Call for testing: bird as VPN route reflector

[Alexander V. Chernikov]

On 02.12.2011 16:44, Allan Pinto wrote:
> Hi Alexander,
> it has worked successfully acting as a vpn RR, have attached the
> diagram used as the setup,
> now if only mpls multicast vpn arrives i could replace my cisco box as
> the RR. :) , is it now possible in BIRD to have VRF interfaces?
Well, it depends on what exactly you mean by 'VRF interfaces'. Bird does 
signalling, not routing. If you're talking about announcing static 
routes inside some IPv4 VRF in bird this is currently not possible 
without kernel support ( you have to announce some MPLS label which has 
to be requested from LDP which assumes you can handle MPLS unicast 
traffic inside kernel)

Regarding multicast: you're talking about ipv4 MDT (RFC 6037) ?
Current version supports unicast only, however I'll take a look on this.
It seems for me that this can be easily implemented.

Btw, I've updated original bird-20111202.tar.gz distfile.
Changes:
* remove unneeded __packed keyword
* do not send NEXT_HOP attribute for MP-BGP updates (this causes Huawei 
to ignore VPNv6 routes)

>
> below setup, tell me if you need more details i can provide them later.
>
> the cloud is a linux box [slitaz] with bird acting as a vpnv4 RR,<--
> loopback 5.5.5.5
> R1 acts as a PE router for VRF AAA<-- loopback 1.1.1.1
> R2 is a plain P router passing ldp<-- loopback 2.2.2.2
> R3 is another PE router for vrf AAA<-- loopback 3.3.3.3
> on linux i made the loopback under lo:1 but in the bird ospf
> configuration, the interface should still be mentioned as lo not lo:1
> (wasted half an hour on this)

Well, IMHO for this case bird documentation ( 
http://bird.network.cz/?get_doc&f=bird-3.html#ss3.3 ) should be updated 
to clarify linux-specific alias behavior.

>
> bird -->  R1 -->  R2 -->  R3 .<-- all four are connected through ospf
>
>
> R1 and R3 make the bgp neighbourship with BIRDbox ,
> VRF AAA created on R1 and R3 with two loopback interfaces on each
> router and one addnl sub-interface on R3 under VRF AAA.
>
> below is some output from R1,
> R1#ping vrf AAA 13.13.13.1
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 13.13.13.1, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 16/38/72 ms
> R1#ping vrf AAA 13.13.13.1
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 13.13.13.1, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 32/70/156 ms
> R1#sh ip bgp vpnv4 all summary
> BGP router identifier 1.1.1.1, local AS number 65001
> BGP table version is 7, main routing table version 7
> 3 network entries using 411 bytes of memory
> 3 path entries using 204 bytes of memory
> 3/2 BGP path/bestpath attribute entries using 372 bytes of memory
> 1 BGP rrinfo entries using 24 bytes of memory
> 1 BGP extended community entries using 24 bytes of memory
> 0 BGP route-map cache entries using 0 bytes of memory
> 0 BGP filter-list cache entries using 0 bytes of memory
> BGP using 1035 total bytes of memory
> BGP activity 3/0 prefixes, 3/0 paths, scan interval 15 secs
>
> Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
> 5.5.5.5         4 65001      23      23        7    0    0 00:09:30        2
> R1#sh ip route vrf AAA
>
> Routing Table: AAA
> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
>         D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
>         N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
>         E1 - OSPF external type 1, E2 - OSPF external type 2
>         i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
>         ia - IS-IS inter area, * - candidate default, U - per-user static route
>         o - ODR, P - periodic downloaded static route
>
> Gateway of last resort is not set
>
>       4.0.0.0/24 is subnetted, 1 subnets
> B       4.4.4.0 [200/0] via 3.3.3.3, 00:07:01
>       13.0.0.0/24 is subnetted, 1 subnets
> B       13.13.13.0 [200/0] via 3.3.3.3, 00:07:01
>       14.0.0.0/24 is subnetted, 1 subnets
> C       14.14.14.0 is directly connected, Loopback100
> R1#

Thanks for testing :)
>
>
>
>
>
> On Fri, Dec 2, 2011 at 4:36 PM, Alexander V. Chernikov<melifaro at ipfw.ru>  wrote:
>> On 02.12.2011 14:53, Igor Maravić wrote:
>>>>
>>>> Current LDP/L3vpn development is done in l3vpn branch
>>>>
>>> Thanks
>>> Igor
>>>
>> Feel free to ask/submit bugs/patches :)
>>
>> --
>> WBR, Alexander
>
>
>


-- 
WBR, Alexander