So ideal way to manage that on non-commit based devices would be to maintain a list of prefixes separately in the plain text file or a database and diff it against old one & only push for changes.
MIKROTIK ROUTING UPDATE
If one does no ip prefix list before triggering update it will cause a major noticeable impact. I would prefer that for non-commit based platforms since with Cisco ios or Mikrotik routeros it can be tricky to auto update prefix list. Also, IRRPR offers diff management via CVS (I hope they come up with git on that part) and it comes with an option to trigger email update so Network admins can know when to manually update. One can use a script like this for connecting to smaller networks.
MIKROTIK ROUTING MANUAL
Automated filtering where filters are generated regularly makes sense but manual filtering without automation can be damaging. I would not recommend using it for manual filtering of any larger network. The config between ***start*** and ***end*** can be pasted directly in CLI with Mikrotik. Routing filter add chain=NPCI-IPv6 action=reject Routing filter add chain=NPCI-IPv6 prefix=2001:df0:2f0::/46 prefix-length=46-48 action=accept Routing filter add chain=NPCI-IPv4 action=reject Routing filter add chain=NPCI-IPv4 prefix=103.14.160.0/22 prefix-length=22-24 action=accept Importing /home/anurag/irrpt/db/132351.6.agg version 1.1 Importing /home/anurag/irrpt/db/132351.4.agg version 1.1 Importing /home/anurag/irrpt/db/132351.agg version 1.1 Importing /home/anurag/irrpt/db/132351.6 version 1.1 Importing /home/anurag/irrpt/db/132351.4 version 1.1 Importing /home/anurag/irrpt/db/132351 version 1.1 ***End of Mikrotik routeros another example of it in action with NPCI’s AS132351. Routing filter add chain=Cloudaccess-IPv6 action=reject Routing filter add chain=Cloudaccess-IPv4 action=reject Routing filter add chain=Cloudaccess-IPv4 prefix=199.116.76.0/22 prefix-length=22-24 action=accept ***Start of Mikrotik routeros config below*** So the script works except with a small bug in IPv6 aggregation which is the issue with IRRPT and I have reported same on their GitHub project page here.Īn example of the script in progress for Cloudaccess AS54456. # Prefix is greater than /48 - generating config with prefix length upto /48Įcho "routing filter add chain=$1-IPv6 prefix=$prefi圆 prefix-length=$masklength6-48 action=accept"Įcho "routing filter add chain=$1-IPv6 action=reject"Įcho "***End of Mikrotik routeros config***" # Prefix is a /48 - generating config without defining prefix lengthĮcho "routing filter add chain=$1-IPv6 prefix=$prefi圆 action=accept" Replace: policy-statement CUSTOMER:54456 '` cat cat offers a nice interface for generation of config for Cisco, Juniper, Extreme, Foundry and Force10. Importing /home/anurag/irrpt/db/54456.6.agg version 1.1Ĭompleted processing of 1 IRR now we have got prefixes and this includes both basic route objects as well as aggregates. Importing /home/anurag/irrpt/db/54456.4.agg version 1.1 Importing /home/anurag/irrpt/db/54456.agg version 1.1 Importing /home/anurag/irrpt/db/54456.6 version 1.1
Importing /home/anurag/irrpt/db/54456.4 version 1.1 Importing /home/anurag/irrpt/db/54456 version 1.1 So, for instance, let’s pick AS54456: bin/irrpt_fetch 54456 Once IRR Power Tools (IRRPT) is setup, it allows us to fetch prefixes based via Internet Routing Registries and also aggregates them.
I tried building around bgpq3 but it seems more easy with another popular tool in the domain called IRR Power Tools.
One can use such logic with some kind of remote login mechanism like rancid (look for mtlogin here). So this blog post is about ways for generating filter config for a given ASN via IRR. Since Mikrotik’s CCRs are getting quite popular across small to mid-sized ISPs. I have received a number of emails in last few months about automated filter generation for Mikrotik routeros. Something like that.A while back I posted about routing filter generation via bgpq3 for Cisco (ios and XR) and Juniper JunOS based routers. ip firewall mangle add chain=prerouting src-address=192.168.12.0/24 action=mark-routing new-routing-mark=r_172 ip firewall mangle add chain=prerouting src-address=192.168.11.0/24 action=mark-routing new-routing-mark=r_172 ip firewall mangle add chain=prerouting src-address=192.168.10.0/24 action=mark-routing new-routing-mark=r_178 ip firewall mangle add chain=prerouting src-address=198.54.15.0/24 action=mark-routing new-routing-mark=r_178
MIKROTIK ROUTING HOW TO
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