Svi Autostate Exclude - Cisco WS-CBS3032-DEL Software Configuration Manual

Chapter 11 Configuring Interface Characteristics
SVIs provide IP host connectivity only to the system; in Layer 3 mode, you can configure routing across
SVIs.
Although the switch stack or switch supports a total of 1005 VLANs (and SVIs), the interrelationship
between the number of SVIs and routed ports and the number of other features being configured might
impact CPU performance because of hardware limitations. See the
section on page 11-25
reached.
SVIs are created the first time that you enter the vlan interface configuration command for a VLAN
interface. The VLAN corresponds to the VLAN tag associated with data frames on an 802.1Q
encapsulated trunk or the VLAN ID configured for an access port. Configure a VLAN interface for each
VLAN for which you want to route traffic, and assign it an IP address. For more information, see the
"Manually Assigning IP Information" section on page
When you create an SVI, it does not become active until it is associated with a physical port.
Note
SVIs support routing protocols and bridging configurations. For more information about configuring IP
routing, see
Routing,"and
The IP base feature set supports static routing and RIP. For more advanced routing or for fallback
Note
bridging, enable the IP services feature set on standalone switch, or the stack master.

SVI Autostate Exclude

The line state of an SVI with multiple ports on a VLAN is in the up state when it meets these conditions:
•
•
•
The protocol link state for VLAN interfaces come up when the first switchport belonging to the
Note
corresponding VLAN link comes up and is in STP forwarding state.
The default action, when a VLAN has multiple ports, is that the SVI goes down when all ports in the
VLAN go down. You can use the SVI autostate exclude feature to configure a port so that it is not
included in the SVI line-state up-an- down calculation. For example, if the only active port on the VLAN
OL-13270-06
for information about what happens when hardware resource limitations are
Chapter 39, "Configuring IP Unicast Routing," Chapter 45, "Configuring IP Multicast
Chapter 47, "Configuring Fallback Bridging."
The VLAN exists and is active in the VLAN database on the switch.
The VLAN interface exists and is not administratively down.
At least one Layer 2 (access or trunk) port exists, has a link in the up state on this VLAN, and is in
the spanning-tree forwarding state on the VLAN.
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
Understanding Interface Types
"Configuring Layer 3 Interfaces"
3-15.
11-5