设备型号:S5570S-54S-EI
设备版本:Release 1115
组网:不涉及
现场反馈设备做802.1x认证和mac认证。在终端802.1x认证成功后,断开重连认证慢
因为客户想模拟那种随时可以断开,随时登录的一个场景,进行重复断开重连,发现这个问题
1、 查看接口配置如下:
#
interface GigabitEthernet1/0/37
port link-mode bridge
port access vlan 1234
stp edged-port
dot1x
undo dot1x handshake
dot1x mandatory-domain domain-ac
mac-authentication
mac-authentication domain domain-ac
#
2、在测试过程中发现,在断开后,重连时设备没有发送send报文,一直到最后认证成功才有send报文,正常认证报文如下:
*Feb 4 02:13:36:519 2013 QL-JRP-5-30 DOT1X/7/EVENT: Sending EAP packet: Identifier=1, type=1.
*Feb 4 02:13:36:520 2013 QL-JRP-5-30 DOT1X/7/PACKET:
Transmitted a packet on interface GigabitEthernet1/0/37.
Destination MAC address=x-x-x
Source MAC address=y-y-y
VLAN ID=1234
MAC frame type=888e
Protocol version ID=1
Packet type=0(EAP-Packet)
Packet length=5
-----Packet body-----
Code=1(Request)
Identifier=1
Length=5
Code type=1(Identity)
*Feb 4 02:13:36:823 2013 QL-JRP-5-30 DOT1X/7/PACKET:
Received a packet on interface GigabitEthernet1/0/37.
Destination MAC address=y-y-y
Source MAC address=x-x-x
MAC frame type=888e
Protocol version ID=1
Packet type=0(EAP-Packet)
Packet length=27
-----Packet body-----
Code=2(Response)
Identifier=1
Length=27
Code type=1(Identity)
*Feb 4 02:13:36:823 2013 QL-JRP-5-30 DOT1X/7/EVENT: BE is in Response state: UserMAC=x-x-x, VLANID=1234, Interface=GigabitEthernet1/0/37.
*Feb 4 02:13:36:823 2013 QL-JRP-5-30 DOT1X/7/EVENT: Successfully created server timeout timer: UserMAC=x-x-x, VLANID=1234, Interface=GigabitEthernet1/0/37.
后经产品线分析:终端点击dot1x下线后,设备收到对应终端报文就会进行mac认证,而mac认证服务器上未放通对应的mac认证,因此该终端由于mac认证失败而静默1min;在这1min内再次点击进行1x认证,设备就会做丢弃处理,因此1x认证不通过
该问题非故障问题,可以把mac认证失败的静默时间调整短一些进行规避
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