are able to ping P2P and loopback IP from A to B and also vice versa.

Latest reply: Dec 31, 2018 23:00:11 323 7 10 0

【Problem Description】

are able to ping P2P and loopback IP from A to B and also viceversa.

And ping from Device A to C and C to A is also fine.  

We are also able to ping between B and C but if we are pingingrouter A from B by taking source IP as for C then we are unable to ping.


【Problem Analysis】

As just remote session, C cannot ping A, also B cannot ping A bytaking source address 172.30.250.2.

That means A cannot create connectivity with 172.30.250.0/30segment, this is in line with our judgment.

Because the fib table is fully.

 

Also you can see there are alarms for the L3 resource usage.

 

And as we found, much many 32-bit detailed bgp route learned onthe A-hyd device which is crazy

Generally, the learned BGP routes are summarized routes.

  1. Asyou can see the fib entry count, and the mode is enhanced-arp that is defaultmode.

<hyd.br1-tdc.r1-hua-6720>disfib 0 statistics

RouteEntry Count : 13737

RoutePrefix Count : 13737

<hyd.br1-tdc.r1-hua-6720>disresource-mode configuration

Slot      Current Mode    Next Mode

-- - - - - - - - - - - - - - - - - - - - - -

0          enhanced-arp   enhanced-arp

 

  1. Italready exceeds the ipv4 fib resource specification.

 

  1. Andyou cannot change the resource allocation mode because mac-addresses of thedevice are also large.

 

  1. Thereare still a lot of 32-bit detailed bgp route learned on this device, you maycontinue to aggregate them.


【Root Cause】

routing exceeds the ipv4 fib resource specification
【Solution Description】

Please aggregate the bgp routes on your network.


  • x
  • convention:

GongXiaochuan Created Dec 26, 2018 10:00:07 Helpful(0) Helpful(0)

BGP router aggregate on customer network ,
  • x
  • convention:

Good Good Study Day Day Up
yjhd Created Dec 26, 2018 10:57:16 Helpful(0) Helpful(0)

Thereare still a lot of 32-bit detailed bgp route learned on this device, you maycontinue to aggregate them.
  • x
  • convention:

Torrent Created Dec 28, 2018 11:50:06 Helpful(0) Helpful(0)

are able to ping P2P and loopback IP from A to B and also viceversa.


And ping from Device A to C and C to A is also fine.


We are also able to ping between B and C but if we are pingingrouter A from B by taking source IP as for C then we are unable to ping.

can you drop a topo for this issue?
  • x
  • convention:

Finn92 Created Dec 29, 2018 09:50:58 Helpful(0) Helpful(0)

And as we found, much many 32-bit detailed bgp route learned onthe A-hyd device which is crazy


Generally, the learned BGP routes are summarized routes.






1.Asyou can see the fib entry count, and the mode is enhanced-arp that is defaultmode.



<hyd.br1-tdc.r1-hua-6720>disfib 0 statistics


RouteEntry Count : 13737


RoutePrefix Count : 13737


<hyd.br1-tdc.r1-hua-6720>disresource-mode configuration


Slot Current Mode Next Mode


-- - - - - - - - - - - - - - - - - - - - - -


0 enhanced-arp enhanced-arp

it's very helpful
  • x
  • convention:

SupperRobin Created Dec 29, 2018 11:30:50 Helpful(0) Helpful(0)

we found, much many 32-bit detailed bgp route learned onthe A-hyd device which is crazy

Generally, the learned BGP routes are summarized routes.
  • x
  • convention:

littlestone Created Dec 29, 2018 19:16:36 Helpful(0) Helpful(0)

PPPoE (English: Point-to-Point Protocol Over Ethernet), a point-to-point protocol on ethernet, is a network tunnel protocol encapsulated in the framework of ethernet. Because PPP protocol is integrated in the protocol, authentication, encryption and compression can not be provided by traditional Ethernet are realized.
  • x
  • convention:

w1 Created Dec 31, 2018 23:00:11 Helpful(0) Helpful(0)

Thanks for your sharing about so issue, it is very comman in router network, normally, we miss some configration, or the design is wrong, this case show us how to check,thanks for sharing
  • x
  • convention:

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