我们做特殊的硬件配置,需要大量使用LLDP。我们有几个新的机架服务器,都使用英特尔X710 10 We网卡。自民党突然停止工作。我们的LLDP实现很简单。使用默认的TLVs在TOR (机架顶部)开关上启用LLDP。使用lldpad (CentOS 6.5)在Linux映像上启用LLDP,并使用lldptool提取邻居信息,该信息在过去曾用于数千台机器。只是,对于这些有NIC的机器来说,整件事就停止了。
使用来自交换机和服务器的数据包转储显示,帧被正确地从服务器发送到交换机,相反,交换机正确地从服务器接收帧并将TLV帧发送回服务器。然而,服务器并没有接收到TLVs的交换帧,这让我们感到头脑发热。我们在TOR上放置了使用不同NIC的其他机器,它们得到了预期的LLDP数据。
我问谷歌人..。
根据此链接的说法,这些X710s可能正在运行一个内部的LLDP代理,该代理正在从交换机拦截LLDP帧。我们看到的受影响机器上的固件是这样发生的:
# ethtool -i eth2
driver: i40e
version: 1.3.47
firmware-version: 4.53 0x80001e5d 17.0.10
bus-info: 0000:01:00.2
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes禁用NIC上的内部LLDP代理的方法不起作用。尽管如此,我仍在四处寻找,但我想我有几个选择:
有没有其他人在这些卡上遇到过同样或类似的问题,如果是的话,你是如何解决问题的?
我想,如果我想使用内部代理数据,那么它将通过ethtool或snmp公开,但到目前为止,我还没有找到一种方法来显示这些信息。
提亚
编辑记录,当我尝试在Intel论坛中概述的步骤时,我得到以下输出:
root@host (~)# find /sys/kernel/debug/
/sys/kernel/debug/
root@host (~)# mkdir /sys/kernel/debug/i40e
mkdir: cannot create directory `/sys/kernel/debug/i40e': No such file or directory发布于 2016-05-11 16:30:45
好的。所以谷歌人来找我了。下面是如何解决这个问题的方法。
结果是,为了使用调试文件系统,需要首先安装它。我们使用memfs操作系统在我们正在调优的机器上运行命令,默认情况下我们不挂载调试器。所以这个剧本给了我我需要的答案。
...and为我的用例执行了以下步骤:
root@host (~)# mount -t debugfs none /sys/kernel/debug
root@host (~)# echo lldp stop > /sys/kernel/debug/i40e/0000:01:00.2/command屈服:
root@host (~)# lldptool -i eth2 stat
Total Frames Transmitted = 1834
Total Discarded Frames Received = 0
Total Error Frames Received = 0
Total Frames Received = 1
Total Discarded TLVs = 0
Total Unrecognized TLVs = 0
Total Ageouts = 0
root@host (~)# lldptool -t -n -i eth2
Chassis ID TLV
MAC: ec:13:db:41:63:00
Port ID TLV
Local: 508
Time to Live TLV
120
System Name TLV
sw1
System Description TLV
Juniper Networks, Inc. qfx5100-48s-6q Ethernet Switch, kernel JUNOS 13.2X51-D38, Build date: 2015-06-12 02:33:47 UTC Copyright (c) 1996-2015 Juniper Networks, Inc.
System Capabilities TLV
System capabilities: Bridge, Router
Enabled capabilities: Bridge, Router
Port Description TLV
xe-0/0/0
MAC/PHY Configuration Status TLV
Auto-negotiation not supported and not enabled
PMD auto-negotiation capabilities: 0x8000
MAU type: Unknown [0x0000]
Link Aggregation TLV
Aggregation capable
Currently not aggregated
Aggregated Port ID: 0
Maximum Frame Size TLV
1514
Port VLAN ID TLV
PVID: 1
Unidentified Org Specific TLV
OUI: 0x009069, Subtype: 1, Info: 564633373136303530303437
VLAN Name TLV
VID 1: Name vlan-1
LLDP-MED Capabilities TLV
Device Type: netcon
Capabilities: LLDP-MED, Network Policy, Location Identification, Extended Power via MDI-PSE
End of LLDPDU TLV其他有用的链接:
http://comments.gmane.org/gmane.linux.network/408868 https://communities.intel.com/thread/87759 https://sourceforge.net/p/e1000/mailman/message/34129092/
和我的Google 搜索
发布于 2018-11-07 06:35:46
上
自2017年10月13日以来,英特尔发布了他们的驱动程序2.3.6版本,该版本支持自民党使用私有标志切换处理。这是通过执行以下命令来完成的:
sudo ethtool --set-priv-flags <interface name> disable-fw-lldp on<interface name>。(示例- eth0)下载英特尔的驱动程序i40eX710/ XL710版本2.3.6
安装说明(来源)
1. Move the base driver tar file to the directory of your choice. For
example, use '/home/username/i40e' or '/usr/local/src/i40e'.
2. Untar/unzip the archive, where <x.x.x> is the version number for the
driver tar file:
tar zxf i40e-<x.x.x>.tar.gz
3. Change to the driver src directory, where <x.x.x> is the version number
for the driver tar:
cd i40e-<x.x.x>/src/
4. Compile the driver module:
# make install
The binary will be installed as:
/lib/modules/<KERNEL VERSION>/updates/drivers/net/ethernet/intel/i40e/i40e.ko
The install location listed above is the default location. This may differ
for various Linux distributions.
NOTE:Â To compile the driver on some kernel/arch combinations, a
package with the development version of libelf (e.g. libelf-dev,
libelf-devel, elfutilsl-libelf-devel) may need to be installed.
NOTE: To gather and display additional statistics, use the
I40E_ADD_PROBES pre-processor macro:
#make CFLAGS_EXTRA=-DI40E_ADD_PROBES
Please note that this additional statistics gathering can impact
performance.
5. Load the module using the modprobe command:
modprobe <i40e> [parameter=port1_value,port2_value]
Make sure that any older i40e drivers are removed from the kernel before
loading the new module:
rmmod i40e; modprobe i40e
6. Assign an IP address to the interface by entering the following,
where ethX is the interface name that was shown in dmesg after modprobe:
ip address add <IP_address>/<netmask bits> dev ethX
7. Verify that the interface works. Enter the following, where IP_address
is the IP address for another machine on the same subnet as the interface
that is being tested:
ping <IP_address>这是来自英特尔的承诺的:
出发地: Dave实现私有标志disable LLDP for ethtool来禁用FW对LLDP数据包的处理。这将阻止FW消耗LLDPDU,并使它们被发送到堆栈中。FW还被配置为在链接上应用默认的DCB配置。切换此标志的值也会导致PF重置。禁用FW也将禁用DCBx。
发布于 2016-09-01 13:55:21
创建了一个init脚本,用于在机器启动时执行此操作。任何拉请求都很感激。
如果有人知道如何知道嵌入的lldp代理的状态,我们将不胜感激。这可以用一些更好的退出代码对系统进行调整。
https://serverfault.com/questions/775980
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