Bgp filter mikrotik v7 From there create a filter which matches the blackhole route and dump the smaller routes. . 2 and BGP is not respecting the filters for IPV6. mrz MikroTik Support Posts: 7027 Joined: Wed Feb 07, 2007 11:45 am Location: Latvia. It seems that MikroTik have been pressed into implementing a multi-threaded BGP implementation, especially because they were selling routers with more and more cores (like the CCR1072 with 72 cores) that were very slow in BGP for multiple full internet tables. Hoje fiz uma consultoria rápida que era migrar um BGP de uma CCR1036 para uma CCR2116 seguindo os passos que contei nesse vídeo. We cover BGP basics, neighbor setup, routing policies, and t Since ros v7. For example, to filter out routes with a specific BGP community, add this rule: /routing filter add bgp-communities=111:222 chain=bgp-in action=discard Then tell BGP peer to use that filter chain: /routing bgp peer set peer in-filter=bgp-in There is also an out-filter BGP peer parameter for filtering outgoing BGP updates. 0 set ge 17 unset le The same approach can be used in v7, except that instead of drop you can only reject in filter rules. 64. On your incoming filter for your primary feed set BGP WEIGHT to something like 10, as long as this is higher than the other feed it will be marked as primary Then on the outgoing filter of your secondary prepend your own AS 3 times. If I want to filter by source ASN, but I have multiple sources, can I put them We have 20 full mikrotik bgp routers with loads of filters and 200+ peers. If I want to filter by source ASN, but I have multiple sources, can I put them tried delete bgp-communities all and filter bgp-communities all, neither worked. How can I convert the following below chain= bgp-out-v4 prefix=2. We have 20 full mikrotik bgp routers with loads of filters and 200+ peers. (btw documentation really needs to be updated for v7 BGP in general - not just Unfortunately, applying the above into the filter chain, increases CPU very much. there is no in_filter and out_filter for bgp peer, how to achieve this in v7? Top. Hello everyone, I’m experiencing a problem with BGP configuration between MikroTik v7 and Cisco routers. I've gotten various tips on how to optimize this: - drop bogons with raw firewall Since ros v7. 1 RC3. Note: secara Routing dinamis merupakan salah satu cara untuk mendistribusikan informasi routing ke beberapa perangkat secara otomatis. I can see MikroTik building a GUI interface for the new syntax, but not for the old syntax. com/p/bgp-on-mikrotik-with-labs-from-entry-to-intermediate-level - In this video, I will show you how to configure BGP peers on Mik (in v6 set-bgp-prepend=3 worked both in input and output filter) It looks like the conversion from v6 to v7 handles this incorrectly. Out-Filter dan In-Filter ini nantinya bisa digunakan pada beberapa fitur routing dinamis pada mikrotik seperti OSPF, BGP, RIP, dll. MikroTik. 3 stable (chateau) and status of general release MikroTik then made some changes and opened up discussion to get Please feel free to use the timestamps to quickly navigate to a specific part of the video! We are covering how Route Filters function in RoSv7, what the big This a summary of feedback on the routing filter syntax from myself and the opinions of a number of other MikroTik users on the new route filtering format. wintech2003 just joined Posts: 10 Joined: Fri Jun 09, 2006 4:56 pm. config router prefix-list edit "IPv4_BOGONS" config rule edit 1 set prefix 0. BIRD; Junos; IOS-XR; OpenBGPD; FRR (vtysh) VyOS; Nokia SR OS; Mikrotik. 0/0 add action=accept chain=MyTransitProvider-IN prefix=::/0 # section 2 - Accept what my transit customer advertise me add action=accept chain=MyTransitCustomer-IN match-chain=MyTransitCustomerAS set add action=accept address-family=ip bgp-as-path-length=3 chain="TRANSIT_IPv4_IN" disabled=yes set-bgp-local-pref=100 add action=discard address-family=ip chain="TRANSIT_IPv4_IN" Now all is working as i expected, the filter is setting local preference as i decide, the problem is that the router use and decide to leave active a route Rules konfigurasi router BGP: Mengirimkan prefix IP publik; Menggunakan routing filter untuk mencegah IP bogon ter-advertise ke neighbor peer BGP MikroTik. In this video, I'm discussing about BGP Configuration Since it is a direct output of the data that is sent to the remote peer, then currently data is shown grouped the same way as it is grouped in NLRIs when sent out. Has anyone else faced this issue? The first implementation of routing filters in ROSv7 was difficult to work with and documented in the two articles below: MikroTik – RouterOSv7 first look – Dynamic routing with IPv6 and OSPFv3/BGP. Post by mrz » Wed Jun 05, 2024 6:36 am. If I want to filter by source ASN, but I have multiple sources, can I put them MikroTik. from my tests, filter removes matching communities while delete is an inversed filter, removing everything except the matching communities (does nothing if there are no matching communities). /routing filter rule add chain=primary disabled=no rule="set distance 10; set bgp-local-pref 100;" add chain=secondary disabled=no rule="set distance 20; set bgp-local-pref 70;" #Router #1 (v6. For example, I want to reject everything, I don't want to receive anything or announce anything. If both set-bgp-prepend and set-bgp-prepend-path are used then set-bgp-prepend will have highest priority. I don't like it either. nothing happens - /file/print does not list any capture file. I tested the route filter conversion from V6 to V7 but it doesn't work even though it is marked as completed. However I see that memory usage is 10 times more than on v6. Re: BGP V7 filter question. 10) /routing bgp instance set default out-filter=bgp-out redistribute-static=yes You should never do a peering like this without filters. Issue with BGP AS Path Filter for Blocking ASn on RouterOS v7. Forum index. For example this Code: add action=accept chain=V4-IPT-BGP-IN-AS000000 prefix=0. tried delete bgp-communities all and filter bgp-communities all, neither worked. On BGP output routing filters are executed before BGP itself is modifying attributes, for example, if nexthop-choice is set to force-self, then the gateway set Regular input filter chain can only reject prefixes which means that it will still eat memory and will be visible in /routing route table as "not active, filtered", A very basic example add chain=BGP_In disabled=no rule=" if ( dst==123. Has anyone else faced this issue? Scenario 2: MikroTik v7 to MikroTik - Everything works fine, including BGP filters. x but its really hard not to have bgp/advertisements, so this would be my #1 wish to get. And even less I like the fact that BFD still is not available. 0/24 that R2 will I even created an filter in v6, to convert to V7. 12 Filtering bgp routes. 1, I have a problem with a bgp filter concerning the bogon list that I receive from team cymru. I hit resend and apparently the connection to the peer says "--SESSION IS STOPPED" the only way to get it to re-establish is go to sessions and hit "Clear" button and choose a flag of "stopped". The filter I am trying to implement is as In-Filter digunakan untuk menentukan rule routing yang masuk ke router. Thank you, Code: Select all /routing filter # section 1 - Accept what my transit provider advertise me add action=accept chain=MyTransitProvider-IN prefix=0. Learn to configure BGP on your MikroTik RouterOS v7 router easily with this comprehensive guide. Hello everyone, I am currently facing an issue with a BGP AS Path filter on RouterOS v7. baragoon Member Posts: 336 Joined: Thu Jan 05, 2017 9:38 am Location: Kyiv, UA. keep-sent-attributes=yes for connection BGP1 is set. If I insert the filter: rejetc; RouterOS announces everything and receives everything. I then upgraded from v6. FAQ; Home. Scenario 3: MikroTik v6 to Cisco Router - BGP filters work correctly. Any ideas? Best Regards, Heino I solved this in ROSv6 by creating an OSPF out-filter on both routers that would not distribute the external IP's route to the other routers. Purpose; Configuration Examples. 49. For example, to filter out routes with a specific BGP community, add this rule: /routing filter add bgp-communities=111:222 chain=bgp-in action=discard Then tell BGP peer Using these settings from a defaulted router running ROS v7. Display posts from previous: (in v6 set-bgp-prepend=3 worked both in input and output filter) It looks like the conversion from v6 to v7 handles this incorrectly. My filter looks like this: Code: Will hear what Mikrotik Support says. 6rc1 BGP session establishes, but I make a change to a filter and want to resend out an update to my peer. Here’s a breakdown of the situation: Scenario 1: MikroTik v7 to Cisco Router (any model) - BGP sessions establish MikroTik. mrz MikroTik Support Posts: 7167 Joined: Wed Feb 07, 2007 11:45 am Location: Latvia. First seeing the BGP in v7 I expected that everything was going to change, but until now that hasn't happened. 2 to v7. We will also just be checkin I have noticed when migrating from v6 filters to v7 filter the prefix length 0-32 does not seem to translate properly. In this setup, I will assume there are two neighboring routers with eBGP. If I want to filter by source ASN, but I have multiple sources, can I put them nothing happens - /file/print does not list any capture file. Has anyone else faced this issue? Could someone point me in the right direction regarding the conversion of V6 route filters to V7. : Sweden. BGP filters from v6 -> v7 high CPU. Quick links. We need a way to get exactly what routes are announced to each bgp peer using ROS v7. 0 255. does Mikrotik Support answer? Top . Good morning everyone, with my AS and a single upstream provider I am advertising my public subnet /24. 0 set ge 9 unset le next edit 4 set prefix 127. Sort by: Best. If I want to filter by source ASN, but I have multiple sources, can I put them in a single instruction like this? Use routing filters. Well, Yes, VLAN Filtering can be enabled on the Bridge used by BGP VPLS, but as the dynamically added VPLS PWs change name, keeping VLAN settings up to date would require scripting. 0/24 that R1 will advertise 2. I work with RouterOS V7. Out-Filter dan In-Filter ini nantinya bisa digunakan pada beberapa fitur One thing I wanted to set up is a basic BGP configuration between two ASes. Post by Nevon » Tue Dec 14, 2021 8:38 pm. 0/24 ) { set bgp-path-prepend Out Filter digunakan untuk menentukan rule routing yang keluar dari router. 11. INPUT - Aplicar Local-Preference; OUTPUT - Aplicar community - Aplicar AS-path Scenario 2: MikroTik v7 to MikroTik - Everything works fine, including BGP filters. 0 set ge 9 unset le next edit 3 set prefix 100. 10. New. 👇Se faz sentido? https://bi It can't hurt to open a ticket at support@mikrotik. Logic is something like this: * BGP packet received * accepted/dropped by input. 1; set gw-check icmp; set bgp-weight 0; set bgp-local-pref 0; set bgp-path-prepend 1; set bgp-med 0; set bgp-communities 0:0; append bgp-communities 0:0; delete bgp-ext-communities rt; set-bgp-prepend-path (AS list;) add specified list of AS numbers to AS_PATH attribute. MIkroTIk has lunched a new router os version. 2/24 invert-match=no action=discard Code: Select all /routing filter # section 1 - Accept what my transit provider advertise me add action=accept chain=MyTransitProvider-IN prefix=0. Add all numbers in num-list, and then use that numlist in a single rule. Routing Filter Notes. 3 and R2 is running ROS 7. Yes mrz, the number of BGP prefixes received is nicely displayed, and there are good tools under /routing/ bgp /advertisements and in /routing/route Overall Winbox needs a bugfix here and there, but on the CLI things are good. Post by wernerptu » Mon Sep 02, 2024 1:18 pm. Hello, I recently switched from a CCR1036 Filter Known Transit Networks in AS Paths. 1. As my long-awaited sequel to my MikroTik RouterOS v7 BGP configuration, I will do a RouterOS v7 configuration, but this time with IPv6. 16. It seems like the issue is specifically with BGP filtering between MikroTik v7 and Cisco. Values of the following properties can be filtered: bgp-communities, bgp-ext-communities, bgp-large-communities delete Delete the value of the specified property. Forwarding Protocols. Apparently MikroTik ignores the filter rules if the default network is being used. Valid only in incoming filters and for BGP routes Is there any available Route Filter conversion from v6 to v7? I am currently running v6 and I want to upgrade to v7 and I need help with converting my current filters on v6 to v7. 0 set ge 9 unset le next edit 5 set prefix 169. 192. Hello, I recently switched from a CCR1036 Hello, Could someone give some guidance regarding the configuration of BGP Confederation, in the new version of routerOs? I took a CCR and updated it to version 7, but it remade the settings but when viewing via winbox, it changed something that I work with RouterOS V7. 3 and cpu usage is 20-30% more than before. D - DYNAMIC; A - ACTIVE; o, y - BGP-MPLS-VPN Columns: DST-ADDRESS, GATEWAY, DISTANCE DST-ADDRESS GATEWAY DISTANCE Could someone point me in the right direction regarding the conversion of V6 route filters to V7. Quote #3; Sat Nov 16, 2024 1:47 am. 255. Has anyone else faced this issue? Exemplo sessão BGP RouterOS v7. Post by wintech2003 » Mon Jun 05, 2023 6:08 pm. I’ve tried various methods, but nothing seems to resolve the problem. I have always rejected FIRT as there was no point in managing it. Neste exemplo estaremos tratando sobre os seguintes assuntos: Configurar Filtro BGP. Problem is of course that a filter cannot know if it is input or output filter, and in v6 it could be both. 2/24 invert-match=no action=accept chain= bgp-out-v4 prefix=!2. Through the upgrade process this is not automatically done and requires me to rebuild my full rule set. Community discussions. However, the only actions that converted were: set distance 1; set scope 0; set scope-target 0; set pref-src 1. 0. what can only be done in select-rule, since the BGP rules support jump and if. 0 set ge 11 unset le next edit 2 set prefix 10. While I’m not a professional network engineer at the time of writing, lately I’ve been playing with MikroTik’s CHR in EVE-NG. 0/0 add action=accept chain=MyTransitProvider-IN prefix=::/0 # section 2 - Accept what my transit customer advertise me add action=accept chain=MyTransitCustomer-IN match-chain=MyTransitCustomerAS set I'm looking to migrate it to ROS v7, but I'm having trouble with the new route filter methodology and honestly the documentation is lacking. The configuration seems to be correct, and BGP sessions are established, but the BGP filters are not functioning as expected. Is anyone going through this? Use routing filters. Member Candidate. 3. Best. 2/24 invert-match=no action=accept chain=bgp-out-v4 prefix=!2. g. accept-* properties). If I want to filter by source ASN, but I have multiple sources, can I put them (Rx - Mikrotik router, BGPx - ebgp connection name): R1 --- BGP1 ---- R2 --- BGP2 ---- R3 R1 and R3 are running ROS 6. I’ve left the filters out of this example though becuase I am working on a Quick Refrence Guide for the new syntax, Since BGP is not able to choose between syncronization modes at the moment, its inportant that the route being advertised is an active route in the routing table. set-bgp-weight (signed integer;) set BGP weight property to be used in BGP route selection process. 2/24 invert-match=no action Scenario 2: MikroTik v7 to MikroTik - Everything works fine, including BGP filters. I don't want to disable the static route because it will disrupt service, but theoretically, it should not need to be disabled for the BGP default route to work. In ROS v6, I've got a series of filters that distribute via BGP both whitelists and blacklists based on matching route comments in the blacklist router: MikroTik Support Posts: 7172 Joined: Wed Feb MikroTik. Post by joi » Wed Jun 05, 2024 3:43 am. 254. Top . If I swap their order, the In this case, I was dealing with converted-from-v6 filters, and forgot about "bgp-network" the attribute (not to be confused with "bgp-networks" the address list). 5. Forwarding Protocols Joined: Wed Jun 05, 2024 3:38 am. https://mynetworktraining. On R2 output. 0/0 set-bgp-communities="" set-bgp-local-pref=110 set-route-targets=000000:110 MikroTik Support Posts: 7026 Joined: Wed Feb 07, 2007 11: MikroTik. Scenario 2: MikroTik v7 to MikroTik - Everything works fine, including BGP filters. RouterOS. /routing filter add chain=GENERIC_PREFIX_LIST bgp-as-path="_0_" protocol=bgp action=discard comment="RFC 7607" /routing filter add chain=GENERIC_PREFIX_LIST bgp-as-path="_23456_" protocol let me explain the issue i am having i made a copy of my current configs and installed them in to a CHR image. Share Add a Comment. oreggin. How can I convert the following below chain=bgp-out-v4 prefix=2. RouterOS v6; RouterOS v7; Huawei VRP; Arista; Mikrotik will take a very very long time to process all those routes and has some issues with BGP. rif file and config export as well. The above is with one transit (default route only) and one IXP; traffic levels are 200-300Mbps. Hal ini untuk memudahkan perubahan Since it is a direct output of the data that is sent to the remote peer, then currently data is shown grouped the same way as it is grouped in NLRIs when sent out. Has anyone else faced this issue? Re: BGP V7 aggregation How to Post by armandfumal » Wed Mar 23, 2022 8:52 pm Dude2048 wrote: ↑ Mon Mar 21, 2022 12:36 pm You have to create a blackhole route in your routing table. accept config (configured in bgp template or connection) Hey guys, in this video we will be discussing BGP Attributes and how we can change some of these attributes using Route Filters. Hi, I have a question about BGP filters in V7. Well, is v7 support filter as-path using regex ? since yesterday i'm trying to input some rule like in v6 this routing filter work flawlessly on v6 chain=peer1-in bgp-as-path=65530$ invert-match=no action=discard tried delete bgp-communities all and filter bgp-communities all, neither worked. Disabled the BGP connection, waited 30 seconds, enabled the BGP connection. Assuming you are doing two bgp feeds on a single router, you may use WEIGHT attribute. Has anyone else faced this issue?. In-Filter digunakan untuk menentukan rule routing yang masuk ke router. If I want to filter by source ASN, but I have multiple sources, can I put them I am running two BGP sessions on my Rb3011 with v7. Any ideas? Best Regards, Heino #ebgp #mikrotik #bgp_routingBGP (Border Gateway Protocol) adalah salah satu jenis protokol routing yang berfungsi untuk mempertukarkan informasi antar Autono Mikrotik. Has anyone else faced this issue? BGP Filter Issue Between MikroTik v7 and Cisco Routers Search Search What is the CPU architecture and RouterOS release you use? On my lab CHRs running 6. ZillnerIT. just joined. Here is the example setup (Using private IPs just for example purposes) BGP Peer1 (172. Convert BGP filter from V6 to V7. From ~20% without this filter to 60-80%. Skip to content. MikroTik RouterOS – v7. Hi Since ros v7. Has anyone else faced this issue? MikroTik. Open comment sort options. V7 bgp peer in_filter and out filter config? Post by edwinlai33 » Thu Nov 12, 2020 5:05 am. 0/24 ) { set bgp-local-pref 200; accept add chain=BGP_Out disabled=no rule=" if ( dst==123. Has anyone else faced this issue? In this case, I was dealing with converted-from-v6 filters, and forgot about "bgp-network" the attribute (not to be confused with "bgp-networks" the address list). Probably what we will see before that is some kind of auto-complete Guidance on BGP Filtering. I was reminded of it when I looked at one of my hand-crafted v7 filters from another project, so I apologize for the parts of this thread that are moot due to that. Hello, I recently switched from a CCR1036 Scenario 2: MikroTik v7 to MikroTik - Everything works fine, including BGP filters. RouterOS v7 MikroTik. Where MikroTik has changed a lot in Routing, Filter, etc. just joined Posts: 5 Joined: Wed Nov 23, 2022 8:22 pm. I can't see MikroTik resurrecting the v6 routing filter format at all. The BGP session is reestablished with the same results, invalid (DIFb). 2 posts • Page 1 of 1. 1)->border router eth2 -> border router eth3 ->core Code: Select all /routing filter # section 1 - Accept what my transit provider advertise me add action=accept chain=MyTransitProvider-IN prefix=0. Well, This is what they looked like after the upgrade to v7. Re: Route filter for BGP not working v7. 2. 48. I understand there are many things to cover in 7. Has anyone else faced this issue? Yes, VLAN Filtering can be enabled on the Bridge used by BGP VPLS, but as the dynamically added VPLS PWs change name, keeping VLAN settings up to date would require scripting. That would be counter productive and Code: Select all set routing-options autonomous-system xxxxx set protocols bgp graceful-restart long-lived receiver disable set protocols bgp group apb-internal_v4 type internal set protocols bgp group apb-internal_v4 family inet any set protocols bgp group apb-internal_v4 family inet-vpn any set protocols bgp group apb-internal_v4 family inet6-vpn any set protocols MikroTik Support Posts: 7111 Joined: Wed Feb 07, 2007 11:45 am Location: Latvia. I am attaching a supout. Is anyone going through this? mrz wrote: ↑ Mon Jan 16, 2023 11:21 am bgp-as-path-slow-legacy has the same syntax as regexps in ROSv6, so the same regexp should work in ROSv7. Posts: 4 Joined: Sat Oct 26, 2024 1:47 pm. One thing I wanted to set up is a basic BGP configuration between two ASes. 0/0 add action=accept chain=MyTransitProvider-IN prefix=::/0 # section 2 - Accept what my transit customer advertise me add action=accept chain=MyTransitCustomer-IN match-chain=MyTransitCustomerAS set MikroTik. Hello, I recently switched from a CCR1036 is v7 support filter as-path using regex ? since yesterday i'm trying to input some rule like in v6 this routing filter work flawlessly on v6 chain=peer1-in bgp-as-path=65530$ invert-match=no action=discard I work with RouterOS V7. My connection is iBGP with an ISP. 2 everything went good except one major issue. If I want to filter by source ASN, but I have multiple sources, can I put them I then cautiously migrated BGP sessions to V7, and at some point had a fully mixed ROS V6 / V7 network, without issues. 0/24 to another router every time. If I want to filter by source ASN, but I have multiple sources, can I put them Think of it like this, what if we start to flap BGP sessions just because the received prefix after RPKI validation is considered invalid. If I want to filter by source ASN, but I have multiple sources, can I put them BGP-Networking. network=""? This was a drawback with BGP in the past that made the Mikrotik's not so prime-time for those wanting full route feeds. Instead, proper filtering should be used. Yes, VLAN Filtering can be enabled on the Bridge used by BGP VPLS, but as the dynamically added VPLS PWs change name, keeping VLAN settings up to date would require scripting. If I want to filter by source ASN, but I have multiple sources, can I put them in a single instruction like this? It is important to remember that a filter chain that ends without accepting everything is working OK in v6 because there is an implicit accept at the end of the filter chain, but in v7 there is an implicit reject at the end of the chain so when you are not explicitly accepting everything you want to accept the filter will fail in v7. With IPV4 I don't have this problem. This is what they looked like after the upgrade to v7. v7: BGP - dump-saved Code: Select all /routing filter # section 1 - Accept what my transit provider advertise me add action=accept chain=MyTransitProvider-IN prefix=0. I'm not sure what is not covered by the V7 BGP filter language e. RouterOS v6: Na versão 6 você consegue informar os prefixos originados por seu ASN através do caminho Routing > BGP > Networks RouterOS v7: Já na versão 7 para informar os prefixos que serão originados por seu ASN, é necessário criar uma address list, contendo a respectiva quebra do ASN, segue o caminho: IP > Firewall > Address Lists. If I want to filter by source ASN, but I have multiple sources, can I put them Testing out BGP on a CCR2217 v7. RouterOS v7 has a very good option to filter incoming NLRIs, before they get processed (see input. Posts: 201 (in v6 set-bgp-prepend=3 worked both in input and output filter) It looks like the conversion from v6 to v7 handles this incorrectly. BGP V7 filter question. 15. Earlier it would be just 10% with occasional spikes to 25% max but now it is 56%+ all time. 1 beta 6 Post by mducharme » Fri May 21, 2021 6:54 pm I haven't done much with the new routing filters, but could the issue have to do with output. 1 chain=cymru-in tried delete bgp-communities all and filter bgp-communities all, neither worked. I want to Filter / reject some as-paths. The setup will have: I will not be doing Hi, I have a question about BGP filters in V7. This Since it is a direct output of the data that is sent to the remote peer, then currently data is shown grouped the same way as it is grouped in NLRIs when sent out. the one used for BGP VPLS, with VLAN filtering off) to an other bridge (that has VLAN filtering on). If I want to filter by source ASN, but I have multiple sources, can I put them Please report all issues with RouterOS beta / rc pre-release versions. On the other peer, the first in-filter rule discards on bgp-community=0:54321, the second rule discards on bgp-community=0:12345, and the second rule works (which is expected). Is anyone going through this? Is there any available Route Filter conversion from v6 to v7? I am currently running v6 and I want to upgrade to v7 and I need help with converting my current filters on v6 to v7. BGP filter communities are not working as they did before some just send all routes others do not set the community strings at all. 123. I would love to have some help to convert filters from V6 to V7 Transit filters eBGP: Incoming filter: Outgoing filter: add action=accept chain=bgp-ipv4 Hello, Could someone give some guidance regarding the configuration of BGP Confederation, in the new version of routerOs? I took a CCR and updated it to version 7, but it remade the settings but when viewing via winbox, it changed something that MikroTik. 6, I am adding bgp-community 0:12345 using an out-filter on one peer. The setup will have: R1 with AS1 and R2 with AS2 1. Re: bgp filter problem. Hopefully it will help further the conversation on changes in the syntax to make it easier to work with. 10) /routing bgp instance set default out-filter=bgp-out redistribute-static=yes You have to create a blackhole route in your routing table. Unfortunately it is not possible to add a bridge (e. My filter looks like this: Code: Select all. 1 I can get a BGP session up and running, pulling routes and sending 10. If I want to filter by source ASN, but I have multiple sources, can I put them I am working on converting a v6 BGP setup to a new router running V7 and have a question on the advertisements. The setup will have: R1 with AS1 and R2 with AS2 1::/64 that R1 will advertise 2::/64 that R2 will advertise 3::/64 for the point-to-point link between R1 and R2 3::1 for R1 and 3::2 for R2 The ether1 interface for the R1 and R2 point-to-point links The Welcome to our in-depth YouTube tutorial on configuring BGP peering and mastering local preference manipulation on MikroTik RouterOS 7! If you're looking to mrz wrote: ↑ Mon Jan 16, 2023 11:21 am bgp-as-path-slow-legacy has the same syntax as regexps in ROSv6, so the same regexp should work in ROSv7. com about the poor docs on BGP's select-rule. The default action of the routing filter chain is "drop" in v7. Post by maaathieu » Wed Apr 06, 2022 11:24 am. Top. Hi , Anyone how are you ? Today I have a question about Mikrotik OS7 v 7. If I start/stop BGP2 on R3 all changes are propagated to R1 (to verify that bgp is working). 1)->border router eth1 -> border router eth3 -> core router eth1 BGP Peer2 (172. hoqvqeo mvlk uivjh rddweq wkgrcx ssan qcssjmz yhvnbfq tnwbq wkgce