Use the Routing IP Configuration page to configure global routing settings on the device. Routing provides a means of transmitting IP packets between subnets on the network. Routing configuration is necessary only if the device is used as a Layer 3 device that routes packets between subnets. If the device is used as a Layer 2 device that handles switching only, it typically connects to an external Layer 3 device that handles the routing functions; therefore, routing configuration is not required on the Layer 2 device.
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Configuration Fields
| Field | Description |
|---|---|
| Routing Mode | The administrative mode of routing on the device. The
options are as follows: Enable – The device can act as a Layer 3 device by routing packets between interfaces configured for IP routing. Disable – The device acts as a Layer 2 bridge and switches traffic between interfaces. The device does not perform any internetwork routing. |
| ICMP Echo Replies | Select Enable or Disable from the drop-down menu. If you select Enable, then only the router can send ECHO replies. By default, ICMP (Internet Control Message Protocol) Echo Replies are sent for echo requests. |
| ICMP Redirects | Select this option to allow the device to send ICMP Redirect messages to hosts. An ICMP Redirect message notifies a host when a better route to a particular destination is available on the network segment. |
| ICMP Rate Limit Interval | To control the ICMP error packets, you can specify the number of ICMP error packets that are allowed per burst interval. By default, the rate limit is 100 packets per second; that is, the burst interval is 1000 milliseconds. To disable ICMP rate limiting, set this field to 0. The valid range is 0 to 2147483647 milliseconds. |
| ICMP Rate Limit Burst Size | To control the ICMP error packets, you can specify the number of ICMP error packets that are allowed per burst interval. By default, the burst size is 100 packets. When the burst interval is zero, then configuring this field is not a valid option. The valid burst size range is 1 to 200. |
| Static Route Preference | The default distance (preference) for static routes. Lower route-distance values are preferred when determining the best route. The value configured for Static Route Preference is used when using the CLI to configure a static route and no preference is specified. Changing the Static Route Preference does not update the preference of existing static routes. |
| Local Route Preference | The default distance (preference) for local routes. |
| Maximum Next Hops | The maximum number of hops supported by the switch. This is a read-only value. |
| Maximum Routes | The maximum number of routes (routing table size) supported by the switch. |
| Global Default Gateway | The IP address of the default gateway for the device. If
the destination IP address in a packet does not match any routes in the routing
table, the packet is sent to the default gateway. The gateway specified in this
field is more preferred than a default gateway learned from a DHCP (Dynamic Host Configuration Protocol) server. Use the icons associated with this field to perform
the following tasks:
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If you make any changes to the page, click Submit to apply the changes to the system.
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