Static routing is supported only on switched virtual interfaces SVIs and not on physical interfaces. The switch does not support routing protocols. Unless otherwise noted, the term switch refers to a standalone switch and a switch stack. A switch stack operates and appears as a single switch to the routers in the network. Note Stacking is supported only on Catalyst S switches.

Catalyst 2960 and 2960-S Software Configuration Guide, 12.2(55)SE

Note When configuring routing parameters on the switch and to allocate system resources to maximize the number of unicast routes allowed, use the sdm prefer lanbase-routing global configuration command to set the Switch Database Management SDM feature to the routing template.

In some network environments, VLANs are associated with individual networks or subnetworks. Configuring VLANs helps control the size of the broadcast domain and keeps local traffic local. You configure one or more routers to route traffic to the appropriate destination VLAN.

Figure shows a basic routing topology. The router has an interface in each VLAN. Figure Routing Topology Example.

routing cisco 2960

Switch A forwards the packet directly to Host B, without sending it to the router. The router uses the routing table to finds the correct outgoing interface, and forwards the packet on the VLAN 20 interface to Switch B. Switch B receives the packet and forwards it to Host C.

When static routing is enabled on Switch A and B, the router device is no longer needed to route packets. Routers and Layer 3 switches can route packets in these ways:.

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The switch supports static routes and default routes, It does not support routing protocols. A switch stack appears to the network as a single switch, regardless of which switch in the stack is connected to a peer.

If a stack master fails, the stack detects that the stack master is down and elects a stack member to be the new stack master. Except for a momentary interruption, the hardware continues to forward packets. Note If you configure the persistent MAC address feature on the stack and the stack master changes, the stack MAC address does not change during the configured time period.I have been working on my switch and I am having trouble getting my VLAN to get to the internet via default gateway.

I will outline what I did below. Thank you so much for any help or insight. Please let me know if there is anything I need to add. Basically, here is how I set it up. However, I do this, I cannot get Vlan 10 to get to the internet. It is driving me batty and I have been working on this for a week. I would greatly appreciate any insight you might have that I am doing wrong. Does VLAN 10 have ip-helper address set? What is your NAT router?

You need to add a NAT translation for the ". Your NAT router also needs to have a route for the ". Does the router have the reciprocal routes? That's the most common error in my experience. People think their traffic can't get out when in fact, it can't get back in past the default gateway 'cos it doesn't have the routes back to the Layer 3 SVI's.

The devices on VLAN 10 must have this Thank you so much for the responses. I am unable to ping the VLAN 99 This is what is handing out the internet. Does this mean I need to setup some static routes?

No, the devices on VLAN 10 cannot ping Yes, the devices on VLAN 99 can access the internet. Are clients on vlan 10 getting a DHCP address? As Justin alludes to, you don't need two default routes. In fact having two like that is bad. If you want two there needs to be some other way to differentiate them like adding a cost. This would make one of them a floating route. For now get rid of the one that doesn't point to the default gateway.

They are your SVI's.The Catalyst and S switch command reference has command syntax and usage information. Unless otherwise noted, the term switch refers to a standalone switch and a switch stack. Note Configuring an SDM template is not required on Catalyst S switches unless you configure static routing on the switch. A Catalyst S switch running the LAN base image uses a default template that includes maximum resources for all supported features.

Catalyst S switches running the LAN base image support only a default template and the lanbase-routing template. You can use SDM templates to configure system resources in the Catalyst 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.

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To allocate ternary content addressable memory TCAM resources for different usages, the switch SDM templates prioritize system resources to optimize support for certain features. You can select SDM templates to optimize these features on the Catalyst switch:. The rows in the tables represent approximate hardware boundaries set when a template is selected. If a section of a hardware resource is full, all processing overflow is sent to the CPU, seriously impacting switch performance.

All stack members use the same SDM template that is stored on the stack master. When a new switch is added to a stack, as with the switch configuration and VLAN database files, the SDM configuration that is stored on the stack master overrides the template configured on an individual switch. This is an example of a syslog message notifying the stack master that a stack member is in SDM mismatch mode:. The default template for the Catalyst and S switches is the default desktop template.

A Catalyst S switch running the LAN base image uses the desktop default template that includes maximum resources for all supported features. However, to enable static routing, you must configure the lanbase-routing template. Note The dual template is not supported on switches running the LAN lite image and is not required on Catalyst S switches.

Specify the SDM template to be used on the switch:. Use the no sdm prefer command to set the switch to the default template. The default template balances the use of system resources. Note The Catalyst S switch supports only the default and lanbase-routing templates. After the system reboots, you can use the show sdm prefer privileged EXEC command to verify the new template configuration.

If you enter the show sdm prefer command before you enter the reload privileged EXEC command, the show sdm prefer command shows the template in use and the template that becomes active after a reload. Use the show sdm prefer privileged EXEC command with no parameters to display the active template. Use the show sdm prefer [ default dual-ipv4-and-ipv6 default lanbase-routing qos ] privileged EXEC command to display the resource numbers supported by the specified template. This is an example of output from the show sdm prefer command, displaying the template in use.

Skip to content Skip to footer. Book Contents Book Contents. Find Matches in This Book. PDF - Complete Book Updated: July 10, You can select SDM templates to optimize these features on the Catalyst switch: Default—The default template gives balance to all functions.

Using the dual stack templates results in less TCAM capacity allowed for each resource. Do not use them if you plan to forward only IPv4 traffic. When you select and configure SDM templates, you must reload the switch for the configuration to take effect.

Do not use the routing template if you do not have routing enabled on your switch.Yep, you read that correctly. You can now route on the low-end layer 2 Catalyst switches Sounds like one bad oxymoron right? This feature was introduced in IOS I figured the addition of routing Albeit limited routing functionality on a switch would have been some great news! Well it supports inter-vlan routing and up 16 static routes.

Now in regards to the configuration, once you have If you are not familiar with the SDM templates on Catalyst switches they are definitely worth a look at it, especially since the SDM template instructs the switch how to curve up resources to the TCAM. Show sdm prefer — to see the active SDM template in use.

If you change the SDM and do not perform a reload your changes will not take effect and if you issue sh sdm prefer again the switch will tell you which SDM the switch will load upon next reload.

Check it out!! A routing table on a Catalyst ! Now, there you have it routing on a Catalyst the important thing is to remember the limit of 16 static routes. I placed 22 routes into configuration mode and after 16 the switch silently discarded the rest of the routes. Something else I found pretty interesting is the fact my other VLAN interface disappeared from the routing table So this feature really is limited but it is there none the less.

In this post I was running Tagged with Subscribe to comments with RSS. Config looks good. Can you ping the next-hop, and the remote network have a back to these networks that are local to the Stephen J. Can this be done? Is there a version of that can do this? Should be anything post It seems like the X supports the basic needs for routing at the access layer, and that is awesome.

Limitations are 16 maximum static routes, but do you know if there is a limitation on number of SVIs you can configure? There is probably a limit to the number of SVI but imagine the number is very high. I would check the configuration guide they should have the information to get you in the right direction there. The directly connected interface C and the local network L each count as a route and not just one.

So for SVIs you can have up to a max of 8.Your software release may not support all the features documented in this module.

For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. An account on Cisco. A switch stack operates and appears as a single router to the rest of the routers in the network.

In some network environments, VLANs are associated with individual networks or subnetworks. Configuring VLANs helps control the size of the broadcast domain and keeps local traffic local.

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You configure one or more routers to route traffic to the appropriate destination VLAN. A switch stack appears to the network as a single switch, regardless of which switch in the stack is connected to a routing peer. If a active switch fails, the stack detects that the active switch is down and elects one of the stack members to be the new active switch.

During this period, except for a momentary interruption, the hardware continues to forward packets with no active protocols. However, even though the switch stack maintains the hardware identification after a failure, the routing protocols on the router neighbors might flap during the brief interruption before the active switch restarts.

If you configure the persistent MAC address feature on the stack and the active switch changes, the stack MAC address does not change for the configured time period. If the previous active switch rejoins the stack as a member switch during that time period, the stack MAC address remains the MAC address of the previous active switch.

Partitioning of the switch stack into two or more stacks might lead to undesirable behavior in the network. If the switch is reloaded, then all the ports on that switch go down and there is a loss of traffic for the interfaces involved in routing.

By default, IP routing is disabled on the switch. All Layer 3 interfaces on which routing will occur must have IP addresses assigned to them. By default, the switch is in Layer 2 switching mode and IP routing is disabled.Your software release may not support all the features documented in this module.

Catalyst 2960-X Switch Routing Configuration Guide, Cisco IOS Release 15.0(2)EX

For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module. Use Cisco Feature Navigator to find information about platform support and Cisco software image support.

An account on Cisco. Static routing is supported only on switched virtual interfaces SVIs and not on physical interfaces.

routing cisco 2960

The switch does not support routing protocols. Unless otherwise noted, the term switch refers to a standalone switch and a switch stack. A switch stack operates and appears as a single switch to the routers in the network. When configuring routing parameters on the switch and to allocate system resources to maximize the number of unicast routes allowed, use the sdm prefer lanbase-routing global configuration command to set the Switch Database Management SDM feature to the routing template.

For more information on the SDM templates, see chapter Configuring SDM Templates or see the sdm prefer command in the command reference for this release. In some network environments, VLANs are associated with individual networks or subnetworks. Configuring VLANs helps control the size of the broadcast domain and keeps local traffic local. You configure one or more routers to route traffic to the appropriate destination VLAN. When static routing is enabled on Switch A and B, the router device is no longer needed to route packets.

Routers and Layer 3 switch can route packets in these ways:. Using default routing to send traffic with a destination unknown to the router to a default outlet or destination. Using static routes to forward packets from predetermined ports through a single path into and out of a network. Dynamically calculating routes by using a routing protocol. The switch supports static routes and default routes, It does not support routing protocols.

Stacking is supported only on Catalyst S switch.

routing cisco 2960

A switch stack appears to the network as a single switchregardless of which switch in the stack is connected to a peer. The MAC address of the stack master is used as the router MAC address for the whole stack, and all outside devices use this address to send IP packets to the stack.

All IP packets that require software forwarding or processing go through the CPU of the stack master. Act as routing standby switchtaking over if elected as the new stack master when the stack master fails.

If a stack master fails, the stack detects that the stack master is down and elects a stack member to be the new stack master. Except for a momentary interruption, the hardware continues to forward packets.

New stack master functions after election:.

Catalyst 2960 and 2960-S Software Configuration Guide, 12.2(55)SE

Builds routing table and distributes it to stack members. If you configure the persistent MAC address feature on the stack and the stack master changes, the stack MAC address does not change during the configured time period. If the previous stack master rejoins the stack as a member switch during that time period, the stack MAC address remains the MAC address of the previous stack master.

By default, IP routing is disabled on the switch. All Layer 3 interfaces on which routing will occur must have IP addresses assigned to them. Configure Layer 3 interfaces SVIs. Enable IP routing on the switch.

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By default, the switch is in Layer 2 switching mode and IP routing is disabled. Enables privileged EXEC mode. Enter your password if prompted. Enters the global configuration mode.The Catalyst and S switch command reference has command syntax and usage information. Unless otherwise noted, the term switch refers to a standalone switch and a switch stack. Note Configuring an SDM template is not required on Catalyst S switches unless you configure static routing on the switch.

A Catalyst S switch running the LAN base image uses a default template that includes maximum resources for all supported features. Catalyst S switches running the LAN base image support only a default template and the lanbase-routing template.

You can use SDM templates to configure system resources in the Catalyst 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.

To allocate ternary content addressable memory TCAM resources for different usages, the switch SDM templates prioritize system resources to optimize support for certain features.

Cisco Catalyst 2960-X Comparison & Features

You can select SDM templates to optimize these features on the Catalyst switch:. The rows in the tables represent approximate hardware boundaries set when a template is selected. If a section of a hardware resource is full, all processing overflow is sent to the CPU, seriously impacting switch performance. All stack members use the same SDM template that is stored on the stack master.

When a new switch is added to a stack, as with the switch configuration and VLAN database files, the SDM configuration that is stored on the stack master overrides the template configured on an individual switch. This is an example of a syslog message notifying the stack master that a stack member is in SDM mismatch mode:.

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The default template for the Catalyst and S switches is the default desktop template. A Catalyst S switch running the LAN base image uses the desktop default template that includes maximum resources for all supported features.

However, to enable static routing, you must configure the lanbase-routing template. Note The dual template is not supported on switches running the LAN lite image and is not required on Catalyst S switches.

Specify the SDM template to be used on the switch:. Use the no sdm prefer command to set the switch to the default template. The default template balances the use of system resources. Note The Catalyst S switch supports only the default and lanbase-routing templates. After the system reboots, you can use the show sdm prefer privileged EXEC command to verify the new template configuration. If you enter the show sdm prefer command before you enter the reload privileged EXEC command, the show sdm prefer command shows the template in use and the template that becomes active after a reload.

Use the show sdm prefer privileged EXEC command with no parameters to display the active template. Use the show sdm prefer [ default dual-ipv4-and-ipv6 default lanbase-routing qos ] privileged EXEC command to display the resource numbers supported by the specified template.

This is an example of output from the show sdm prefer command, displaying the template in use.

routing cisco 2960

Skip to content Skip to footer. Book Contents Book Contents.

Standard Access List (ACL) for the Cisco CCNA - Part 1

Find Matches in This Book. PDF - Complete Book Updated: October 17, You can select SDM templates to optimize these features on the Catalyst switch: Default—The default template gives balance to all functions. Using the dual stack templates results in less TCAM capacity allowed for each resource.

Do not use them if you plan to forward only IPv4 traffic.