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
OL-4580-01
The ASBR can perform external route summarization to consolidate multiple
routes into a single advertisement. For a CSS, this consolidation is useful when
you want to advertise VIP addresses for content as OSPF AS external (ASE)
through all OSPF interfaces. Use the ospf advertise command to advertise a route
as OSPF ASE through all OSPF interfaces. To stop the advertisement of the route,
use the no form of the ospf advertise command (as described later in this section).
Note When using OSPF to advertise a VIP address, do not configure this address on a
content rule as a single VIP address when another content rule includes it within
its VIP address range. If you do, OSPF may make erroneous advertisement
decisions or some rules may appear to have the wrong VIP redundancy state
associated with them.
First, before you enter the ospf advertise command, configure the CSS as an
ASBR. For more information, see the “Configuring the CSS as an Autonomous
System Boundary Router” section.
Define an address range for the ospf advertise command by specifying an IP
address and subnet mask that represents networks in the area being summarized.
Enter the IP address and subnet mask in dotted-decimal notation (for example,
192.168.128.0 255.255.224.0). You can also enter the mask in CIDR bit-count
notation format (for example, /24).
For example, to advertise VIP addresses from 192.168.44.0 to 192.168.44.255,
define the range by entering the IP address and subnet mask of 192.168.44.0
255.255.255.0:
(config)# ospf advertise 192.168.44.0 255.255.255.0
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.