[FROG] FRR 7.0 BGP does not connect to passive neighbor

[Quentin Young]

Maybe I missed the email, but I think Donald asked for a `show bgp next hop`, which I’m not seeing.

I would also suggest opening a bug report on our Github issue tracker (https://github.com/frrouting/frr/issues <https://github.com/frrouting/frr/issues>) for this as it’s more likely to get more attention there, where you can use things like code blocks, attachments, etc etc than here on the mailing list. I usually scrub my email inbox regularly but issues on GitHub stay there, available to the public and us, forever.

Quentin

> On Apr 29, 2019, at 1:11 AM, Chris G <chris.g at euronet.space> wrote:
> 
> Hello,
> 
> Any idea please? It's a very frustrating bug and a very old one as well..
> 
> Chris
> 
> On 19.04.2019 15:33, Chris G wrote:
>> Hello,
>> 
>> Meanwhile I have tested several FRR versions using the official RPM packages available on the FRR website.
>> 
>> These FRR versions behave exactly the same. When the BGP session is configured inside a view, and there is no other non-view BGP session, FRR will not attempt to initiate a connection:
>> frr-5.0.2-001.el7.centos.x86_64.rpm
>> frr-6.0.2-01.el7.centos.x86_64.rpm
>> frr-7.0-01.el7.centos.x86_64.rpm
>> 
>> However, this version works as expected:
>> frr-4.0.1-2019010801.el7.centos.x86_64.rpm
>> 
>> FRRouting 4.0.1 (ts).
>> Copyright 1996-2005 Kunihiro Ishiguro, et al.
>> configured with:
>>      '--build=x86_64-redhat-linux-gnu' '--host=x86_64-redhat-linux-gnu' '--program-prefix=' '--disable-dependency-tracking' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--datadir=/usr/share' '--includedir=/usr/include' '--sharedstatedir=/var/lib' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--sbindir=/usr/lib/frr' '--sysconfdir=/etc/frr' '--libdir=/usr/lib64' '--libexecdir=/usr/libexec' '--localstatedir=/var/run/frr' '--disable-werror' '--enable-irdp' '--enable-multipath=256' '--enable-vtysh' '--enable-ospfclient' '--enable-ospfapi=yes' '--enable-rtadv=yes' '--enable-ldpd' '--enable-pimd' '--enable-nhrpd' '--enable-eigrpd' '--enable-babeld' '--enable-user=frr' '--enable-group=frr' '--enable-vty-group=frrvty' '--enable-fpm' '--enable-watchfrr' '--disable-bgp-vnc' '--enable-isisd=yes' '--enable-systemd=yes' '--enable-poll=yes' 'build_alias=x86_64-redhat-linux-gnu' 'host_alias=x86_64-redhat-linux-gnu' 'PKG_CONFIG_PATH=:/usr/lib64/pkgconfig:/usr/share/pkgconfig' 'CFLAGS=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches   -m64 -mtune=generic' 'LDFLAGS=-Wl,-z,relro '
>> 
>> Is this a very old bug?
>> 
>> Kind regards,
>> Chris
>> 
>> On 18.04.2019 17:24, Donald Sharp wrote:
>>> vtysh -c "show ver"
>>> 
>>> As well as `show bgp nexthop`
>>> 
>>> donald
>>> 
>>> On Thu, Apr 18, 2019 at 8:25 AM Chris G <chris.g at euronet.space> wrote:
>>>> Dear Christoffer,
>>>> 
>>>> Thank you for your reply!
>>>> 
>>>> I don't have access to my provider's BGP configuration I'm afraid.
>>>> However I am pasting my end of the setup below.
>>>> 
>>>> It might be relevant to note that the BGP instance is configure inside a
>>>> view, as I do not need anything to be installed in the main routing table.
>>>> 
>>>> I am using tcpdump to listen on the network interface for any traffic,
>>>> and FRR doesn't appear to be initiating any connections to my upstream.
>>>> 
>>>> My BGP config:
>>>> 
>>>> router bgp 65001 view ISP
>>>>    bgp router-id 192.168.255.227
>>>>    bgp log-neighbor-changes
>>>>    neighbor 192.168.255.225 remote-as 65000
>>>>    neighbor 192.168.255.225 description default
>>>>    neighbor 192.168.255.225 update-source 192.168.255.227
>>>>    neighbor 192.168.255.225 timers 10 30
>>>>    neighbor 192.168.200.29 remote-as 65000
>>>>    neighbor 192.168.200.29 description full-table
>>>>    neighbor 192.168.200.29 ebgp-multihop 255
>>>>    neighbor 192.168.200.29 update-source 192.168.255.227
>>>>    !
>>>>    address-family ipv4 unicast
>>>>     network 10.10.10.0/24
>>>>     neighbor 192.168.255.225 soft-reconfiguration inbound
>>>>     neighbor 192.168.255.225 weight 1000
>>>>     neighbor 192.168.255.225 prefix-list AS65001-export out
>>>>     neighbor 192.168.200.29 soft-reconfiguration inbound
>>>>     neighbor 192.168.200.29 weight 1000
>>>>     neighbor 192.168.200.29 prefix-list noexport out
>>>>    exit-address-family
>>>> !
>>>> 
>>>> Kind regards,
>>>> Chris
>>>> 
>>>> On 18.04.2019 12:58, Hansen, Christoffer wrote:
>>>>> On 18/04/2019 10:21, Chris G wrote:
>>>>>> I have an issue where my BGP neighbor is configured in passive mode,
>>>>>> however my BGP (FRR 7.0) instance does not attempt to connect to this
>>>>>> neighbor.
>>>>>> 
>>>>>> Is this expected behavior? Is there any way I can force my BGP instance
>>>>>> to initiate a connection to the passive BGP neighbor ?
>>>>> Could you provide the relevant neighbor configuration from both sides of
>>>>> you BGP peering in this context?
>>>>> 
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>> 
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> 
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