Hi guys,
I modified the startup.conf and enabled the tuntap interface.
After vpp (vpp20.01) startup, it will create a tun interface named “vnet” in
host linux. If I add an ip address to the physical interface, the same ip
address will be added to vnet. But if I add an route entry, it will not. So the
question is : Why vpp not synchronize route to host linux?
DBGvpp# set interface state TenGigabitEthernet7/0/0 up
DBGvpp# set interface ip address TenGigabitEthernet7/0/0 10.161.26.9/24
DBGvpp# ip route add 10.161.55.0/24 via 10.161.26.1
DBGvpp# show interface addr
TenGigabitEthernet7/0/0 (up):
L3 10.161.26.9/24
local0 (dn):
tuntap-0 (up):
DBGvpp# show fib entry
FIB Entries:
0@0.0.0.0/0
unicast-ip4-chain
[@0]: dpo-load-balance: [proto:ip4 index:1 buckets:1 uRPF:0 to:[0:0]]
[0] [@0]: dpo-drop ip4
1@0.0.0.0/32
unicast-ip4-chain
[@0]: dpo-load-balance: [proto:ip4 index:2 buckets:1 uRPF:1 to:[0:0]]
[0] [@0]: dpo-drop ip4
2@240.0.0.0/4
unicast-ip4-chain
[@0]: dpo-load-balance: [proto:ip4 index:3 buckets:1 uRPF:2 to:[0:0]]
[0] [@0]: dpo-drop ip4
3@224.0.0.0/4
unicast-ip4-chain
[@0]: dpo-load-balance: [proto:ip4 index:4 buckets:1 uRPF:3 to:[0:0]]
[0] [@0]: dpo-drop ip4
4@255.255.255.255/32
unicast-ip4-chain
[@0]: dpo-load-balance: [proto:ip4 index:5 buckets:1 uRPF:4 to:[0:0]]
[0] [@0]: dpo-drop ip4
5@::/0
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:6 buckets:1 uRPF:5 to:[0:0]]
[0] [@0]: dpo-drop ip6
6@fe80::/10
unicast-ip6-chain
[@0]: dpo-load-balance: [proto:ip6 index:7 buckets:1 uRPF:6 to:[0:0]]
[0] [@14]: ip6-link-local
7@10.161.26.0/24
unicast-ip4-chain
[@0]: dpo-load-balance: [proto:ip4 index:9 buckets:1 uRPF:8 to:[0:0]]
[0] [@4]: ipv4-glean: TenGigabitEthernet7/0/0: mtu:9000
ffffffffffff00a0c90000000806
8@10.161.26.0/32
unicast-ip4-chain
[@0]: dpo-load-balance: [proto:ip4 index:10 buckets:1 uRPF:9 to:[0:0]]
[0] [@0]: dpo-drop ip4
9@10.161.26.255/32
unicast-ip4-chain
[@0]: dpo-load-balance: [proto:ip4 index:11 buckets:1 uRPF:11 to:[0:0]]
[0] [@0]: dpo-drop ip4
10@10.161.26.9/32
unicast-ip4-chain
[@0]: dpo-load-balance: [proto:ip4 index:12 buckets:1 uRPF:13 to:[0:0]]
[0] [@2]: dpo-receive: 10.161.26.9 on TenGigabitEthernet7/0/0
11@10.161.55.0/24
unicast-ip4-chain
[@0]: dpo-load-balance: [proto:ip4 index:14 buckets:1 uRPF:14 to:[0:0]]
[0] [@12]: dpo-load-balance: [proto:ip4 index:13 buckets:1 uRPF:12 to:[0:0]]
[0] [@3]: arp-ipv4: via 10.161.26.1 TenGigabitEthernet7/0/0
12@10.161.26.1/32
unicast-ip4-chain
[@0]: dpo-load-balance: [proto:ip4 index:13 buckets:1 uRPF:12 to:[0:0]]
[0] [@3]: arp-ipv4: via 10.161.26.1 TenGigabitEthernet7/0/0
[root@localhost ~]# ip route
default via 192.169.46.1 dev eth0
10.161.26.0/24 dev vnet proto kernel scope link src 10.161.26.9
169.254.0.0/16 dev eth0 scope link metric 1011
169.254.0.0/16 dev eth3 scope link metric 1012
169.254.0.0/16 dev eth6 scope link metric 1013
169.254.0.0/16 dev eth4 scope link metric 1015
169.254.0.0/16 dev eth2 scope link metric 1016
169.254.0.0/16 dev eth5 scope link metric 1017
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
192.169.46.0/24 dev eth0 proto kernel scope link src 192.169.46.244
[root@localhost ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
9: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state
DOWN
qlen 1000
link/ether 52:54:00:0d:71:d9 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
valid_lft forever preferred_lft forever
10: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0
st
ate DOWN qlen 1000
link/ether 52:54:00:0d:71:d9 brd ff:ff:ff:ff:ff:ff
11: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 00:a0:c9:20:00:06 brd ff:ff:ff:ff:ff:ff
inet 192.169.46.244/24 brd 192.169.46.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::2a0:c9ff:fe20:6/64 scope link
valid_lft forever preferred_lft forever
12: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 00:a0:c9:06:11:13 brd ff:ff:ff:ff:ff:ff
inet6 fe80::2a0:c9ff:fe06:1113/64 scope link
valid_lft forever preferred_lft forever
13: eth6: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen
1000
link/ether 00:a0:c9:20:00:07 brd ff:ff:ff:ff:ff:ff
15: eth4: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen
1000
link/ether 34:12:78:56:01:01 brd ff:ff:ff:ff:ff:ff
16: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 00:a0:c9:00:00:02 brd ff:ff:ff:ff:ff:ff
inet6 fe80::2a0:c9ff:fe00:2/64 scope link
valid_lft forever preferred_lft forever
17: eth5: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen
1000
link/ether 34:12:78:56:01:03 brd ff:ff:ff:ff:ff:ff
18: vnet: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 4352 qdisc pfifo_fast
st
ate UP qlen 500
link/none
inet 10.161.26.9/24 scope global vnet:0
valid_lft forever preferred_lft forever
Thanks
Jerry
-=-=-=-=-=-=-=-=-=-=-=-
Links: You receive all messages sent to this group.
View/Reply Online (#18456): https://lists.fd.io/g/vpp-dev/message/18456
Mute This Topic: https://lists.fd.io/mt/79415753/21656
Group Owner: vpp-dev+ow...@lists.fd.io
Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-
