@Roo5331 So sorry for coming back to you so late, your comment for some reason was in the held queue for unknown reason. Nonetheless, thank you for the question! When configuring OSPF on point-to-point links, like serial connections, the command "ip ospf network point-to-point" is needed to ensure OSPF optimizes neighbor relationships without DR/BDR elections. For encapsulations: - HDLC (default on Cisco serial interfaces) is efficient but lacks features like authentication. - PPP (encapsulation ppp) is ideal for secure point-to-point links, as it supports authentication (PAP/CHAP). - Frame Relay works for WANs with multiple endpoints and should use the OSPF point-to-multipoint network type. Each encapsulation serves different needs based on network type and requirements. Let me know if you’d like more details!
@Roo5331 In OSPF’s point-to-multipoint configuration, routers connected over non-broadcast multi-access (NBMA) networks-like Frame Relay-can establish neighbor relationships without requiring a DR/BDR election. This setup treats each link as a collection of point-to-point connections, allowing OSPF to handle each link independently. Key Advantages: Neighboring: Routers form adjacencies without DR/BDR roles. Routing Efficiency: Routes are advertised to each neighbor individually, reducing the potential for routing issues on complex networks. In most setups, point-to-multipoint is configured for NBMA networks where each remote site communicates directly with a central hub Take a loot at this URL Cisco explains it well in this discussion:: community.cisco.com/t5/routing/ospf-point-to-multipoint-network-type/td-p/3687411
@Shubham-Mishra Thank you for your comment! I’m not sure what your background is, but I’d recommend going over the OSPF basics first. Once you’ve got a good grasp of the theory, this lab will be much easier to tackle. Feel free to reach out if you need any help, and check out the link below for more info about OSPF: www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/9-x/unicast/configuration/guide/l3_cli_nxos/l3_ospf.html P.S. No need to read the entire article, but it will give you a solid overview of OSPF.
Great videos
@JAYSHREERAM-z4j Thank you for your comment :)
Thank you for the video! Do i also need to include #ip ospf network point-to-point? i am confused when do I have to use this and #encapsulation ppp
@Roo5331 So sorry for coming back to you so late, your comment for some reason was in the held queue for unknown reason.
Nonetheless, thank you for the question! When configuring OSPF on point-to-point links, like serial connections, the command "ip ospf network point-to-point" is needed to ensure OSPF optimizes neighbor relationships without DR/BDR elections.
For encapsulations:
- HDLC (default on Cisco serial interfaces) is efficient but lacks features like authentication.
- PPP (encapsulation ppp) is ideal for secure point-to-point links, as it supports authentication (PAP/CHAP).
- Frame Relay works for WANs with multiple endpoints and should use the OSPF point-to-multipoint network type.
Each encapsulation serves different needs based on network type and requirements. Let me know if you’d like more details!
@ thank you! Am very interested to know more details especially ospf point to multipoint :)
@Roo5331 In OSPF’s point-to-multipoint configuration, routers connected over non-broadcast multi-access (NBMA) networks-like Frame Relay-can establish neighbor relationships without requiring a DR/BDR election. This setup treats each link as a collection of point-to-point connections, allowing OSPF to handle each link independently.
Key Advantages:
Neighboring: Routers form adjacencies without DR/BDR roles.
Routing Efficiency: Routes are advertised to each neighbor individually, reducing the potential for routing issues on complex networks.
In most setups, point-to-multipoint is configured for NBMA networks where each remote site communicates directly with a central hub
Take a loot at this URL Cisco explains it well in this discussion::
community.cisco.com/t5/routing/ospf-point-to-multipoint-network-type/td-p/3687411
Seems difficult for me.. i guess i have to check ospf from the scratch
@Shubham-Mishra Thank you for your comment! I’m not sure what your background is, but I’d recommend going over the OSPF basics first. Once you’ve got a good grasp of the theory, this lab will be much easier to tackle. Feel free to reach out if you need any help, and check out the link below for more info about OSPF:
www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/9-x/unicast/configuration/guide/l3_cli_nxos/l3_ospf.html
P.S. No need to read the entire article, but it will give you a solid overview of OSPF.