user manual
Table Of Contents
- Cisco Content Services Switch Routing and Bridging Configuration Guide
- Contents
- Preface
- Configuring Interfaces and Circuits
- Interface and Circuit Overview
- Configuring Interfaces
- Configuring an Interface
- Entering a Description for the Interface
- Configuring Interface Duplex and Speed
- Setting Interface Maximum Idle Time
- Bridging an Interface to a VLAN
- Specifying VLAN Trunking for an Interface
- Configuring Spanning-Tree Bridging for a VLAN or a Trunked Interface
- Configuring Port Fast on an Interface
- Showing Interface Configurations
- Shutting Down an Interface
- Shutting Down All Interfaces
- Restarting an Interface
- Restarting All Interfaces
- Configuring Circuits
- Configuring RIP for an IP Interface
- Configuring the Switched Port Analyzer Feature
- Configuring Spanning-Tree Bridging for the CSS
- CSS Spanning-Tree Bridging Quick Start
- Configuring Spanning-Tree Bridge Aging-Time
- Configuring Spanning-Tree Bridge Forward-Time
- Configuring Spanning-Tree Bridge Hello-Time
- Configuring Spanning-Tree Bridge Max-Age
- Configuring Spanning-Tree Bridge Priority
- Disabling Bridge Spanning-Tree
- Showing Bridge Configurations
- Configuring Open Shortest Path First (OSPF)
- OSPF Overview
- CSS OSPF Configuration Quick Start
- Configuring OSPF on the CSS
- Configuring OSPF on a CSS IP Interface
- Showing OSPF Information
- OSPF Configuration in a Startup-Configuration File
- Configuring the Address Resolution Protocol
- Configuring Routing Information Protocol
- Configuring the Internet Protocol
- IP Configuration Quick Start
- Configuring an IP Route
- Disabling an Implicit Service for the Static Route Next Hop
- Configuring an IP Source Route
- Configuring the IP Record Route
- Configuring Box-to-Box Redundancy
- Configuring IP Equal-Cost Multipath
- Forwarding IP Subnet Broadcast Addressed Frames
- Configuring IP Unconditional Bridging
- Configuring IP Opportunistic Layer 3 Forwarding
- Showing IP Configuration Information
- Configuring the Cisco Discovery Protocol
- Configuring the DHCP Relay Agent
- Index
Chapter 3 Configuring Open Shortest Path First (OSPF)
Configuring OSPF on the CSS
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Cisco Content Services Switch Routing and Bridging Configuration Guide
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To advertise a route as OSPF ASE through all OSPF interfaces or generate a
default route, see the following sections.
• Advertising a Route as an OSPF ASE Route
• Advertising a Default ASE Route
• Advertising Other Routes Through OSPF
Advertising a Route as an OSPF ASE Route
The CSS OSPF functionality examines configuration parameters (such as service
configurations in content rules, keepalive behavior, VIP redundancy
configurations, and whether services are active or suspended) to make accurate
advertisement decisions on VIPs.
Specified routes related to VIPs are only advertised if both of the following
conditions are true:
• At least one of the related VIPs in a content rule or source group is active.
• At least one service related to an active VIP is available on a content rule.
If you configured the CSS for box-to-box redundancy, be aware that only the
master CSS (not the backup CSS) advertises the VIP.
We recommend that you use the /32 prefix in the ospf advertise command to
specify VIPs individually. Specifying entire subnets does not enable the CSS to
make proper decisions on advertising the VIPs. The advertisement must match or
fit entirely within a VIP range to make proper decisions. If the OSPF advertise IP
address range and the VIP range overlap, or the OSPF advertise range
encapsulates (that is, is larger than) or doesn’t match the VIP range, then the route
is advertised unconditionally.
The following flow chart shows the steps required for OSPF to advertise an IP
address. If the IP address is a VIP, the flowchart shows the conditions that must
be met for OSPF to advertise the VIP.