Yes, the packet trace is confusing to me as well.
When it is in L3 mode, we have:
Memif-input => bond-input => ethernet-input => arp-input.
When it is in L2 mode, we have:
Memif-input => ethernet-input => arp-input
Two items come to mind for L2 mode:
1. Why did it not go through bond-input between memif-input and
ethernet-input?
2. If the interface is really in l2-mode, ethernet-input should send the
packet to l2-input and not arp-input.
I wonder if something is not configured properly or if the packet trace is not
for a member of the bonded interface.
Regards,
John
From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of steven luong via
Lists.Fd.Io
Sent: Thursday, October 25, 2018 10:12 PM
To: saint_...@aliyun.com
Cc: vpp-dev@lists.fd.io
Subject: Re: [vpp-dev] Problem switching a bonded interface from L2 to L3 mode
Your trace and explanation of the problem are not consistent. You stated there
is a problem after the bonded interface switches from L2 to L3. Yet your trace
shows when the interface is in L3 mode, it is working fine. When it is in L2
mode, it complains the interface is not IP enabled. I can’t really recreate
your problem to see what is going on because I don’t have your whole
configuration from both sides and where you send the ping from. Sure, we can
invoke ethernet_set_rx_redirect (vnm, sif_hw, 0) for all interfaces when we
remove the last L2 interface on the bond. But I don’t think it is going to help
you. For your benefit of the doubt, you can try adding the else what you
suspect may be the problem.
else if ((bif_hw->l2_if_count == 0) && (l2_if_adjust == -1))
{
/* Just removed last L2 subinterface on this port */
vec_foreach (sw_if_index, bif->slaves)
{
sif_hw = vnet_get_sup_hw_interface (vnm, *sw_if_index);
/* Allow ip packets to go directly to ip4-input etc */
ethernet_set_rx_redirect (vnm, sif_hw, 0);
}
}
when the bonding is in l2 mode, the packet trace below:
packet:
00:00:00:000000: memif-input
memif: hw_if_index 3 next-index 4
slot: ring 0
00:00:00:000000: ethernet-input
ARP: 00:00:5e:22:22:2c -> ff:ff:ff:ff:ff:ff 802.1q vlan 0
00:00:00:000000: arp-input
request, type ethernet/IP4, address size 6/4
00:00:5e:22:22:2c/110.0.0.2 -> 00:00:00:00:00:00/110.0.0.1
00:00:00:000000: error-drop
arp-input: Interface is not IP enabled
Steven
From: <vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>> on behalf of "saint_sun
孙 via Lists.Fd.Io"
<saint_sun=aliyun....@lists.fd.io<mailto:saint_sun=aliyun....@lists.fd.io>>
Reply-To: "saint_...@aliyun.com<mailto:saint_...@aliyun.com>"
<saint_...@aliyun.com<mailto:saint_...@aliyun.com>>
Date: Thursday, October 25, 2018 at 12:25 AM
To: "Steven Luong (sluong)" <slu...@cisco.com<mailto:slu...@cisco.com>>
Cc: "vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>"
<vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>>
Subject: Re: [vpp-dev] Problem switching a bonded interface from L2 to L3 mode
Hello steven,
I used the native memif to be the member of bonding interface, below is my
configuration:
DBGvpp# create bond mode active-backup
DBGvpp# bond add BondEthernet1 line2
DBGvpp# show bond details
BondEthernet0
mode: active-backup
load balance: l23
number of active slaves: 0
number of slaves: 1
line1
device instance: 0
sw_if_index: 1
hw_if_index: 1
BondEthernet1
mode: active-backup
load balance: l2
number of active slaves: 1
line2
number of slaves: 1
line2
device instance: 1
sw_if_index: 22
hw_if_index: 20
DBGvpp# set interface l2 bridge BondEthernet1 300
DBGvpp# show bridge-domain 300 detail
BD-ID Index BSN Age(min) Learning U-Forwrd UU-Flood Flooding
ARP-Term BVI-Intf
300 4 2 44 on on on on off
N/A
Interface If-idx ISN SHG BVI TxFlood
VLAN-Tag-Rewrite
BondEthernet1 22 3 0 - * none
DBGvpp# set interface l3 BondEthernet0
when the bonding is in l3 mode, the packet trace below:
packet:
00:00:00:000000: memif-input
memif: hw_if_index 3 next-index 7
slot: ring 0
00:00:00:000000: bond-input
src 00:00:5e:22:22:2c, dst ff:ff:ff:ff:ff:ff, line2 -> BondEthernet1
00:00:00:000000: ethernet-input
ARP: 00:00:5e:22:22:2c -> ff:ff:ff:ff:ff:ff 802.1q vlan 0
00:00:00:000000: arp-input
request, type ethernet/IP4, address size 6/4
00:00:5e:22:22:2c/110.0.0.2 -> 00:00:00:00:00:00/110.0.0.1
00:00:00:000000: BondEthernet1-output
BondEthernet1
ARP: 00:00:5e:51:3c:38 -> 00:00:5e:22:22:2c
reply, type ethernet/IP4, address size 6/4
00:00:5e:51:3c:38/110.0.0.1 -> 00:00:5e:22:22:2c/110.0.0.2
when the bonding is in l2 mode, the packet trace below:
packet:
00:00:00:000000: memif-input
memif: hw_if_index 3 next-index 4
slot: ring 0
00:00:00:000000: ethernet-input
ARP: 00:00:5e:22:22:2c -> ff:ff:ff:ff:ff:ff 802.1q vlan 0
00:00:00:000000: arp-input
request, type ethernet/IP4, address size 6/4
00:00:5e:22:22:2c/110.0.0.2 -> 00:00:00:00:00:00/110.0.0.1
00:00:00:000000: error-drop
arp-input: Interface is not IP enabled
The mode switch code of bonding device:
static __clib_unused clib_error_t *
bond_set_l2_mode_function (vnet_main_t * vnm,
struct vnet_hw_interface_t *bif_hw,
i32 l2_if_adjust)
{
bond_if_t *bif;
u32 *sw_if_index;
struct vnet_hw_interface_t *sif_hw;
bif = bond_get_master_by_sw_if_index (bif_hw->sw_if_index);
if (!bif)
return 0;
if ((bif_hw->l2_if_count == 1) && (l2_if_adjust == 1))
{
/* Just added first L2 interface on this port */
vec_foreach (sw_if_index, bif->slaves)
{
sif_hw = vnet_get_sup_hw_interface (vnm, *sw_if_index);
ethernet_set_flags (vnm, sif_hw->hw_if_index,
ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
/* ensure all packets go to ethernet-input */
ethernet_set_rx_redirect (vnm, sif_hw, 1);
}
}
return 0;
}
when I switch the mode of bonding interface to l2,
the function(blue color code above) redirects all the members to ethernet-input
,
but when I switch it back to l3, all the members don't redirect to bond-input.
________________________________
saint_...@aliyun.com<mailto:saint_...@aliyun.com>
From: steven luong via Lists.Fd.Io<mailto:sluong=cisco....@lists.fd.io>
Date: 2018-10-25 12:06
To: saint_...@aliyun.com<mailto:saint_...@aliyun.com>; John Lo
(loj)<mailto:l...@cisco.com>
CC: vpp-dev<mailto:vpp-dev@lists.fd.io>
Subject: Re: [vpp-dev] Problem switching a bonded interface from L2 to L3 mode
Are you using VPP native bonding driver or DPDK bonding driver? How do you
configure the bonding interface? Please include the configuration and process
to recreate the problem.
Steven
From: <vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>> on behalf of "saint_sun
孙 via Lists.Fd.Io"
<saint_sun=aliyun....@lists.fd.io<mailto:saint_sun=aliyun....@lists.fd.io>>
Reply-To: "saint_...@aliyun.com<mailto:saint_...@aliyun.com>"
<saint_...@aliyun.com<mailto:saint_...@aliyun.com>>
Date: Wednesday, October 24, 2018 at 8:07 PM
To: "John Lo (loj)" <l...@cisco.com<mailto:l...@cisco.com>>
Cc: "vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>"
<vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>>
Subject: Re: [vpp-dev] Problem switching a bonded interface from L2 to L3 mode
Ok, I forgot to click the reply-all. who is familiar with the problem I
mentioned below please tell me,thanks!
2018年10月25日 星期四 +0800 10:32 发件人 John Lo (loj)
<l...@cisco.com<mailto:l...@cisco.com>>:
Please include vpp-dev alias on any questions about VPP, instead of unicast an
individual only. Then whoever is familiar with the area you are asking about
may respond. Does anyone know about the potential problem of switching between
L2 and L3 modes on a bonded interface described in this email (I did change the
email subject accordingly)? -John
From: saint_sun 孙 <saint_...@aliyun.com<mailto:saint_...@aliyun.com>>
Sent: Wednesday, October 24, 2018 8:52 PM
To: John Lo (loj) <l...@cisco.com<mailto:l...@cisco.com>>
Subject: Re: RE: RE: [vpp-dev]vlan interface support?
I am very grateful for your help.
And when I test the VLAN, maybe I find a bug that if I switch the mode of the
Bonding interface to L2 and then switch back to L3，the bonding interface can
not work as before.
I have found the error code that is in the mode switch function of bonding
device: when set the mode of bonding interface to l2, all the members of the
bonding interface will be set to l2, but when set the bonding interface back,
all the members do not recover to l3.
At last I have another doubt that when I configure an IP address for an
interface, then I ping the address from VPP, it’s failed, why?should I do other
more settings?
2018年10月15日 星期一 +0800 22:20 发件人 John Lo (loj)
<l...@cisco.com<mailto:l...@cisco.com>>:
If there is a BVI in a BD with sub-interfaces in the same BD which get packets
with VLAN tags, it is best to configure a tag-rewrite operation on the
sub-interfaces to pop their VLAN tags. Then all packets are forwarded in BD
without VLAN tags. The CLI is “set interface l2 tag-rewrite <sub-interface>
pop 1” if the sub-interface has one VLAN tag. –John
From: saint_sun 孙 <saint_...@aliyun.com<mailto:saint_...@aliyun.com>>
Sent: Monday, October 15, 2018 2:42 AM
To: John Lo (loj) <l...@cisco.com<mailto:l...@cisco.com>>
Cc: vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>
Subject: Re: RE: [vpp-dev]vlan interface support?
I am very grateful to you for your advice！
I have tested it，But there is something wrong. when I receive an arp or ICMP
packet from a l2 subif that joins to bd 200 and encapsulates vlan 200，the
reply packet that send from the subif does not have the vlan tag 200. Any more
other configurations should I set？
可用于iOS的myMail发送
2018年10月14日 星期日 +0800 04:58 发件人 l...@cisco.com<mailto:l...@cisco.com>
<l...@cisco.com<mailto:l...@cisco.com>>:
The equivalent of VLAN on a switch in VPP is a bridge domain or BD for short.
One can put interfaces or VLAN sub-interfaces in a BD to form a L2 network
among all interfaces in it. One can also create a loopback interface, put it
in a BD as its BVI (Bridge Virtual Interface) and assign IP addresses to it.
Then packet can be IP forwarded into a BD through its BVI.
Following is the VPP CLI sequence to create a loopback (resulting in interface
name loop0), put it in BD 13 as a BVI, and put an IP address on it:
loopback create mac 1a:2b:3c:4d:5e:6f
set interface l2 bridge loop0 13 bvi
set interface state loop0 up
set interface ip address loop0 6.0.0.250/16
Regards,
John
From: vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>
<vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>> On Behalf Of saint_sun ? via
Lists.Fd.Io
Sent: Friday, October 12, 2018 3:52 AM
To: vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>
Cc: vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>
Subject: [vpp-dev]vlan interface support?
I have a question:
Does vpp has the function like the configuration example:
interface f0/1
switchport access vlan 10
Interface vlan 10
ip address 10.0.0.1 255.255.255.0
If vpp has the function, where can I find the command and the source code?
Another question, does vpp support superVLAN?
anyone who knows please tell me, appreciate for your reply very much!
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