H3C Technologies H3C S3100 Series Switches - Manual (Page 296)

Operation Manual – 802.1x
H3C S3100-52P Ethernet Switch Chapter 2 HABP Configuration
2-1
Chapter 2 HABP Configuration
2.1 Introduction to HABP
With 802.1x enabled, a switch authenticates and then authorizes 802.1x-enabled ports.
Packets can be forwarded only by authorized ports. For ports connected to the switch
and are not authenticated and authorized by 802.1x, their received packets will be
filtered. This means that users cannot manage the attached switches. Huawei
authentication bypass protocol (HABP) is designed to address this problem.
An HABP packet carries the MAC addresses of the attached switches with it. It can
bypass the 802.1x authentications when traveling between HABP-enabled switches,
through which management devices can obtain the MAC addresses of the attached
switches and thus the management of the attached switches is feasible.
HABP is implemented by HABP server and HABP client. Normally, an HABP server
sends HABP request packets regularly to HABP clients to collect the MAC addresses of
the attached switches. HABP clients respond to the HABP request packets and forward
the HABP request packets to lower-level switches. HABP servers usually reside on
management devices and HABP clients usually on attached switches.
For ease of switch management, it is recommended that you enable HABP for
802.1x-enabled switches.
2.2 HABP Server Configuration
With the HABP server launched, a management device sends HABP request packets
regularly to the attached switches to collect their MAC addresses. You need also to
configure the interval on the management device for an HABP server to send HABP
request packets.
Table 2-1
Configure an HABP server
Operation Command Description
Enter system view system-view —
Enable HABP
habp enable
Required
HABP is enabled by default.
Configure the
current switch to
be an HABP server
habp server vlan
vlan-id
Required
By default, a switch operates as an
HABP client after you enable HABP
on the switch. If you want to use the
switch as a management switch, you
need to configure the switch to be an
HABP server.