Hi all,
Is anyone working on BGP auto RD support, which in turn needs support
for the "IP address" RD notation:
<IP address>:<ID e.g. VNI>
instead of <ASN-2>:<ID>
Or have I overlooked something in the code which already enables these
features ?
If not I'll have a go at implementing this.
I tried the following:
vni = 655370
loopback_IP = "10.1.1.1"
evpn_route_dist='{}:{}'.format(loopback_IP, vni)
speaker.vrf_add(
route_dist=evpn_route_dist,
route_family=RF_L2_EVPN,
import_rts=[evpn_route_dist],
export_rts=[evpn_route_dist]
)
Traceback (most recent call last):
File
"/usr/local/lib/python2.7/dist-packages/ryu/services/protocols/bgp/api/base.py",
line 205, in
call
return call(**kwargs)
File
"/usr/local/lib/python2.7/dist-packages/ryu/services/protocols/bgp/api/base.py",
line 173, in
wrapped_fun
return func(*req_values, **opt_items)
File
"/usr/local/lib/python2.7/dist-packages/ryu/services/protocols/bgp/api/prefix.py",
line 308, in
add_evpn_local
route_type=route_type, **kwargs)
File
"/usr/local/lib/python2.7/dist-packages/ryu/services/protocols/bgp/core_managers/table_manager.py",
line 576, in
update_vrf_table
pmsi_tunnel_type=pmsi_tunnel_type)
File
"/usr/local/lib/python2.7/dist-packages/ryu/services/protocols/bgp/info_base/vrf.py",
line 274, in
insert_vrf_path
as_number=int(as_num),
ValueError: invalid literal for int() with base 10: '10.1.1.1'
Traceback (most recent call last):
File "./bgp-ryu.py", line 198, in <module>
bgp_speaker = myBGP()
File "./bgp-ryu.py", line 51, in __init__
self.start_BGP()
File "./bgp-ryu.py", line 164, in start_BGP
next_hop=loopback_IPv4,
File
"/usr/local/lib/python2.7/dist-packages/ryu/services/protocols/bgp/bgpspeaker.py",
line 671, in
evpn_prefix_add
call(func_name, **kwargs)
File
"/usr/local/lib/python2.7/dist-packages/ryu/services/protocols/bgp/api/base.py",
line 211, in
call
raise ApiException(desc=str(e))
ryu.services.protocols.bgp.api.base.ApiException: 500.1 - invalid
literal for int() with base 10: '10.1.1.1'
Or converting the IP address to int (like an 4-byte ASN):
vni = 655370
loopback_IP = "10.1.1.1"
IPv4_as_int = int(ipaddress.IPv4Address(unicode(loopback_IP)))
evpn_route_dist='{}:{}'.format(IPv4_as_int, vni)
speaker.vrf_add(
route_dist=evpn_route_dist,
route_family=RF_L2_EVPN,
import_rts=[evpn_route_dist],
export_rts=[evpn_route_dist]
)
File "/usr/local/lib/python2.7/dist-packages/ryu/lib/packet/bgp.py",
line 193, in serialize_value
return struct.pack(self._VALUE_PACK_STR, *args)
error: 'H' format requires 0 <= number <= 65535
https://tools.ietf.org/html/draft-ietf-l2vpn-evpn-11#section-7.9
"It is RECOMMENDED to use the Type 1 RD [RFC4364]. The value field
comprises an IP address of the PE (typically, the loopback address)
followed by a number unique to the PE. This number may be generated by the
PE. Or in the Unique VLAN EVPN case, the low order 12 bits may be the 12
bit VLAN ID, with the remaining high order 4 bits set to 0"
Also: https://tools.ietf.org/html/rfc4364#section-4.2
Although the RFC's mention "Type 1 RD" limited to 12 bit VLAN ID's,
RD's can actually be composed of 2-byte ASN, 4-byte ASN plus VXLAN
VNI's.
Working support for auto generated RD/RT is implemented by various
vendors, e.g. :
Cumulus "Enable EVPN with Automatic RDs and RTs":
router bgp 65000
address-family evpn
neighbor swp1 activate
advertise-vni
Juniper
vrf-target {
community;
auto
import community-name;
export community-name;
}
Cisco (NX-OS):
evpn
vni <VNI> l2
rd auto
route-target import auto
route-target export auto
Regards,
Albert
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
_______________________________________________
Ryu-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ryu-devel
