Got it

BGP routes are recieved, however it does not go to the routing table.

Latest reply: Nov 26, 2018 14:09:51 1253 5 6 0 1
This post was last edited by Torrent at 2018-11-15 07:36.
                 BGP routes are recieved, however it does not go to the routing table.

                Because the bgp route next hop is x.x.x.x             

                 

                But there is no route to x.x.x.x at local

                [~CLK-ACCTN-CORE01-bgp]dis ip routing-table 
Route Flags: R - relay, D - download to fib, T - to vpn-instance, B - black hole route
------------------------------------------------------------------------------
Routing Table : _public_
         Destinations : 162      Routes : 162       
 
Destination/Mask    Proto   Pre  Cost        Flags NextHop         Interface
 
        0.0.0.0/0   Static  60   0             RD  s.s.s.s   Eth-Trunk100
    10.224.2.32/30  Direct  0    0             D   10.224.2.33     GigabitEthernet8/1/2.21
    10.224.2.33/32  Direct  0    0             D   127.0.0.1       GigabitEthernet8/1/2.21
    10.224.2.35/32  Direct  0    0             D   127.0.0.1       GigabitEthernet8/1/2.21
   z.z.z.z.0/24  Static  60   0             DB  0.0.0.0         NULL0
   z.z.z.z.1/32  Direct  0    0             D   127.0.0.1       LoopBack0
   z.z.z.z.2/32  O_ASE   150  1             D   c.c.c.c.2    Eth-Trunk101
   z.z.z.z.3/32  O_ASE   150  1             D   c.c.c.c.2    Eth-Trunk101
   z.z.z.z.4/32  O_ASE   150  11            D   c.c.c.c.2    Eth-Trunk101
  z.z.z.z.21/32  O_ASE   150  1             D   c.c.c.c.2    Eth-Trunk101
  z.z.z.z.22/32  O_ASE   150  1             D   c.c.c.c.2    Eth-Trunk101
  z.z.z.z.23/32  O_ASE   150  1             D   c.c.c.c.2    Eth-Trunk101
   c.c.c.c.0/24  Static  60   0             DB  0.0.0.0         NULL0
   c.c.c.c.0/30  Direct  0    0             D   c.c.c.c.1    Eth-Trunk101
   c.c.c.c.1/32  Direct  0    0             D   127.0.0.1       Eth-Trunk101
   c.c.c.c.3/32  Direct  0    0             D   127.0.0.1       Eth-Trunk101
  c.c.c.c.32/30  Direct  0    0             D   c.c.c.c.33   GigabitEthernet8/1/2.20
  c.c.c.c.33/32  Direct  0    0             D   127.0.0.1       GigabitEthernet8/1/2.20
  c.c.c.c.35/32  Direct  0    0             D   127.0.0.1       GigabitEthernet8/1/2.20
   f.f.f.f.0/24  Static  60   0             DB  0.0.0.0         NULL0
   g.g.g.g.0/24  Static  60   0             DB  0.0.0.0         NULL0
    a.a.a.a.0/23  Static  60   0             DB  0.0.0.0         NULL0
    a.a.a.a.0/24  O_ASE   150  1             D   c.c.c.c.2    Eth-Trunk101
    e.e.e.e.0/23  O_ASE   150  1             D   c.c.c.c.2    Eth-Trunk101
    r.r.r.r.0/23  O_ASE   150  1             D   c.c.c.c.2    Eth-Trunk101
    y.y.y.y.0/24  O_ASE   150  1             D   c.c.c.c.2    Eth-Trunk101

                The solution is to add one route to x.x.x.x  at local, then all bgp route will appear at route table.

  • x
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yjhd
Created Nov 15, 2018 07:25:05

i 1.0.132.0/22 202.69.160.123 100 0 38040 23969?


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i 1.0.168.0/22 202.69.160.123 100 0 38040 23969?
i 1.0.172.0/22 202.69.160.123 100 0 38040 23969?
i 1.0.176.0/20 202.69.160.123 100 0 38040 23969?
i 1.0.192.0/18 202.69.160.123 100 0 38040 23969i
i 1.0.192.0/19 202.69.160.123 100 0 38040 23969i
View more
  • x
  • convention:

limgsc
Created Nov 15, 2018 07:31:38

your document is work for me , i get the point , fix my issue by your doc thanks you very much ,
also hope you public more doc that levle like this .
would you please also mention where from the technical detail , i can found it from orignial part .
from orignial part i can found more correct parameter , this is more important .
View more
  • x
  • convention:

limgsc
Created Nov 15, 2018 07:31:48

your document is work for me , i get the point , fix my issue by your doc thanks you very much ,
also hope you public more doc that levle like this .
would you please also mention where from the technical detail , i can found it from orignial part .
from orignial part i can found more correct parameter , this is more important .
View more
  • x
  • convention:

Skay
Created Nov 15, 2018 07:54:55

1. Synchronization: By default, my local router learns a route through an IBGP neighbor. By default, it does not put in the routing table.

I don't advertise it to other neighbors until I learn this neighbor from the IGP. It is to solve both the control level and the data level.

2. Next hop:

Synchronization solution: 1: Learn from IGP to not recommend /no synchronization to close synchronization (high version is off by default)) for IBGP.

Next hop solution: 1 write static is not recommended / Next-hop-self
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  • x
  • convention:

littlestone
Created Nov 26, 2018 14:09:51

there are routes in the routing table that are not necessarily PING-connected. You can check whether the NEXT-HOP of this route is reachable.
Usually the next hop is black hole routing, so PING is not available. But I suggest you try a few commands and do a comprehensive search.
1. show ip BGP ex X. X. X. x to see the route information
2, show ip BGP to see if there is an optimal path >
3, Ping X.X.X.X.X sou x.x.x.x band source Ping
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  • x
  • convention:

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