soft-reconfiguration command for BGP

RouterOS Forwarding Protocols
1

Is it possible?

2

http://wiki.mikrotik.com/wiki/BGP_soft_reconfiguration_alternatives_in_RouterOS

3

Ok, Thank you,
That’s exactly what I need.
There are some other questions about my “classic BGP topology” → AS2-AS1-AS3

I want to have default route on my AS2 router (from AS1)
To make that, I need to create “static route” 0.0.0.0/0 on AS1. Whithout that “Default Originate” on AS1 not working.
Is it ok or there same “Hint” about this?

I’ve put my BGP config from AS1 router bellow

[admin@MT-Test-AS1] > routing bgp peer print detail
Flags: X - disabled, E - established
0 E name=“AS-40002” instance=default remote-address=172.16.1.2 remote-as=40002 tcp-md5-key=“” nexthop-choice=default multihop=no route-reflect=no hold-time=3m ttl=default in-filter=“” out-filter=“”
address-families=ip default-originate=if-installed remove-private-as=no as-override=no passive=no use-bfd=no

1 E name=“AS-40003” instance=default remote-address=172.16.1.6 remote-as=40003 tcp-md5-key=“” nexthop-choice=default multihop=no route-reflect=no hold-time=3m ttl=default in-filter=“” out-filter=“”
address-families=ip default-originate=never remove-private-as=no as-override=no passive=no use-bfd=no
[admin@MT-Test-AS1] > routing bgp advertisements print
PEER PREFIX NEXTHOP AS-PATH ORIGIN LOCAL-PREF
AS-40002 77.240.240.0/24 172.16.1.1 40003 igp
AS-40002 77.240.248.0/24 172.16.1.1 40003 igp
AS-40002 75.140.140.0/24 172.16.1.1 igp
AS-40002 0.0.0.0/0 172.16.1.1 incomplete
AS-40002 78.140.140.0/24 172.16.1.1 igp
AS-40002 172.16.1.0/24 172.16.1.1 igp
AS-40003 193.138.191.0/24 172.16.1.5 40002 igp
AS-40003 193.138.188.0/24 172.16.1.5 40002 igp
AS-40003 75.140.140.0/24 172.16.1.5 igp
AS-40003 78.140.140.0/24 172.16.1.5 igp
AS-40003 172.16.1.0/24 172.16.1.5 igp
[admin@MT-Test-AS1] >

For some resone I can see routes that are belong to AS3 on my AS2 router.
Is it OK? Because I thing that AS1 shouldn’t announce "by default» all AS’s that is connected to it.
Of cause I can filter this by filter list, but is it the right way?

I can’t find anything regarding “Remove Private AS” function?
Could you please give me a brief explanation about this?

WBR

4

please use English =) I can’t help you, but others can :slight_smile:

and about 2nd clause, please post your BGP config

5

Any Ideas?

6

  1. if you tick ‘Default originate’ via WinBox, it actually becomes ‘default-originate=if-installed’. via CLI, you can set it to ‘always’ - maybe it’s what you want

  2. do you have ‘redistribute BGP routes’ enabled in your BGP Instance?

  3. see http://wiki.mikrotik.com/wiki/BGP#Peer - actual documentation is in Wiki =)