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LCP插件创建对等802.1ad接口
2022-07-25 05:15:00 【redwingz】
首先，在VPP中创建物理接口GigabitEthernet8/0/0的802.1ad子接口，VLAN ID指定为2345。
vpp# create sub GigabitEthernet8/0/0 2345 dot1ad 2345 exact-match
GigabitEthernet8/0/0.2345
将802.1ad子接口设置为UP状态，MTU设置为9000，802.1ad子接口的IP地址设置为40.0.1.1。
vpp# set interface state GigabitEthernet8/0/0.2345 up
vpp# set interface mtu packet 9000 GigabitEthernet8/0/0.2345
vpp# set interface ip address GigabitEthernet8/0/0.2345 40.0.1.1/24
LCP对等接口
LCP创建802.1ad子接口的对等接口。前提是已经创建了物理接口GigabitEthernet8/0/0的对等接口e8。
vpp# lcp create GigabitEthernet8/0/0.2345 host-if e8.2345
vpp#
vpp# show interface
Name Idx State MTU (L3/IP4/IP6/MPLS) Counter Count
GigabitEthernet8/0/0 11 up 1500/0/0/0 rx packets 1035
GigabitEthernet8/0/0.2345 19 up 9000/0/0/0
以上操作LCP在内核中创建了对等接口e8.2345，如下所示。
# ip -d link show type vlan
24: [email protected]: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
link/ether 00:60:e0:6f:5a:f1 brd ff:ff:ff:ff:ff:ff promiscuity 0 minmtu 0 maxmtu 65535
vlan protocol 802.1ad id 2345 <REORDER_HDR> addrgenmode eui64 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
设置linux中对等接口e8.2345的地址，与VPP接口GigabitEthernet8/0/0.2345地址相同。
# ip link set e8.2345 up mtu 9000
# ip addr add 40.0.1.1/24 dev e8.2345
连通性测试
在外部主机配置802.1ad接口，配置接口IP地址40.0.1.2。
# ip link add link ens33 name ens33.2345 type vlan id 2345 proto 802.1ad
# ip link set ens33.2345 up mtu 9000
# ip address add 40.0.1.2/30 dev ens33.2345
# ip link set ens33.2345 up
#
# ip -d link show type vlan
46: [email protected]: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
link/ether 00:60:e0:68:9f:ee brd ff:ff:ff:ff:ff:ff promiscuity 0
vlan protocol 802.1ad id 2345 <REORDER_HDR> addrgenmode eui64 numtxqueues 1 numrxqueues 1
在VPP主机linux中ping以上外部主机的802.1ad接口地址40.0.1.2。
# ping 40.0.1.2
PING 40.0.1.2 (40.0.1.2) 56(84) bytes of data.
64 bytes from 40.0.1.2: icmp_seq=1 ttl=64 time=0.280 ms
如下为主机40.0.1.2回复的ICMP报文。
vpp# trace add dpdk-input 100
vpp# show trace
------------------- Start of thread 1 vpp_wk_0 -------------------
Packet 1
06:31:10:942744: dpdk-input
GigabitEthernet8/0/0 rx queue 0
buffer 0x877c1: current data 0, length 102, buffer-pool 0, ref-count 1, trace handle 0x1000000
ext-hdr-valid
PKT MBUF: port 10, nb_segs 1, pkt_len 102
buf_len 2176, data_len 102, ol_flags 0x180, data_off 128, phys_addr 0x8efdf0c0
packet_type 0x0 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0
rss 0x0 fdir.hi 0x0 fdir.lo 0x0
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_IP_CKSUM_NONE (0x0090) no IP cksum of RX pkt.
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_NONE (0x0108) no L4 cksum of RX pkt.
IP4: 00:60:e0:68:9f:ee -> 00:60:e0:6f:5a:f1 802.1ad vlan 2345
ICMP: 40.0.1.2 -> 40.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x2e4f dscp CS0 ecn NON_ECN
fragment id 0xfa57
ICMP echo_request checksum 0x5819 id 4352
06:31:10:942748: ethernet-input
frame: flags 0x3, hw-if-index 11, sw-if-index 11
IP4: 00:60:e0:68:9f:ee -> 00:60:e0:6f:5a:f1 802.1ad vlan 2345
06:31:10:942749: ip4-input
ICMP: 40.0.1.2 -> 40.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x2e4f dscp CS0 ecn NON_ECN
fragment id 0xfa57
ICMP echo_request checksum 0x5819 id 4352
06:31:10:942750: ip4-lookup
fib 0 dpo-idx 9 flow hash: 0x00000000
ICMP: 40.0.1.2 -> 40.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x2e4f dscp CS0 ecn NON_ECN
fragment id 0xfa57
ICMP echo_request checksum 0x5819 id 4352
06:31:10:942751: ip4-receive
ICMP: 40.0.1.2 -> 40.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x2e4f dscp CS0 ecn NON_ECN
fragment id 0xfa57
ICMP echo_request checksum 0x5819 id 4352
06:31:10:942751: ip4-icmp-input
ICMP: 40.0.1.2 -> 40.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x2e4f dscp CS0 ecn NON_ECN
fragment id 0xfa57
ICMP echo_request checksum 0x5819 id 4352
06:31:10:942751: ip4-icmp-echo-request
ICMP: 40.0.1.2 -> 40.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x2e4f dscp CS0 ecn NON_ECN
fragment id 0xfa57
ICMP echo_request checksum 0x5819 id 4352
06:31:10:942752: ip4-load-balance
fib 0 dpo-idx 15 flow hash: 0x00000000
ICMP: 40.0.1.1 -> 40.0.1.2
tos 0x00, ttl 64, length 84, checksum 0x0cda dscp CS0 ecn NON_ECN
fragment id 0x1bcd
ICMP echo_reply checksum 0x6019 id 4352
06:31:10:942752: ip4-rewrite
tx_sw_if_index 19 dpo-idx 15 : ipv4 via 40.0.1.2 GigabitEthernet8/0/0.2345: mtu:9000 next:6 flags:[] 0060e0689fee0060e06f5af188a809290800 flow hash: 0x00000000
00000000: 0060e0689fee0060e06f5af188a809290800450000541bcd000040010cda2800
00000020: 01012800010200006019110020004aae664900000000b9ee04000000
06:31:10:942753: GigabitEthernet8/0/0-output
GigabitEthernet8/0/0.2345
IP4: 00:60:e0:6f:5a:f1 -> 00:60:e0:68:9f:ee 802.1ad vlan 2345
ICMP: 40.0.1.1 -> 40.0.1.2
tos 0x00, ttl 64, length 84, checksum 0x0cda dscp CS0 ecn NON_ECN
fragment id 0x1bcd
ICMP echo_reply checksum 0x6019 id 4352
06:31:10:942753: GigabitEthernet8/0/0-tx
GigabitEthernet8/0/0 tx queue 1
buffer 0x877c1: current data 0, length 102, buffer-pool 0, ref-count 1, trace handle 0x1000000
ext-hdr-valid
vlan-1-deep local l2-hdr-offset 0 l3-hdr-offset 18
PKT MBUF: port 10, nb_segs 1, pkt_len 102
buf_len 2176, data_len 102, ol_flags 0x180, data_off 128, phys_addr 0x8efdf0c0
packet_type 0x0 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0
rss 0x0 fdir.hi 0x0 fdir.lo 0x0
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_IP_CKSUM_NONE (0x0090) no IP cksum of RX pkt.
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_NONE (0x0108) no L4 cksum of RX pkt.
IP4: 00:60:e0:6f:5a:f1 -> 00:60:e0:68:9f:ee 802.1ad vlan 2345
ICMP: 40.0.1.1 -> 40.0.1.2
tos 0x00, ttl 64, length 84, checksum 0x0cda dscp CS0 ecn NON_ECN
fragment id 0x1bcd
ICMP echo_reply checksum 0x6019 id 4352
在外部主机抓取报文，如下，以太网类型为802.1ad类型0x88a8，vlan id值为2345。
# tcpdump -i ens33 -env
tcpdump: listening on ens33, link-type EN10MB (Ethernet), capture size 262144 bytes
09:55:47.921391 00:60:e0:68:9f:ee > 00:60:e0:6f:5a:f1,
ethertype 802.1Q-QinQ (0x88a8), length 102: vlan 2345, p 0,
ethertype IPv4, (tos 0x0, ttl 64, id 1147, offset 0, flags [none], proto ICMP (1), length 84)
40.0.1.2 > 40.0.1.1: ICMP echo request, id 4608, seq 0, length 64
09:55:47.921461 00:60:e0:6f:5a:f1 > 00:60:e0:68:9f:ee,
ethertype 802.1Q (0x8100), length 102: vlan 2345, p 0,
ethertype IPv4, (tos 0x0, ttl 64, id 50901, offset 0, flags [none], proto ICMP (1), length 84)
40.0.1.1 > 40.0.1.2: ICMP echo reply, id 4608, seq 0, length 64
配置802.1.ad QinQ接口
如下在VPP中配置QinQ接口，内部协议802.1q，VLAN id为1000，外部ID为2345，配置接口IP地址50.0.1.1。
vpp# create sub GigabitEthernet8/0/0 1237 dot1ad 2345 inner-dot1q 1000 exact-match
GigabitEthernet8/0/0.1237
vpp#
vpp# set interface state GigabitEthernet8/0/0.1237 up
vpp# set interface mtu packet 9000 GigabitEthernet8/0/0.1237
vpp# set interface ip address GigabitEthernet8/0/0.1237 50.0.1.1/24
LCP创建对等接口e8.1237。
vpp# lcp create GigabitEthernet8/0/0.1237 host-if e8.1237
vpp#
vpp# show lcp
lcp lcp-auto-subint off
lcp lcp-sync on
itf-pair: [0] GigabitEthernet7/0/0 tap10 e7 18 type tap
itf-pair: [1] GigabitEthernet8/0/0 tap11 e8 19 type tap
itf-pair: [2] GigabitEthernet8/0/0.2345 tap11.2345 e8.2345 24 type tap
itf-pair: [3] GigabitEthernet8/0/0.1237 tap11.1237 e8.1237 25 type tap
将Linux对等接口e8.1237地址设置为50.0.1.1。
# ip address add 50.0.1.1/24 dev e8.1237
#
# ip -d address show type vlan
24: [email protected]: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:60:e0:6f:5a:f1 brd ff:ff:ff:ff:ff:ff promiscuity 0 minmtu 0 maxmtu 65535
vlan protocol 802.1ad id 2345 <REORDER_HDR> numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
inet 40.0.1.1/30 scope global e8.2345
25: [email protected]: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:60:e0:6f:5a:f1 brd ff:ff:ff:ff:ff:ff promiscuity 0 minmtu 0 maxmtu 65535
vlan protocol 802.1Q id 1000 <REORDER_HDR> numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
inet 50.0.1.1/24 scope global e8.1237
外部主机QinQ配置
外部Ubuntu主机配置。创建内层802.1Q子接口，配置IP地址50.0.1.2。
# ip link add link ens33.2345 name ens33.2347 type vlan id 1000 proto 802.1q
#
# ip address add 50.0.1.2/24 dev ens33.2347
# ip link set ens33.2347 up
#
# ip address show type vlan
46: [email protected]: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:60:e0:68:9f:ee brd ff:ff:ff:ff:ff:ff
inet 40.0.1.2/30 scope global ens33.2345
47: [email protected]: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:60:e0:68:9f:ee brd ff:ff:ff:ff:ff:ff
inet 50.0.1.2/24 scope global ens33.2347
QinQ连通性测试
报文外层QinQ类型0x88a8，vlan id为2345；报文内层802.1Q类型0x8100，vlan id为1000。在外部主机抓取报文如下：
# tcpdump -i ens33 -env
tcpdump: listening on ens33, link-type EN10MB (Ethernet), capture size 262144 bytes
10:36:56.991886 00:60:e0:68:9f:ee > 00:60:e0:6f:5a:f1,
ethertype 802.1Q-QinQ (0x88a8), length 106: vlan 2345, p 0, ethertype 802.1Q, vlan 1000, p 0,
ethertype IPv4, (tos 0x0, ttl 64, id 17581, offset 0, flags [none], proto ICMP (1), length 84)
50.0.1.2 > 50.0.1.1: ICMP echo request, id 5632, seq 0, length 64
10:36:56.991968 00:60:e0:6f:5a:f1 > 00:60:e0:68:9f:ee,
ethertype 802.1Q (0x8100), length 106: vlan 2345, p 0, ethertype 802.1Q, vlan 1000, p 0,
ethertype IPv4, (tos 0x0, ttl 64, id 61447, offset 0, flags [none], proto ICMP (1), length 84)
50.0.1.1 > 50.0.1.2: ICMP echo reply, id 5632, seq 0, length 64
如下为外部主机50.0.1.2回复的ICMP报文。
vpp# trace add dpdk-input 100
vpp#
vpp#
vpp# show trace
------------------- Start of thread 1 vpp_wk_0 -------------------
Packet 1
07:19:50:500241: dpdk-input
GigabitEthernet8/0/0 rx queue 0
buffer 0x87aa6: current data 0, length 106, buffer-pool 0, ref-count 1, trace handle 0x1000000
ext-hdr-valid
PKT MBUF: port 10, nb_segs 1, pkt_len 106
buf_len 2176, data_len 106, ol_flags 0x180, data_off 128, phys_addr 0x8efeaa00
packet_type 0x0 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0
rss 0x0 fdir.hi 0x0 fdir.lo 0x0
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_IP_CKSUM_NONE (0x0090) no IP cksum of RX pkt.
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_NONE (0x0108) no L4 cksum of RX pkt.
IP4: 00:60:e0:68:9f:ee -> 00:60:e0:6f:5a:f1 802.1ad vlan 2345 802.1ad vlan 1000
ICMP: 50.0.1.2 -> 50.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x9eff dscp CS0 ecn NON_ECN
fragment id 0x75a7
ICMP echo_request checksum 0xa766 id 5888
07:19:50:500247: ethernet-input
frame: flags 0x3, hw-if-index 11, sw-if-index 11
IP4: 00:60:e0:68:9f:ee -> 00:60:e0:6f:5a:f1 802.1ad vlan 2345 802.1ad vlan 1000
07:19:50:500252: ip4-input
ICMP: 50.0.1.2 -> 50.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x9eff dscp CS0 ecn NON_ECN
fragment id 0x75a7
ICMP echo_request checksum 0xa766 id 5888
07:19:50:500253: ip4-lookup
fib 0 dpo-idx 8 flow hash: 0x00000000
ICMP: 50.0.1.2 -> 50.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x9eff dscp CS0 ecn NON_ECN
fragment id 0x75a7
ICMP echo_request checksum 0xa766 id 5888
07:19:50:500255: ip4-receive
ICMP: 50.0.1.2 -> 50.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x9eff dscp CS0 ecn NON_ECN
fragment id 0x75a7
ICMP echo_request checksum 0xa766 id 5888
07:19:50:500256: ip4-icmp-input
ICMP: 50.0.1.2 -> 50.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x9eff dscp CS0 ecn NON_ECN
fragment id 0x75a7
ICMP echo_request checksum 0xa766 id 5888
07:19:50:500256: ip4-icmp-echo-request
ICMP: 50.0.1.2 -> 50.0.1.1
tos 0x00, ttl 64, length 84, checksum 0x9eff dscp CS0 ecn NON_ECN
fragment id 0x75a7
ICMP echo_request checksum 0xa766 id 5888
07:19:50:500257: ip4-load-balance
fib 0 dpo-idx 14 flow hash: 0x00000000
ICMP: 50.0.1.1 -> 50.0.1.2
tos 0x00, ttl 64, length 84, checksum 0x1523 dscp CS0 ecn NON_ECN
fragment id 0xff83
ICMP echo_reply checksum 0xaf66 id 5888
07:19:50:500258: ip4-rewrite
tx_sw_if_index 21 dpo-idx 14 : ipv4 via 50.0.1.2 GigabitEthernet8/0/0.1237: mtu:9000 next:6 flags:[] 0060e0689fee0060e06f5af188a80929810003e80800 flow hash: 0x00000000
00000000: 0060e0689fee0060e06f5af188a80929810003e8080045000054ff8300004001
00000020: 152332000101320001020000af6617000000b1b96649000000001496
07:19:50:500260: GigabitEthernet8/0/0-output
GigabitEthernet8/0/0.1237
IP4: 00:60:e0:6f:5a:f1 -> 00:60:e0:68:9f:ee 802.1ad vlan 2345 802.1ad vlan 1000
ICMP: 50.0.1.1 -> 50.0.1.2
tos 0x00, ttl 64, length 84, checksum 0x1523 dscp CS0 ecn NON_ECN
fragment id 0xff83
ICMP echo_reply checksum 0xaf66 id 5888
07:19:50:500261: GigabitEthernet8/0/0-tx
GigabitEthernet8/0/0 tx queue 1
buffer 0x87aa6: current data 0, length 106, buffer-pool 0, ref-count 1, trace handle 0x1000000
ext-hdr-valid
vlan-2-deep local l2-hdr-offset 0 l3-hdr-offset 22
PKT MBUF: port 10, nb_segs 1, pkt_len 106
buf_len 2176, data_len 106, ol_flags 0x180, data_off 128, phys_addr 0x8efeaa00
packet_type 0x0 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0
rss 0x0 fdir.hi 0x0 fdir.lo 0x0
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_IP_CKSUM_NONE (0x0090) no IP cksum of RX pkt.
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_NONE (0x0108) no L4 cksum of RX pkt.
IP4: 00:60:e0:6f:5a:f1 -> 00:60:e0:68:9f:ee 802.1ad vlan 2345 802.1ad vlan 1000
ICMP: 50.0.1.1 -> 50.0.1.2
tos 0x00, ttl 64, length 84, checksum 0x1523 dscp CS0 ecn NON_ECN
fragment id 0xff83
ICMP echo_reply checksum 0xaf66 id 5888
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