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Cisco Content Services Switch Routing and Bridging Configuration Guide
OL-4580-01
Chapter 3 Configuring Open Shortest Path First (OSPF)
Configuring OSPF on the CSS
Optionally, you can define any of the following:
• The network cost for the route by including the metric option. Enter a number
from 1 to 16777215. The default is 1.
• A 32-bit tag value to advertise each external route by including the tag option.
The 32-bit tag value is not used by the OSPF protocol itself. You can use the
tag value to communicate information between ASBRs.
• The advertised routes as ASE type1 by including the type1 option. By
default, the type is ASE type2. The difference between type1 and type2 is
how the cost is calculated. For a type2 ASE, only the external cost (metric) is
used when comparing multiple paths to the same destination. For type1 ASE,
the combination of the external cost and the cost to reach the ASBR is used.
For example:
(config)# ospf advertise 193.23.44.0 255.255.255.0 metric 3 type1
To stop advertising of the route as OSPF ASE through all OSPF interfaces, enter:
(config)# no ospf advertise 193.23.44.255.255.255.0
The following running configuration example illustrates the ospf advertise
command for OSPF advertising of VIP addresses and an IP address. Comments are
preceded by an exclamation point (!).
!*************************** GLOBAL ***************************
ospf enable
ospf advertise 1.1.1.10
!advertise redundant VIP
ospf advertise 2.1.1.1
!advertise IP address of service s1
ospf advertise 1.1.1.100
!advertise IP address of critical service c100
ospf advertise 99.99.99.99
!advertise simple IP address, not tied to anything
record
!************************** CIRCUIT **************************
circuit VLAN1
ip address 1.1.1.200 255.0.0.0
ip virtual-router 1
ip redundant-vip 1 1.1.1.10
!redundant VIP
ip critical-service 1 c100