Hi Pablo,
My configuration and the trace info is shown below:
VPP1：
create host-interface name eth0 mac 00:0c:29:4d:af:8d
create host-interface name eth4 mac 00:0c:29:4d:af:b5
set interface state host-eth0 up
set interface state host-eth4 up
enable ip6 interface host-eth0
set interface ip address host-eth0 a::1/64
enable ip6 interface host-eth4
set interface ip address host-eth4 2001::1/64
create loopback interface instance 0
set interface state loop0 up
set interface ip address loop0 1::1/128
ip route add 2::2/128 via ip6-address a::2 host-eth0
ip route add 3::3/128 via ip6-address a::2 host-eth0
ip route add b::1/64 via ip6-address a::2 host-eth0
set sr encaps source addr 1::1
sr policy add bsid 1::1:999 next 2::2 next 3::3
sr steer l3 2003::1/64 via sr policy bsid 1::1:999
trace:
02:01:10:720008: af-packet-input
af_packet: hw_if_index 3 next-index 4
tpacket2_hdr:
status 0x20000001 len 98 snaplen 98 mac 66 net 80
sec 0x5a571037 nsec 0x28091fb7 vlan 0
02:01:10:720040: ethernet-input
IP6: 00:22:12:66:00:33 -> 00:0c:29:4d:af:b5
02:01:10:720068: ip6-input
ICMP6: 2001::5 -> 2003::5
tos 0x00, flow label 0x0, hop limit 64, payload length 44
ICMP echo_request checksum 0xa6e8
02:01:10:720075: ip6-lookup
fib 0 dpo-idx 35 flow hash: 0x00000000
ICMP6: 2001::5 -> 2003::5
tos 0x00, flow label 0x0, hop limit 64, payload length 44
ICMP echo_request checksum 0xa6e8
02:01:10:720085: ip6-load-balance
fib 0 dpo-idx 35 flow hash: 0x00000000
ICMP6: 2001::5 -> 2003::5
tos 0x00, flow label 0x0, hop limit 64, payload length 44
ICMP echo_request checksum 0xa6e8
02:01:10:720089: sr-pl-rewrite-encaps
SR-policy-rewrite: src 1::1 dst 2::2
02:01:10:720096: ip6-lookup
fib 0 dpo-idx 9 flow hash: 0x00000000
IPV6_ROUTE: 1::1 -> 2::2
tos 0x00, flow label 0x0, hop limit 64, payload length 140
02:01:10:720097: ip6-rewrite
tx_sw_if_index 1 adj-idx 9 : ipv6 via a::2 host-eth0:
000c29198e58000c294daf8d86dd flow hash: 0x00000000
00000000: 000c29198e58000c294daf8d86dd60000000008c2b3f00010000000000000000
00000020: 0000000000010002000000000000000000000000000229060402020000002003
00000040: 0000000000000000000000000005000300000000000000000000000000030002
00000060: 000000000000000000000000000260000000002c3a3f200100000000
02:01:10:720103: host-eth0-output
host-eth0
IP6: 00:0c:29:4d:af:8d -> 00:0c:29:19:8e:58
IPV6_ROUTE: 1::1 -> 2::2
tos 0x00, flow label 0x0, hop limit 63, payload length 140
VPP2：
create host-interface name eth0 mac 00:0c:29:19:8e:58
create host-interface name eth2 mac 00:0c:29:19:8e:6c
set interface state host-eth0 up
set interface state host-eth2 up
enable ip6 interface host-eth0
enable ip6 interface host-eth2
set interface ip address host-eth0 a::2/64
set interface ip address host-eth2 b::1/64
create loopback interface instance 0
set interface state loop0 up
set interface ip address loop0 2::2/128
ip route add 1::1/128 via ip6-address a::1 host-eth0
ip route add 3::3/128 via ip6-address b::2 host-eth2
sr localsid address 2::2 behavior end
trace:
00:08:01:715943: af-packet-input
af_packet: hw_if_index 1 next-index 4
tpacket2_hdr:
status 0x20000001 len 178 snaplen 178 mac 66 net 80
sec 0x5a571fb9 nsec 0x2c338c0a vlan 0
00:08:01:715969: ethernet-input
IP6: 00:0c:29:4d:af:8d -> 00:0c:29:19:8e:58
00:08:01:716017: ip6-input
IPV6_ROUTE: 1::1 -> 2::2
tos 0x00, flow label 0x0, hop limit 63, payload length 124
00:08:01:716022: ip6-lookup
fib 0 dpo-idx 13 flow hash: 0x00000000
IPV6_ROUTE: 1::1 -> 2::2
tos 0x00, flow label 0x0, hop limit 63, payload length 124
00:08:01:716030: ip6-local
IPV6_ROUTE: 1::1 -> 2::2
tos 0x00, flow label 0x0, hop limit 63, payload length 124
00:08:01:716037: ip6-punt
IPV6_ROUTE: 1::1 -> 2::2
tos 0x00, flow label 0x0, hop limit 63, payload length 124
00:08:01:716044: error-punt
ip6-input: unknown ip protocol
VPP3：
create host-interface name eth2 mac 00:0c:29:a6:67:7c
create host-interface name eth5 mac 00:0c:29:a6:67:9a
set interface state host-eth2 up
set interface state host-eth5 up
enable ip6 interface host-eth2
enable ip6 interface host-eth5
set interface ip address host-eth2 b::2/64
set interface ip address host-eth5 2003::1/64
create loopback interface instance 0
set interface state loop0 up
set interface ip address loop0 3::3/128
ip route add 2::2/128 via ip6-address b::1 host-eth2
ip route add 1::1/128 via ip6-address b::1 host-eth2
ip route add a::1/64 via ip6-address b::1 host-eth2
Thanks,
Xyxue
From: Pablo Camarillo (pcamaril)
Date: 2018-01-12 15:56
To: 薛欣颖; [email protected]
Subject: Re: [vpp-dev] problem in SRV6
Hi Xyxue,
What is your entire config at VPP2? Looks like a misconfiguration in VPP2.
Thanks,
Pablo.
From: <[email protected]> on behalf of 薛欣颖 <[email protected]>
Date: Friday, 12 January 2018 at 02:04
To: "[email protected]" <[email protected]>
Subject: [vpp-dev] problem in SRV6
Hi guys,
I'm testing SRV6 ,there is a problem: the packet was dropped in the vpp2. More
info and the configuration is shown below:
TC1-VPP1-VPP2-VPP3-TC2
VPP1:
the host-eth1、host-eth2 ipv6 address 1::1 、 2::2, create a loop int 3::3 , add
the static routing.
set sr encaps source addr 1::1
sr policy add bsid 1::1:999 next 2::2 next 3::3
sr steer l3 2003::1/64 via sr policy bsid 1::1:999
VPP# show sr policies
SR policies:
[0].- BSID: 1::1:999
Behavior: Encapsulation
Type: Default
FIB table: 0
Segment Lists:
[0].- < 2::2, 3::3 > weight: 1
The packet DIP = 2003::5 could match the sr, the trace info is correct.
VPP2:
sr localsid address 2::2 behavior end
trace info:
00:08:01:715943: af-packet-input
af_packet: hw_if_index 1 next-index 4
tpacket2_hdr:
status 0x20000001 len 178 snaplen 178 mac 66 net 80
sec 0x5a571fb9 nsec 0x2c338c0a vlan 0
00:08:01:715969: ethernet-input
IP6: 00:0c:29:4d:af:8d -> 00:0c:29:19:8e:58
00:08:01:716017: ip6-input
IPV6_ROUTE: 1::1 -> 2::2
tos 0x00, flow label 0x0, hop limit 63, payload length 124
00:08:01:716022: ip6-lookup
fib 0 dpo-idx 13 flow hash: 0x00000000
IPV6_ROUTE: 1::1 -> 2::2
tos 0x00, flow label 0x0, hop limit 63, payload length 124
00:08:01:716030: ip6-local
IPV6_ROUTE: 1::1 -> 2::2
tos 0x00, flow label 0x0, hop limit 63, payload length 124
00:08:01:716037: ip6-punt
IPV6_ROUTE: 1::1 -> 2::2
tos 0x00, flow label 0x0, hop limit 63, payload length 124
00:08:01:716044: error-punt
ip6-input: unknown ip protocol
Is there any problem in my configuration?
Thanks,
Xyxue
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