BGP-no synchronization

[Anukalp S]

Hi,

I could not see "no synronization" and "no auto-summary" command under BGP config after configuring both. I have cisco 1900 router running cisco IOS 15.1(4)M4.Can any one pls suggest.

[Steven Clinton]

Those are cisco's default commands, default commands will not show up. If you change it to auto summary and do a show run it will show up, but then change it back to no auto summary it will disappear

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[InayathUlla Sharieff]

Hi Anu,

Do you mean this:

R1(config-if)#router eigrp 10

R1(config-router)#network 192.168.0.1

R1(config-router)#no auto-summary

R1(config-router)#end

R1#sh run | in auto-summary

no auto-summary>>>>>>>>> This you are not seeing?

2)

R1(config)#router bgp 1

R1(config-router)#no sy

R1(config-router)#no synchronization

R1(config-router)#end

R1#sh run  | in synchronization

no synchronization  >>>>>>>>> This you are not seeing?

My ios:

R1#sh ver

Cisco IOS Software, 3600 Software (C3640-JK9O3S-M), Version 12.3(14)T7, RELEASE SOFTWARE (fc2)

If yes then i could look for bug.

REgards

Inayath

[Anukalp S]

Yes Inayat.. i am not seeing "no synshronization" & "no auto-summary" under BGP aven after configuring it.Below are logs.

RTR#sh run | i synchronization

RTR#

RTR#sh ver

Cisco IOS Software, C1900 Software (C1900-UNIVERSALK9-M), Version 15.1(4)M4, RELEASE SOFTWARE (fc1)

[blau grana]

Hello,

You can check with #show ip protocol if you have sync & auto-summary enabled.

Can you please provide output of:

#sh run | s router bgp

#sh ip protocol

Best Regards

Please rate all helpful posts and close solved questions

[Anukalp S]

Hi blau,

Here is output.

============================

RTR#sh ip protocols
*** IP Routing is NSF aware ***

Routing Protocol is "ospf 1"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Router ID a.b.c.d
  It is an autonomous system boundary router
Redistributing External Routes from,
    bgp 65255, includes subnets in redistribution
  Number of areas in this router is 1. 1 normal 0 stub 0 nssa
  Maximum path: 4
  Routing for Networks:
    x.x.x.x x.x.x.x area 0
   
  Routing Information Sources:
    Gateway         Distance      Last Update
    x.x.x.x       110      1d01h
  Distance: (default is 110)

Routing Protocol is "bgp 65255"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  IGP synchronization is disabled
  Automatic route summarization is disabled
  Redistributing: ospf 1
  Neighbor(s):
    Address          FiltIn FiltOut DistIn DistOut Weight RouteMap
    x.x.x.x
  Maximum path: 1
  Routing Information Sources:
    Gateway         Distance      Last Update
    x.x.x.x          20          00:01:44
  Distance: external 20 internal 200 local 200

RTR#sh run | s router bgp
router bgp 65354
bgp log-neighbor-changes
network x.x.x.x mask x.x.x.x

neighbor x.x.x.x remote-as 9321
neighbor x.x.x.x soft-reconfiguration inbound

=================================

[blau grana]

As you can see sync and summarization is disabled which is default state so you will not see these command on configuration.

  IGP synchronization is disabled

  Automatic route summarization is disabled

When you configure:

  auto-summary

  synchronization

under BGP, you will see them in configuration and also in sh ip protocol output as enabled.

Best Regards

Please rate all helpful posts and close solved questions

[Steven Clinton]

Do a 'show run all' , this will include the default configs. Or to see specifically what you are try to see with.BGP:

sh run all | sec router bgp

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