having trouble getting default to be added to route table, says filtered out

[Jerry Scharf]

Hi,

I did a quick look at the archives and didn't see exactly what I was
trying discussed.

I have some border machines running bird connected to junpiers that are
bgp peering with our ISPS. I have the junipers set up such that they
generate a default route and send it to the border machines. I want the
border machines to put it in the system routing table and then pass that
on to the inside systems. Everyone is speaking bgp, one AS for the
outside and one for the inside.
I am running 1.4.5 (centos 7 release)
here are the parts of the config that are involved:

filter load_default {
    if net = [0.0.0.0/0] then accept;
    else reject;
}

template bgp toedge {
    description "bgp to edge/ISP as";
    local as 65401;
    direct;
    export filter outside_only;
    import filter load_default;
    allow local as;
    bfd on;
    source address 172.18.2.10;
}

protocol bgp edgeA from toedge {
    neighbor 172.18.2.1 as 65401;
    debug all;
}

protocol bgp edgeB from toedge {
    neighbor 172.18.2.2 as 65401;
}


here's the debug output:
2016-12-30 11:28:53 <INFO> Started
2016-12-30 11:28:53 <TRACE> edgeA: Started
2016-12-30 11:28:53 <TRACE> edgeA: Connect delayed by 5 seconds
2016-12-30 11:28:57 <TRACE> edgeA: Connecting to 172.18.2.1 from local
address 172.18.2.10
2016-12-30 11:28:57 <TRACE> edgeA: Connected
2016-12-30 11:28:57 <TRACE> edgeA: Sending
OPEN(ver=4,as=65401,hold=240,id=01020304)
2016-12-30 11:28:57 <TRACE> edgeA: Got
OPEN(as=65401,hold=90,id=ac120001)
2016-12-30 11:28:57 <TRACE> edgeA: Sending KEEPALIVE
2016-12-30 11:28:57 <TRACE> edgeA: Got KEEPALIVE
2016-12-30 11:28:57 <TRACE> edgeA: BGP session established
2016-12-30 11:28:57 <TRACE> edgeA: Connected to table master
2016-12-30 11:28:57 <TRACE> edgeA: State changed to feed
2016-12-30 11:28:57 <TRACE> edgeA < added 198.48.100.20/32 dev lo
2016-12-30 11:28:57 <TRACE> edgeA < added 198.48.100.21/32 dev lo
2016-12-30 11:28:57 <TRACE> edgeA < added 8.25.217.22/32 dev lo
2016-12-30 11:28:57 <TRACE> edgeA: State changed to up
2016-12-30 11:28:57 <TRACE> edgeA: Sending UPDATE
2016-12-30 11:28:57 <TRACE> edgeA: Sending End-of-RIB
2016-12-30 11:28:57 <TRACE> edgeA < filtered out 10.200.32.0/28 via
10.200.0.3 on eth4
2016-12-30 11:28:57 <TRACE> edgeA < filtered out 10.200.0.1/32 via
10.200.0.3 on eth4
2016-12-30 11:28:57 <TRACE> edgeA < filtered out 10.200.16.1/32 via
10.200.0.3 on eth4
2016-12-30 11:28:57 <TRACE> edgeA: Got KEEPALIVE
2016-12-30 11:28:57 <TRACE> edgeA: Got UPDATE
2016-12-30 11:28:57 <TRACE> edgeA: Got End-of-RIB
2016-12-30 11:28:57 <TRACE> edgeA: Got UPDATE
2016-12-30 11:28:57 <TRACE> edgeA > filtered out 0.0.0.0/0 via
172.18.2.1 on eth1
2016-12-30 11:28:58 <TRACE> edgeA < filtered out 10.200.16.1/32 via
10.200.16.3 on eth5

As you can see (second line from the bottom of the debug), it got the
default advertisement from the peer and bird says it filtered it out
(the other filters are correct.) I set allow-local-as for the peer and
have a filter that is supposed to match and accept exactly the route
that says was filtered.

what am I doing wrong?


BTW, I am also having trouble with setting localpref in a filter. here's
the config pieces:

function is_primary() {
    return net = [198.48.100.10/32, 198.48.100.20/32];
}

function is_secondary() {
    return net = [8.25.217.10/32, 8.25.217.21/32];
}

function is_tertiary() {
    return net ~ [198.48.100.0/24+, 8.25.217.0/24+];
}

filter outside_only {
    if is_primary() then bgp_local_pref=100;
    else if is_secondary() then bgp_local_pref=80;
    else if is_tertiary() then bgp_local_pref=60;
    if net_outside() then accept;
    else reject;
}

They all end up on the junipers with locappref of 60. How do I do this
right?

thanks in advance,
jerry