network-freak

In our previous blog, we configured iBGP between Nokia SR Routers. PE01 received routes from CE via eBGP and advertised them to PE02. Nokia Router (Alcatel-Lucent) BGP configuration Basic Let's explore the output of PE02 for the prefix 10.10.10.5/32 advertised from CE01. Prefix 10.10.10.5/32  is available in the BGP table of PE02 as per the below output, the route is not installed in the routing table of PE02. lets us explore the reason for not installing in its routing table of PE02.      From the above Output says that Invalid IGP for the next-hop advertised by the PE01 for the  prefix 10.10.10.5. By default when the route is advertised from ebgp it will change the next-hop to its own IP. but in the case of iBGP, let's apply the policy to change the next-hop. /configure router bgp group ibgp-internal next-hop-self  After configuring the next-hop-self command on PE01, Now PE01 advertising its IP as net-hop for the  prefix 10.1.5.5 and installing it in...

Let's explore few concepts of BGP and how to configure it on the Nokia 7750 SR Border gateway protocol is mainly used by Service Providers to carry the huge routing information between different Autonomous Systems. It uses the well-known TCP port number 179. BGP uses TCP protocol for authenticating its peer router session. There are two types of BGP as listed below 1. IBGP (Internal BGP used to share routing information within its own AS) 2. Ebgp (External BGP used to share routing information between 2 different AS) Let's explore how to configure BGP types as per the below topology. IGP is pre-configured as per topology. 1. IBGP configuration between PE01 to PE02  Forming IBGP between Router system IP/Loopback address is a best practice for family ipv4. why are we configuring internal BGP on SYSTEM/LOOPBACK IP? If we configure the adjacency using the physical interface for the ipv4 family it will lead to failure if that particular interface goes down. Even if we have an altern...

We going to discuss how to configure and bring up the Nokia chassis for the first-time installation like SFM, IOM/IMM Card, and MDA on Nokia 7750/77XX series router. SFM Card - Switch Fabric Module which is an internal backplane used to switch traffic between different slots on the router chassis. IMM -    Integrated Media Module which is your line card with a fixed number of media/ports IOM - Input/Output Module this type of card we can insert different types of media/ports based on the supported type by each Chassis. Let us explore how to identify and configure our Nokia SR series routers. 1. First find the SFM Type inserted on the Nokia Router. as per the output we need to configure  SFM5 to bring up the Switch fabric module A:SR1# configure sfm 1 sfm-type m-sfm5-12 Now SFM is configured let's find the Card Type using the "show card" command  *A:SR1# configure card 1 card-type "iom3-xp" Now, we are in the final phase to bring up the ports. check and configur...