trex-bird使用过程解析
- trex-bird原理
TRex-Bird架构图
trex 结合bird服务是采用linux上的veth及网络命名空间的技术： bird运行在trex-a-bird-ns 网络namespace里，创建veth虚接口对bird-0-0-T和bird-0-0-L；
veth接口对bird-0-0-L接口在trex-a-bird-ns空间，另外一端接口bird-0-0-T在linux默认网络空间上，birde在trex-a-bird-ns网络命名空间里发送数据报文会到bird-0-0-T接口上，trex将接口bird-0-0-T上接收到的数据通过dpdk接口发送出去
- 网络拓扑图
TRex-Bird验证拓扑图
- trex 配置文件
### Config file generated by dpdk_setup_ports.py ###
- version: 2
interfaces: ['02:02.0', '02:03.0']
low_end: true
stack: linux_based
port_info:
- ip: 192.168.33.18
default_gw: 192.168.33.1
- ip: 192.168.34.18
default_gw: 192.168.34.1
platform:
master_thread_id: 0
latency_thread_id: 1
dual_if:
- socket: 0
threads: [2,3]
- 运行trex-bird
$sudo ./t-rex-64 -i --bird-server --software -c 2
- 运行trex-console
trex>service -a
trex(service)>portattr --prom on --mult on
trex(service)>plugins load bird
trex>portattr -a
Port Status
port | 0 | 1
----------------+----------------------+---------------------
driver | net_e1000_em | net_e1000_em
description | Unknown | Unknown
link status | UP | UP
link speed | 1 Gb/s | 1 Gb/s
port status | IDLE | IDLE
promiscuous | off | off
multicast | on | on
flow ctrl | none | none
vxlan fs | - | -
-- | |
layer mode | IPv4 | IPv4
src IPv4 | 192.168.33.18 | 192.168.34.18
IPv6 | off | off
src MAC | 00:0c:29:1a:48:84 | 00:0c:29:1a:48:8e
--- | |
Destination | 192.168.33.1 | 192.168.34.1
ARP Resolution | 00:50:56:c0:00:01 | 00:50:56:c0:00:02
---- | |
VLAN | - | -
----- | |
PCI Address | 0000:02:02.0 | 0000:02:03.0
NUMA Node | 0 | 0
RX Filter Mode | hardware match | hardware match
RX Queueing | off | off
Grat ARP | off | off
------ | |
trex(service)>plugins bird add_node -p 0 --mac 00:0c:29:1a:48:83 --ipv4 192.168.33.19 --ipv4-subnet 24
trex(service)>plugins bird show_nodes -p 0
Setting port 0 in with namespace configuration [SUCCESS]
wait_for_async_results [SUCCESS]
Setting port 0 in with namespace configuration [SUCCESS]
wait_for_async_results [SUCCESS]
Bird Nodes Information
Node MAC | ipv4 address | ipv4 subnet | ipv6 enabled | ipv6 address | ipv6 subnet | vlans | tpids
------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+------------------
00:0c:29:1a:48:83 | 192.168.33.19 | 24 | False | - | - | - | -
trex(service)>plugins bird add_node -p 1 --mac 00:0c:29:1a:48:8f --ipv4 192.168.34.19 --ipv4-subnet 24
Setting port 1 in with namespace configuration [SUCCESS]
wait_for_async_results [SUCCESS]
Applying attributes on port(s) [0, 1]: [SUCCESS]
Setting port 1 in with namespace configuration [SUCCESS]
wait_for_async_results [SUCCESS]
trex(service)>plugins bird show_nodes -p 1
Setting port 1 in with namespace configuration [SUCCESS]
wait_for_async_results [SUCCESS]
Setting port 1 in with namespace configuration [SUCCESS]
wait_for_async_results [SUCCESS]
Bird Nodes Information
Node MAC | ipv4 address | ipv4 subnet | ipv6 enabled | ipv6 address | ipv6 subnet | vlans | tpids
------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+------------------
00:0c:29:1a:48:8f | 192.168.34.19 | 24 | False | - | - | - | -
参考linux主机环境:
$ sudo ip netns ls
trex-a-0-0 (id: 1)
trex-a-1-0 (id: 0)
trex-a-bird-ns (id: 2)
$ifconfig
bird-0-0-T: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9280
ether be:b3:0b:ec:c1:10 txqueuelen 1000 (Ethernet)
RX packets 14 bytes 684 (684.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 137 bytes 23834 (23.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
bird-1-0-T: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9280
ether c6:9c:ab:55:df:6d txqueuelen 1000 (Ethernet)
RX packets 4 bytes 232 (232.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 121 bytes 20593 (20.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.210.198 netmask 255.255.255.0 broadcast 192.168.210.255
inet6 fe80::20c:29ff:fe1a:487a prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:1a:48:7a txqueuelen 1000 (Ethernet)
RX packets 237834 bytes 168717112 (168.7 MB)
RX errors 0 dropped 24158 overruns 0 frame 0
TX packets 147862 bytes 45169033 (45.1 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 129061 bytes 21420353 (21.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 129061 bytes 21420353 (21.4 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
trex-a-0-0-T: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9280
ether e2:18:e9:38:9a:74 txqueuelen 1000 (Ethernet)
RX packets 24 bytes 1896 (1.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 85 bytes 6334 (6.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
trex-a-1-0-T: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9280
ether 12:54:67:6a:54:f2 txqueuelen 1000 (Ethernet)
RX packets 4537 bytes 458248 (458.2 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1671 bytes 176128 (176.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
加载bird配置
trex(service)>plugins bird set_config -f bird/cfg/bgp.conf -r bird/cfg/ipv4_routes.conf
Bird configuration result: Configured successfully
trex(service)>plugins bird show_config
router id 100.100.100.100;
protocol device {
scan time 1;
}
protocol bgp my_bgp1 {
local 192.168.33.19 as 65000; # put your local ip and as number here
neighbor 192.168.34.19 as 65000; # put your dut ip and as number here
ipv4 {
import all;
export all;
};
}
# Running a second BGP instance in another interface.
protocol bgp my_bgp2 {
local 192.168.34.19 as 65000;
neighbor 192.168.33.19 as 65000;
ipv4 {
import all;
export all;
};
}
protocol static {
ipv4 {
import all;
export all;
};
route 42.42.42.0/32 via 192.168.33.3;
route 42.42.42.1/32 via 192.168.33.3;
route 42.42.42.2/32 via 192.168.33.3;
route 42.42.42.3/32 via 192.168.33.3;
route 42.42.42.4/32 via 192.168.33.3;
route 42.42.42.5/32 via 192.168.33.3;
route 42.42.42.6/32 via 192.168.33.3;
route 42.42.42.7/32 via 192.168.33.3;
route 42.42.42.8/32 via 192.168.33.3;
route 42.42.42.9/32 via 192.168.33.3;
route 42.42.42.10/32 via 192.168.33.3;
}
查看状态
trex(service)>plugins bird show_protocols
Name Proto Table State Since Info
device1 Device --- up 03:01:16.681
my_bgp1 BGP --- start 03:32:42.051 Connect
my_bgp2 BGP --- start 03:32:42.051 Connect
static1 Static master4 up 03:01:16.681
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