February 2018 - frog - lists.frrouting.org

received-routes.. doesn't work?
by Mark Kamichoff 01 Sep '18

01 Sep '18

Hi - I'm running various 3.1-dev versions of FRR and noticed that the "show ip bgp nei <peer> received-routes" doesn't seem to work as expected on any of them. Here's an example of the relevant parts of the configuration: ! router bgp 395460 neighbor 169.254.169.254 remote-as 64515 neighbor 169.254.169.254 password <snip> neighbor 169.254.169.254 ebgp-multihop 2 address-family ipv4 unicast neighbor 169.254.169.254 soft-reconfiguration inbound neighbor 169.254.169.254 route-map DENY_ALL in neighbor 169.254.169.254 route-map DENY_ALL out exit-address-family ! route-map DENY_ALL deny 65535 ! orca# show ip bgp neighbors 169.254.169.254 routes orca# show ip bgp neighbors 169.254.169.254 received-routes BGP table version is 0, local router ID is 10.3.4.36 Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, i internal, r RIB-failure, S Stale, R Removed Origin codes: i - IGP, e - EGP, ? - incomplete Network Next Hop Metric LocPrf Weight Path orca# >From tcpdump and other t-shooting I know that there is an IPv4 DFZ being received, but received-routes doesn't show any of the routes that should be in the adj-rib-in. Oddly, if I remove the inbound route-map I see expected prefixes using the "routes" /and/ "received-routes" command. If I put it back, the "received-routes" shows nothing once again. It would almost seem like soft-reconfiguration isn't really enabled, but received-routes should give me an error if it wasn't and the neighbor information confirms that it is: orca# show ip bgp neighbors 169.254.169.254 <snip> For address family: IPv4 Unicast Update group 5, subgroup 5 Packet Queue length 0 Inbound soft reconfiguration allowed <----- <snip> This isn't limited to the IPv4 AF, either. I've got IPv6 peers that echibit the same behavior. Have I found a bug or am I doing something wrong? I'm happy to file a bug report. More info., if it helps: orca# show version FRRouting 3.1-dev (). Copyright 1996-2005 Kunihiro Ishiguro, et al. configured with: '--build=x86_64-linux-gnu' '--prefix=/usr' '--includedir=${prefix}/include' '--mandir=${prefix}/share/man' '--infodir=${prefix}/share/info' '--sysconfdir=/etc' '--localstatedir=/var' '--disable-silent-rules' '--libexecdir=${prefix}/lib/frr' '--disable-maintainer-mode' '--disable-dependency-tracking' '--enable-exampledir=/usr/share/doc/frr/examples/' '--localstatedir=/var/run/frr' '--sbindir=/usr/lib/frr' '--sysconfdir=/etc/frr' '--enable-ospfapi=yes' '--enable-vtysh=yes' '--enable-isisd=yes' '--enable-multipath=256' '--enable-user=frr' '--enable-group=frr' '--enable-vty-group=frrvty' '--enable-configfile-mask=0640' '--enable-logfile-mask=0640' '--enable-werror' '--enable-gcc-rdynamic' '--with-libpam' '--enable-systemd=yes' '--enable-poll=yes' '--enable-cumulus=yes' '--enable-pimd=yes' '--enable-dependency-tracking' '--enable-bgp-vnc=no' 'build_alias=x86_64-linux-gnu' orca# (orca:20:08:PDT)% uname -a Linux orca 4.9.0-3-amd64 #1 SMP Debian 4.9.25-1 (2017-05-02) x86_64 GNU/Linux (the build is from August 26th) Thanks! - Mark -- Mark Kamichoff prox(a)prolixium.com https://www.prolixium.com/

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How to configure RFC 4364 (BGP/MPLS) VPNs with FRR/bgpd
by SHAIKH, AMAN (AMAN) 02 Mar '18

02 Mar '18

Hi How do I configure FRR/bgpd to support RFC 4364 (BGP/MPLS) L3-VPNs? Specifically, I'd like to know how to configure following things: - One or more VRFs along with its import and export route targets as well as route-distinguisher. o Specifying one or more neighbors (eBGP sessions) in this VRF with IPv4(|6) address family. - One or more iBGP sessions with route-reflectors and other routers supporting VPNv4(|6) address family. thx aman

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Adding BGP/MPLS VPNv4 route to Zebra
by SHAIKH, AMAN (AMAN) 27 Feb '18

27 Feb '18

Hi I am trying to use FRR/Zebra BGP/MPLS L3-VPN. To make this work, I need to install route in Linux kernel via Zebra at the ingress LSR/PE. Let me explain through an example. Let's assume the ingress LSR receives following route from the egress LSR/PE: VPNv4 NLRI = { RD = 1:100, prefix = 10.0.0.0/24, label = 100 }, next-hop = 192.168.0.2 Let's also assume this ingress PE has following route to egress next-hop of 192.168.0.2: IPv4 prefix = 192.168.0.2/32 push label = 20 next-hop = 10.1.100.2 where 10.1.100.2 is the IP address of the adjacency core LSR. What's the best way of adding the route for the VPNv4 NLRI to Zebra? thx aman

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Multicast Trace added to PIM
by Donald Sharp 22 Feb '18

22 Feb '18

All - I'd like to thank Mladen for his contribution of a multicast trace program to FRR. This is a implementation of draft https://tools.ietf.org/html/draft-ietf-idmr-traceroute-ipm-05 . The command can be run from inside of vtysh with `mtrace <source>`. Alternatively it can be invoked from the command line as `mtracebis <source>`. thanks! donald

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Problems setting default-information originate
by Timo 19 Feb '18

19 Feb '18

Hi, I'm evaluating FRR; I got the most recent RPM from [0], and installed it on an up-to-date CentOS 7 machine (that was running Quagga 1.2.x before where that command worked). I want to redistribute some stuff into OSPF: funnyhostname(config-router)# default-information originate metric 90 metric-type 1 % Unknown command. Even the documentation says the command is valid and existing [1]. Any hints? Regards Timo [0] – https://github.com/FRRouting/frr/releases [1] – https://frrouting.org/user-guide/Redistribute-routes-to-OSPF.html#Redistrib…

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Reg support for VRF configuration in BGP
by Ashvin Lakshmikantha 13 Feb '18

13 Feb '18

Hi all, I am new to the FRR community. I was able to download the software and install it in a VM to play with it. I am currently using the stable 3.0-3 build. My interest is in BGP VPN (RFC 4364). I could not figure out how to configure VPNs and exchange prefixes between two peers. However, there are display commands to display VPN routes. Is BGP VPN configuration supported in the stable 3.0-3 build? If yes, I would appreciate if someone could provide a pointer on configuring it from the vtysh shell. Thanks, Ashvin

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VRF Configuration
by Donald Sharp 10 Feb '18

10 Feb '18

All - Since properly configuring a VRF has become a point of contention, I've started a wiki on how to properly configure VRF's so that you can use them properly with FRRouting: https://github.com/FRRouting/frr/wiki/Configuring-a-VRF-to-work-properly-fo… thanks! donald

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Experimental OSPF SR
by Donald Sharp 07 Feb '18

07 Feb '18

All - We have added Experimental support of OSPF SR (draft-ietf-ospf-segment-routing-extensions-24). I would like to thanks Olivier for his hard work in getting this work done and Renato taking the time to fully review and test this feature. This feature is available on the master branch. For Instructions on how to use this new feature, please consult doc/OSPF-SR.rst. Thanks! donald

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Sigment Routing
by Алексей Болдырев 07 Feb '18

07 Feb '18

А почему бы не реализовать поддержку sigment routing в BGP?

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