Priority in OSPF is mainly used to influence/determine a designated router/backup designated router for a network. By default, the priority is 1 on all routers. A router with a high priority will always win the DR/BDR election process. However, you can make a router not participate in the election at all if you configure the priority to 0.

2024年11月15日 · configure router ospf 1 router-id 1.1.1.1 segment-routing global-block 9000099999 segment-routing mpls area 0 interfaceLoopback1 passive enable prefix-sid index 1 ! interfaceGigabitEthernet0/0/0/3 network point-to-point ! interfaceGigabitEthernet0/0/0/4 cost 50 network point-to-point commit end

OSPF process ID is first of all locally significant meaning that it is local to the router and doesn’t impact on two OSPF neighbor routers forming adjacency in case they are not the same. Cisco IOS are able to run multiple OSPF processes on the same device.

OSPF and NAT are completely separate concepts. NAT simply translates IP addresses from one to another. You can map the 192.168.0.0/24 network to a single IP address 200.0.0.0 by using NAT overload. However, now you need to advertise a route to reach the new IP address or otherwise the neighboring routers will not know how to forward traffic back to 200.0.0.0. That is …

Briefly describe the article. The summary is used in search results to help users find relevant articles. You can improve the accuracy of search results by including phrases that your customers use to describe this issue or topic. Article Number 000008337 Created By smartanks, 2/13/2020 4:38 PM Enterprise Certifications Community

In a Network currently OSPF is stable (all routers inter area and intra area synchronized their database) and running fine. Now what will happen when there is a link or an interface goes down (on which ospf is running and it is a stub link). What types of LSAs are generated and how they propogated to other areas. in simple the ospf has to withdraw a route from it's domain. I need …

The OSPF DR on the other hand is a pseudonode that collects and floods link-state information in broadcast/non-broadcast segments to prevent unnecessary and duplicate flooding of LSAs and is elected based on interface priorities or router-IDs (RID).

After, I assigned to this X vrf into the interface which has been already enable for global OSPF routing, the router LSA doesn't withdraw from its LSDB (Here is R1) and it is still advertising to its peer with the cost of 65535. Even though, I tried to clear the global OSPF routing process or reboot the router, the LSA is still there.

Hi, This might be lame question but want to confirm if we can use area ID both in number and decimal format. What I mean is in a single area 1 can I use "area 1" as stub & another "area 1.1.1.1 as nssa" in single OSPF process?

No interference to LSA or LSDB. It is a way to configure which interfaces will have OSPF enabled. The type of area does interfere in LSDB or LSA. The network command is used to announce which interfaces will have OSPF enabled . Remember that it uses a wildcard mask ( inverse of network mask). In a wildcard mask , 0 is a match and 1 doesn´t care.