router can configure using following steps:

1. Step1: Configure ACLs. Permit statement in ACL is what will be matched.
2. Step2: Configure route map instances.
3. Step3: Configure match commands.
4. Step4: Configure set commands.
5. Step5: Configure PBR on the interface.
6. Step6: (Optional) Configure local PBR.

What is policy based routing Cisco?

Policy-based routing is a process whereby the device puts packets through a route map before routing them. To enable policy-based routing on an interface, indicate which route map the device should use by using the ip policy route-map map-tag command in interface configuration mode.

What is a SDM template?

SDM templates are used to configure system resources in the switch to optimize support for specific features, depending on how the switch is used in the network. The templates prioritize system resources to optimize support for three types of features: It would typically be selected for a Layer 2 switch.

What is PBR configuration?

PBRPolicy-based routing is a technique used to make routing decisions based on policies set by the network administrator. is configured on the router. No other special configuration is required on the appliance. This is also known as FBF (Filter-Based Forwarding).

How do you implement policy based routing?

To enable PBR, you must create a route map that specifies the match criteria and the resulting action if all of the match clauses are met. Then you must enable PBR for that route map on a particular interface. All packets arriving on the specified interface matching the match clauses will be subject to PBR.

What is PBR networking?

Policy-based routing (PBR) is a technique that forwards and routes data packets based on policies or filters. The goal of PBR is to make the network as agile as possible. By defining routing behavior based on application attributes, PBR provides flexible, granular traffic-handling capabilities for forwarding packets.

What does SDM prefer do?

You can use SDM templates to configure system resources in the switch to optimize support for specific features, depending on how the switch is used in the network. Routing—The routing template maximizes system resources for unicast routing, typically required for a router or aggregator in the center of a network.

What is PBR in QoS?

Policy-Based Routing (PBR) provides a method to forward packets by overriding the information available in the IP routing table. PBR can be used to implement QoS by classifying and marking packets with IP precedence values in the Type of Service (ToS) field of the IP header.

How to support policy based routing ( PBR )?

In order for the TCAM to support Policy Based Routing (PBR), it should be formatted by changing the Switch Database Management (SDM) template. You must modify the SDM template, such that it supports the 144-bit Layer 3 TCAM.

How does policy based routing work in catalyst 3550?

Catalyst 3550 series switches have hardware based forwarding, thus forwarding information is programmed in Ternary Content Addressable Memory (TCAM). In order for the TCAM to support Policy Based Routing (PBR), it should be formatted by changing the Switch Database Management (SDM) template.

Do you need an IP Base image for PBR?

We need to make sure that we are not running an IP Base image. Policy-based routing (PBR) allows superior control by facilitating flow redirection regardless of the routing protocol configured. The IP Services image is required for the same to be supported.

Which is the default SDM template for Cisco switches?

By default these switches use the Default SDM Template which is the default desktop template. This default does not allocate any resources for the PBR and hence we notice the issue of being unable see the command entered under the interface even though it should ideally support it.