刘倩,某局点S6800与服务器互联端口lldp不显示system name
组网及说明
组网不涉及
S6800直连服务器
设备型号：S6800
告警信息
不涉及
问题描述
交换机和服务器互联的端口查看LLDP邻居关系时只显示MAC地址不显示对端的system name
过程分析
查看设备上lldp邻居不显示system name
<LFRZ>dis lldp nei list
Chassis ID : * -- -- Nearest nontpmr bridge neighbor
# -- -- Nearest customer bridge neighbor [19:46:26:670] Default -- -- Nearest bridge neighbor
Local Interface Chassis ID Port ID System Name
XGE1/0/1 ac1f-6b33-9de2 ac1f-6b33-9232 -
抓包确认对端服务器发过来的lldp博文是有携带system name字段过来的
在交换机上debug和实际抓包对比来看，报文有差异，实际交换机上解析出的lldp报文并没有包含system 那么字段
*Mar 4 10:27:44:760 2020 HEZD-04-4A01-ASW-H6900-01U41 LLDP/7/Packet received:
Interface Ten-GigabitEthernet1/0/1 nearest-bridge; Length is 196.
Chassis type : Locally assigned
Chassis ID : 37383638-3330-4E43-3739-333030434C30
Port ID type : Interface name
Port ID : Embedded ALOM, Port 1
Time to live : 121
Port description : NIC 10/40Gb QSFP
System description :
ProLiant DL380 Gen10
Management address type : IPv4
Management address : 10.253.212.83
Management address interface type : Unknown
Management address interface ID : Unknown
Management address OID : 0
Management address type : All802
Management address : 08f1-eaf2-5236
Management address interface type : Unknown
Management address interface ID : Unknown
Management address OID : 0
DCBX Control info:
Oper version : Ver 1.01
正常应该包含如下字段
*Mar 4 10:27:45:837 2020 HEZD-04-4A01-ASW-H6900-01U41 LLDP/7/Packet sent:
Interface Ten-GigabitEthernet1/0/1 nearest-bridge; Length is 344.
Chassis type : MAC address
Chassis ID : 542b-de4f-51f8
Port ID type : Interface name
Port ID : Ten-GigabitEthernet1/0/1
Time to live : 121
Port description : Ten-GigabitEthernet1/0/1 Interface
System name : HEZD-04-4A01-ASW-H6900-01U41
System description :
最终确认是 服务器侧网卡自动发送LLDP导致，进而导致我司交换机没有学到操作系统发出的LLDP报文
解决方法
可按照如下案例关闭网卡自动发送lldp
如何在Redhat下关闭HPE 560SFP+网卡的LLDP - 知了社区 (h3c.com)
