RE: vpn6-mpls routes on BIRD 2
Hi , From your protocols info, “BGP Next hop: ::” in channel vpn6-mpls, if next hop is empty, the route is withdrawn. Suggest to check it. Best Regards, Arvin Gan From: Bird-users On Behalf Of Chris Herdt Sent: Friday, August 24, 2018 5:48 AM To: bird-users@network.cz Subject: vpn6-mpls routes on BIRD 2 Thanks to the list for all the help you've given me so far! Another question: I am running BIRD 2.0.2 and peering with a host that is announcing vpn4 mpls and vpn6 mpls routes. The vpn4 mpls routes are working, but all of the vpn6 mpls routes appear as withdrawn routes. I'm not sure why -- I looked at the packet capture in Wireshark and the UPDATE messages containing the IPv6 routes all show zero for Withdrawn Routes Length. Any ideas? Here's the result of 'show protocols all peer1' (addresses changed): bird> show protocols all peer1 Name Proto Table State Since Info peer1 BGP---up 14:35:04.353 Established BGP state: Established Neighbor address: 192.168.42.1 Neighbor AS: 65321 Neighbor ID: 192.168.42.1 Local capabilities Multiprotocol AF announced: vpn4-mpls vpn6-mpls Route refresh Graceful restart 4-octet AS numbers Enhanced refresh Neighbor capabilities Multiprotocol AF announced: vpn4-mpls vpn6-mpls Route refresh Extended next hop IPv6 nexthop: ipv4 ipv4-mc Graceful restart Restart time: 120 AF supported: vpn4-mpls vpn6-mpls AF preserved: 4-octet AS numbers Session: internal multihop AS4 Source address: 192.168.100.1 Hold timer: 12.954/15 Keepalive timer: 0.005/5 Channel vpn4-mpls State: UP Table: vpntab4 Preference: 100 Input filter: ACCEPT Output filter: REJECT Routes: 9771 imported, 0 exported Route change stats: received rejected filteredignored accepted Import updates: 9771 0 0 0 9771 Import withdraws: 20 0--- 20 0 Export updates: 9771 9771 0--- 0 Export withdraws:0--------- 0 BGP Next hop: 192.168.100.1 IGP IPv4 table: master4 Channel vpn6-mpls State: UP Table: vpntab6 Preference: 100 Input filter: ACCEPT Output filter: REJECT Routes: 0 imported, 0 exported Route change stats: received rejected filteredignored accepted Import updates: 0 0 0 0 0 Import withdraws: 2785 0--- 2785 0 Export updates: 0 0 0--- 0 Export withdraws:0--------- 0 BGP Next hop: :: IGP IPv6 table: master6 -- Chris Herdt https://osric.com/chris/
vpn6-mpls routes on BIRD 2
Thanks to the list for all the help you've given me so far! Another question: I am running BIRD 2.0.2 and peering with a host that is announcing vpn4 mpls and vpn6 mpls routes. The vpn4 mpls routes are working, but all of the vpn6 mpls routes appear as withdrawn routes. I'm not sure why -- I looked at the packet capture in Wireshark and the UPDATE messages containing the IPv6 routes all show zero for Withdrawn Routes Length. Any ideas? Here's the result of 'show protocols all peer1' (addresses changed): bird> show protocols all peer1 Name Proto Table State Since Info peer1 BGP---up 14:35:04.353 Established BGP state: Established Neighbor address: 192.168.42.1 Neighbor AS: 65321 Neighbor ID: 192.168.42.1 Local capabilities Multiprotocol AF announced: vpn4-mpls vpn6-mpls Route refresh Graceful restart 4-octet AS numbers Enhanced refresh Neighbor capabilities Multiprotocol AF announced: vpn4-mpls vpn6-mpls Route refresh Extended next hop IPv6 nexthop: ipv4 ipv4-mc Graceful restart Restart time: 120 AF supported: vpn4-mpls vpn6-mpls AF preserved: 4-octet AS numbers Session: internal multihop AS4 Source address: 192.168.100.1 Hold timer: 12.954/15 Keepalive timer: 0.005/5 Channel vpn4-mpls State: UP Table: vpntab4 Preference: 100 Input filter: ACCEPT Output filter: REJECT Routes: 9771 imported, 0 exported Route change stats: received rejected filteredignored accepted Import updates: 9771 0 0 0 9771 Import withdraws: 20 0--- 20 0 Export updates: 9771 9771 0 --- 0 Export withdraws:0------ --- 0 BGP Next hop: 192.168.100.1 IGP IPv4 table: master4 Channel vpn6-mpls State: UP Table: vpntab6 Preference: 100 Input filter: ACCEPT Output filter: REJECT Routes: 0 imported, 0 exported Route change stats: received rejected filteredignored accepted Import updates: 0 0 0 0 0 Import withdraws: 2785 0--- 2785 0 Export updates: 0 0 0 --- 0 Export withdraws:0------ --- 0 BGP Next hop: :: IGP IPv6 table: master6 -- Chris Herdt https://osric.com/chris/
Re: Help with multiple routing tables.
On 08/23/2018 04:42 AM, Ondrej Zajicek wrote: Hi Hi Ondrej, You can do it that way, or you can have just two tables, one for main_rib+RIP and another for default_rib, connect them with pipe that allows export in the direction from default to main but not in the other one, and have export filter for kernel protocol attached to main_rib (254) configurured to accept everything EXCEPT the default route. Thank you for your reply. Do you, or any other BIRD users, have any guidance / ProTips to suggest which method might be better long term? Does one method (two tables vs three tables) potentially run into more problems or otherwise paint me into a corner down the road? -- Grant. . . . unix || die smime.p7s Description: S/MIME Cryptographic Signature
Re: show route command syntax
On Wed, Aug 22, 2018 at 4:33 PM Maria Jan Matějka wrote: > On August 22, 2018 8:40:16 PM GMT+02:00, Chris Herdt > wrote: > > I'm using BIRD v2.0.2. I have successfully peered with another host > > and am > > receiving iBGP routes. > > > > bird> show route count > > 0 of 0 routes for 0 networks in table master4 > > 0 of 0 routes for 0 networks in table master6 > > 9763 of 9763 routes for 9763 networks in table vpntab4 > > 0 of 0 routes for 0 networks in table vpntab6 > > Total: 9763 of 9763 routes for 9763 networks in 4 tables > > > > I can use 'show route all' to see all the routes (IP addresses > > replaced): > > > > bird> show route all > > Table vpntab4: > > 192.168.100.0:24 192.168.42.199/32 unreachable [peer1 13:22:47.245 > > from > > 192.168.12.3] * (100/-) [AS65321i] > > Type: BGP univ > > BGP.origin: IGP > > BGP.as_path: 65321 > > BGP.next_hop: 192.168.100.0 > > BGP.local_pref: 100 > > BGP.originator_id: 192.168.100.0 > > BGP.cluster_list: 192.168.12.3 192.168.100.1 > > BGP.ext_community: (rt, 65123, 6) > > BGP.mpls_label_stack: 54321 > > etc. > > > > However, I can't seem to figure out the syntax to retrieve a specific > > route. E.g.: > > > > bird> show route for 192.168.42.199/32 > > Network not found > > > > Thanks in advance. > > Hello! > > You are using a vpn4 table so you should ask for a vpn4 prefix, like > > show route for 192.168.100.0:24 192.168.42.99/32 > > I'm writing from my phone, not testing it. Anyway, it should work. > > Maria > That worked! Thanks for your help! -- Chris Herdt https://osric.com/chris/
Re: Help with multiple routing tables.
On Wed, Aug 22, 2018 at 05:25:33PM -0600, Grant Taylor wrote: > One for each kernel routing table (253 & 254) and the view that RIP has. > > I think that I will need to import from the default_rib (253) into RIP -and- > filter said default from RIP so that it doesn't get into the main_rib (254). > > Or am I going to need a 3rd table inside of BIRD which does the following: > > - Imports all from main_rib (254) > - Exports all to main_rib (254) EXCEPT the default. > - Imports all from default_rib (253) > - Exports none to default_rib (253) Hi You can do it that way, or you can have just two tables, one for main_rib+RIP and another for default_rib, connect them with pipe that allows export in the direction from default to main but not in the other one, and have export filter for kernel protocol attached to main_rib (254) configurured to accept everything EXCEPT the default route. -- Elen sila lumenn' omentielvo Ondrej 'Santiago' Zajicek (email: santi...@crfreenet.org) OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net) "To err is human -- to blame it on a computer is even more so."
