What is BGP PIC Edge?

The BGP PIC Edge for IP and MPLS-VPN feature creates and stores a backup or alternate path in the routing information base (RIB), forwarding information base (FIB), and Cisco Express Forwarding. When a failure is detected, the backup or alternate path immediately takes over, thus enabling fast failover.

What is PIC core?

PIC (Prefix Independent Convergence) is a feature to decrease the data plane convergence time. There are two flavors: BGP PIC Core: decreases convergence time when a core router fails and your IGP has to find a new best path to your PE router.

What is BGP add path?

Additional paths is an extension to BGP and it adds a unique path identifier to each path. The path ID is similar to how the RD (Route Distinguisher) works in MPLS VPN, except the path IDs can be used in any BGP address family.

Does BGP do load balancing?

BGP cannot load balance between routes by route metrics as an IGP protocol does, because BGP does not have a route computation algorithm. BGP uses the following load balancing criteria to determine load balanced routes: The routes have the same ORIGIN, LOCAL_PREF, and MED attributes.

How load balancing is done in BGP?

Step-by-Step Procedure

  1. Configure the BGP group.
  2. Enable the BGP group to use multiple paths.
  3. Configure the load-balancing policy.
  4. Apply the load-balancing policy.
  5. Configure the local autonomous system (AS) number.

Can BGP do load balancing?

Does BGP require IGP?

The IGP is used to establish the BGP session (TCP session) and to resolve the BGP next hop. eBGP, on the other hand, is generally configured using the directly connected interface address.

Why is BGP stuck in active state?

BGP stuck in ACTIVE state. The possible reasons are: TCP connection is initiated and it is in ACTIVE state i.e. LISTENING state.It is waiting for the TCP connection to complete. Peer address configured incorrectly on either router.

Which is preferred Ibgp or Ebgp?

Here is the solution simular to what most students apply to R1. Now lets look at that 114.0. 0.0/8 path on R2 after the above configuration is applied. We can see now that R2 prefers the iBGP path from R1 over the eBGP path from R3 due to the higher local preference set by R1 (200 as opposed to the default of 100).

Why we use BGP instead of IGP?

BGP was purpose-built for exchanging routes between autonomous systems. IGPs were not designed to handle the scale of routing information and their functioning would be negatively impacted by the large scale of the Internet routing table. second Q: what is bgp attributes and how the bgp find its way on IBGP and EBGP?