Hi Iwase,
That is exactly what I mean. This could be a problem while using Internet in a
vrf. Sending each route in a separate update causes huge delay. Also for my
scenario this leads a huge delay while starting up the session (nearly 2000
updates).
Thanks,
Deniz
> On 07 May 2018, at 07:01, Iwase Yusuke <iwase.yusu...@gmail.com> wrote:
>
> Hi Deniz,
>
> Sorry for the delay.
>
> You mean GoBGP packs multiple NLRIs in to a single UPDATE message when
> ipv4-unicast, but does not pack NLRIs when l3vpn-ipv4-unicast and separates
> them
> for each UPDATE messages, right?
>
> I've tested on my local with the following codes, as you said,
> l3vpn-ipv4-unicast routes are not packed as a single UPDATE message.
>
>
> // add ipv4 routes
> attrs := []bgp.PathAttributeInterface{
> bgp.NewPathAttributeOrigin(0),
> bgp.NewPathAttributeNextHop("10.0.0.1"),
> bgp.NewPathAttributeAsPath(nil),
> }
> ipv4Path1 := table.NewPath(nil, bgp.NewIPAddrPrefix(24, "172.16.1.0"), false,
> attrs, time.Now(), false)
> ipv4Path2 := table.NewPath(nil, bgp.NewIPAddrPrefix(24, "172.16.2.0"), false,
> attrs, time.Now(), false)
> if _, err := s.AddPath("", []*table.Path{ipv4Path1, ipv4Path2}); err != nil {
> log.Fatal(err)
> }
>
> // add vpnv4 routes
> labels := bgp.NewMPLSLabelStack(100)
> rd, err := bgp.ParseRouteDistinguisher("65000:100")
> if err != nil {
> log.Fatal(err)
> }
> nlri1 := bgp.NewLabeledVPNIPAddrPrefix(24, "172.17.1.0", *labels, rd)
> attrs1 := []bgp.PathAttributeInterface{
> bgp.NewPathAttributeOrigin(0),
> bgp.NewPathAttributeAsPath(nil),
> bgp.NewPathAttributeMpReachNLRI("10.0.0.1", []bgp.AddrPrefixInterface{nlri1}),
> }
> vpnv4Path1 := table.NewPath(nil, nlri1, false, attrs1, time.Now(), false)
> nlri2 := bgp.NewLabeledVPNIPAddrPrefix(24, "172.17.2.0", *labels, rd)
> attrs2 := []bgp.PathAttributeInterface{
> bgp.NewPathAttributeOrigin(0),
> bgp.NewPathAttributeAsPath(nil),
> bgp.NewPathAttributeMpReachNLRI("10.0.0.1", []bgp.AddrPrefixInterface{nlri2}),
> }
> vpnv4Path2 := table.NewPath(nil, nlri2, false, attrs2, time.Now(), false)
> if _, err := s.AddPath("", []*table.Path{vpnv4Path1, vpnv4Path2}); err != nil
> {
> log.Fatal(err)
> }
>
>
> And also I found that the packaging mechanism for ipv4-unicast are does not
> implemented to other address families.
> https://github.com/osrg/gobgp/blob/master/table/message.go
>
> "packerMP" and "packerV4" packs paths to be sent into UPDATE messages, only
> "packerV4" compares hash of path attributes and compress paths into a single
> UPDATE message.
> https://github.com/osrg/gobgp/blob/756cc9162afb675dd7ca159b6f07a6d5b927bcc1/table/message.go#L377-L398
>
>
> Thanks,
> Iwase
>
> On 2018年05月04日 21:25, Deniz Aydın wrote:
>> Hi,
>> I have tried the same scenario with gobgpd and gobgp and the result is same.
>> I guess sending each of the l3vpn-ipv4-unicast route in a separate update is
>> the default method although sending the ipv4-unicast routes is not same. Its
>> packs routes in a single updates.
>>> On 25 Apr 2018, at 15:02, Deniz Aydın <deniz.ay...@turknet.net.tr
>>> <mailto:deniz.ay...@turknet.net.tr>> wrote:
>>>
>>> Hi Iwase,
>>>
>>> I have tried to send multiple routes for with the same rd and same
>>> attributes. But its sends the update in multiple bgp updates. I expect to
>>> group prefixes with the same RD and attributes (RT, local pref etc) in a
>>> single bgp updates. Is this the supposed behaviour?
>>>
>>> mpls := bgp.NewMPLSLabelStack(100)
>>> rd := bgp.NewRouteDistinguisherTwoOctetAS(1,1)
>>> ecommunities := []bgp.ExtendedCommunityInterface{
>>> bgp.NewTwoOctetAsSpecificExtended(bgp.EC_SUBTYPE_ROUTE_TARGET, 1, 1, true),
>>> }
>>> nlri1 := bgp.NewLabeledVPNIPAddrPrefix(32, "11.0.0.1", *mpls, rd)
>>>
>>> mplsattrs1 := []bgp.PathAttributeInterface{
>>> bgp.NewPathAttributeOrigin(0),
>>> bgp.NewPathAttributeExtendedCommunities(ecommunities),
>>> bgp.NewPathAttributeMpReachNLRI("192.168.1.1",
>>> []bgp.AddrPrefixInterface{nlri1}),
>>> }
>>> nlri2 := bgp.NewLabeledVPNIPAddrPrefix(32, "11.0.0.2", *mpls, rd)
>>>
>>> mplsattrs2 := []bgp.PathAttributeInterface{
>>> bgp.NewPathAttributeOrigin(0),
>>> bgp.NewPathAttributeExtendedCommunities(ecommunities),
>>> bgp.NewPathAttributeMpReachNLRI("192.168.1.1",
>>> []bgp.AddrPrefixInterface{nlri2}),
>>> }
>>> //send the update
>>> if _, err := s.AddPath("", []*table.Path{table.NewPath(nil, nlri1, false,
>>> mplsattrs1, time.Now(), false),table.NewPath(nil, nlri2, false, mplsattrs2,
>>> time.Now(), false)}); err != nil {
>>> log.Fatal(err)
>>> }
>>>
>>>
>>> DEBU[0025] sent update Key=10.2.51.7
>>> State=BGP_FSM_ESTABLISHED Topic=Peer attributes="[{Origin: i} {LocalPref:
>>> 100} {MpReach(l3vpn-ipv4-unicast): {Nexthop: 192.168.1.1, NLRIs:
>>> [1:1:11.0.0.1/32]}} {Extcomms: [1:1]}]" nlri="[]" withdrawals="[]"
>>> DEBU[0025] sent update Key=10.2.51.7
>>> State=BGP_FSM_ESTABLISHED Topic=Peer attributes="[{Origin: i} {LocalPref:
>>> 100} {MpReach(l3vpn-ipv4-unicast): {Nexthop: 192.168.1.1, NLRIs:
>>> [1:1:11.0.0.2/32]}} {Extcomms: [1:1]}]" nlri="[]" withdrawals="[]”
>>>
>>>
>>>
>>> This the update from the router, multiple prefixes in a single update.
>>>
>>> DEBU[0030] received update Key=10.2.51.7
>>> Topic=Peer attributes="[{MpReach(l3vpn-ipv4-unicast): {Nexthop: 10.2.51.7,
>>> NLRIs: [1:1:1.1.1.3/32 1:1:1.1.1.2/32 1:1:1.1.1.1/32]}} {Origin: ?} {Med:
>>> 0} {LocalPref: 100} {Extcomms: [1:1]}]" nlri="[]" withdrawals="[]"
>>>
>>>
>>>
>>>> On 25 Apr 2018, at 11:09, Deniz Aydin <deniz.ay...@turknet.net.tr
>>>> <mailto:deniz.ay...@turknet.net.tr>> wrote:
>>>>
>>>> Hi Iwase,
>>>>
>>>> Sorry for late update. It was holiday in here :). And also thanks for the
>>>> sample code. I was lost in AddPath function in the server.go. Tried to use
>>>> in the native way but it seems it only has subfunction for EVPNNLRI’es.
>>>> And then no time dig more. Again great thanks for help. It save me lots of
>>>> time. Also Thanks Dale for the reply.
>>>>
>>>> I have added router-target extended community to the code you have send.
>>>> gobgp
>>>> <https://github.com/osrg/gobgp/tree/3645e7dee68faff9bd4fbadbb47dc89ecd06058a>/packet
>>>>
>>>> <https://github.com/osrg/gobgp/tree/3645e7dee68faff9bd4fbadbb47dc89ecd06058a/packet>/bgp
>>>>
>>>> <https://github.com/osrg/gobgp/tree/3645e7dee68faff9bd4fbadbb47dc89ecd06058a/packet/bgp>/helper.go
>>>> helped me lot.
>>>>
>>>>
>>>> ecommunities := []bgp.ExtendedCommunityInterface{
>>>> bgp.NewTwoOctetAsSpecificExtended(bgp.EC_SUBTYPE_ROUTE_TARGET, 1, 1, true),
>>>> }
>>>>
>>>>
>>>> nlri := bgp.NewLabeledVPNIPAddrPrefix(32, "10.0.0.1", *mpls, rd)
>>>> attrs := []bgp.PathAttributeInterface{
>>>> bgp.NewPathAttributeOrigin(0),
>>>> bgp.NewPathAttributeExtendedCommunities(ecommunities),
>>>> bgp.NewPathAttributeMpReachNLRI("192.168.1.1",
>>>> []bgp.AddrPrefixInterface{nlri}),
>>>> }
>>>>
>>>> if _, err := s.AddPath("", []*table.Path{table.NewPath(nil, nlri, false,
>>>> mplsattrs, time.Now(), false)}); err != nil {
>>>> log.Fatal(err)
>>>> }
>>>>
>>>>
>>>> Thanks,
>>>> Deniz
>>>>
>>>>
>>>>
>>>>> On 23 Apr 2018, at 04:41, Iwase Yusuke <iwase.yusu...@gmail.com
>>>>> <mailto:iwase.yusu...@gmail.com>> wrote:
>>>>>
>>>>> Hi Deniz and Thanks Dale!
>>>>>
>>>>> "gobgp/cmd/global.go" does similar, but it might be too complex.
>>>>> https://github.com/osrg/gobgp/blob/master/gobgp/cmd/global.go#L1147-L1177
>>>>>
>>>>> The following snippet helps for you?
>>>>>
>>>>>
>>>>> mpls := bgp.NewMPLSLabelStack(100)
>>>>>
>>>>> rd := bgp.NewRouteDistinguisherTwoOctetAS(65000, 100)
>>>>> // Or, if you prefer to get RD from string;
>>>>> // rd, err := bgp.ParseRouteDistinguisher("65000:100")
>>>>> // if err != nil {
>>>>> // return nil, err
>>>>> // }
>>>>>
>>>>> nlri := bgp.NewLabeledVPNIPAddrPrefix(24, "10.0.0.0", *mpls, rd)
>>>>>
>>>>> attrs := []bgp.PathAttributeInterface{
>>>>> bgp.NewPathAttributeOrigin(0),
>>>>> bgp.NewPathAttributeAsPath([]bgp.AsPathParamInterface{
>>>>> bgp.NewAs4PathParam(bgp.BGP_ASPATH_ATTR_TYPE_SEQ, []uint32{65002, 65001}),
>>>>> }),
>>>>> bgp.NewPathAttributeMpReachNLRI("192.168.1.1",
>>>>> []bgp.AddrPrefixInterface{nlri}),
>>>>> }
>>>>>
>>>>> path := table.NewPath(nil, nlri, false, attrs, time.Now(), false)
>>>>>
>>>>>
>>>>> Thanks,
>>>>> Iwase
>>>>>
>>>>>
>>>>> On 2018年04月21日 05:49, Dale Worley wrote:
>>>>>> On 4/20/18 9:05 AM, Deniz Aydın wrote:
>>>>>>> I am tring to use gobgp for just announcing l3vpn-ipv4-unicast routes
>>>>>>> stored in database, some blackhole routes for different user profiles.
>>>>>>> Can you give me an example how can I add some l3mpls vpn path like the
>>>>>>> one in the /GoBGP as a Go Native BGP library./
>>>>>> I can give you some pointers: It looks like the GoBGP constructors for
>>>>>> route objects closely parallel the structure of routes inside BGP. So
>>>>>> look at https://tools.ietf.org/html/rfc3107#page-3 for how MPLS labels
>>>>>> are attached to prefixes, and
>>>>>> https://tools.ietf.org/html/rfc4364#section-4.2 for how route
>>>>>> distinguishers are used.
>>>>>> I see in github.com/osrg/gobgp/packet/bgp/bgp.go
>>>>>> <http://github.com/osrg/gobgp/packet/bgp/bgp.go> constructors like func
>>>>>> NewLabeledVPNIPAddrPrefix and a lot of lines containing "MPLS".
>>>>>> Dale
>>>>>> ------------------------------------------------------------------------------
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>>>>>> https://lists.sourceforge.net/lists/listinfo/gobgp-devel
>>>>
>>>
>> TurkNet <https://turk.net/>
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