ZXR10 2900E Series Configuration Guide
Ip source guard is configured on the following port(s):
49
4.27 VBAS Configuration
VBAS Overview
VBAS is not physical equipment but a protocol standard, which is developed by
Guangdong Institute of China Telecom.
VBAS is to solve the problem of wide-band
user identifier. When BAS gets user identifier by inquiring corresponding relationship
between MAC of users dialing to the switch and port, then sends user name, password
and identifier information to RADIUS, it can judge the position of the user.
Layer 2 communication mode is implemented between BAS and switches, that is,
information query and response data packets of VBAS are encapsulated into Ethernet
data frames of layer-2 directly, and use protocol number 0x8200 to identify.
Caution!
Only trust ports can receive VBAS packets and VBAS response packets only can be sent
from trust ports.
Port connecting to user network is called cascade port and port connecting to BAS server
is called trust port. Typical network of VBAS is shown in
Figure 4-30
.
Figure 4-30 VBAS Typical Network
Configuring VBAS
The VBAS configuration includes the following commands:
4-90
SJ-20120409144109-002|2012-07-02(R1.0)
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