07-17-2003 11:19 PM - edited 03-02-2019 08:56 AM
I have a 3550-EMI running OSFP.
Is there any way I can get the switch to advertise seconary addresses into OSPF. The secondary addresses are included in the OSFP network statement
07-18-2003 02:52 AM
Hi
For sure you can not establish a ospf adjaccency.
See:
http://www.cisco.com/warp/public/104/29.html#adj
What you can do is create a static route which points
to the null interface and redistribute the static route.
ip route x.x.x.x x.x.x.x null 0
router ospf 1
redistribute static subnets
Hope that helps
Roger
07-18-2003 06:02 AM
In my experience (I just looked at one of my old routers, not a 3550) OSPF will advertise secondary addresses AS LONG AS THE PRIMARY IS ADVERTISED. Check the network statement and make sure it is correct.
07-18-2003 09:18 AM
This is correct--as long as the primary is covered by a network statement, the secondary will be advertised. On a router:
interface Ethernet1/2
ip address 144.1.1.1 255.255.255.0 secondary
ip address 208.0.6.4 255.255.255.0
ip directed-broadcast
no ip route-cache
no ip mroute-cache
duplex half
!
router ospf 100
log-adjacency-changes
network 144.1.1.0 0.0.0.255 area 0
network 208.0.6.0 0.0.0.255 area 0
....
7206F#sho ip ospf data router
OSPF Router with ID (208.0.10.4) (Process ID 100)
Router Link States (Area 0)
LS age: 75
Options: (No TOS-capability, DC)
LS Type: Router Links
Link State ID: 208.0.10.4
Advertising Router: 208.0.10.4
LS Seq Number: 80000002
Checksum: 0x27BD
Length: 48
AS Boundary Router
Number of Links: 2
Link connected to: a Stub Network
(Link ID) Network/subnet number: 208.0.6.0
(Link Data) Network Mask: 255.255.255.0
Number of TOS metrics: 0
TOS 0 Metrics: 10
Link connected to: a Stub Network
(Link ID) Network/subnet number: 144.1.1.0
(Link Data) Network Mask: 255.255.255.0
Number of TOS metrics: 0
TOS 0 Metrics: 10
It won't advertise the secondary without the primary listed in the network statement.
Russ.W
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