Aaa For Mpls L3Vpns; Protocols And Standards - HP 6125G Configuration Manual

In addition, AAA provides the following services for login users to enhance switch security:
• Command authorization—Enables the NAS to defer to the authorization server to determine
whether a command entered by a login user is permitted for the user, making sure that login users
execute only commands they are authorized to execute. For more information about command
authorization, see Fundamentals Configuration Guide.
Command accounting—Allows the accounting server to record all commands executed on the
•
switch or all authorized commands successfully executed. For more information about command
accounting, see Fundamentals Configuration Guide.
Level switching authentication—Allows the authentication server to authenticate users who perform
•
privilege level switching. As long as passing level switching authentication, users can switch their
user privilege levels, without logging out and disconnecting current connections. For more
information about user privilege level switching, see Fundamentals Configuration Guide.
You can configure different authentication, authorization, and accounting methods for different types of
users in a domain. See

AAA for MPLS L3VPNs

In an MPLS L3VPN scenario where clients in different VPNs are centrally authenticated, you can deploy
AAA across VPNs to enable forwarding RADIUS and HWTACACS packets across MPLS VPNs. With the
AAA across VPNs feature, the PE at the left side of the MPLS backbone serves as a NAS and
transparently delivers the AAA packets of private users in VPN 1 and VPN 2 to the AAA servers in VPN
3 for centralized authentication, as shown in
VPNs do not affect each other.
Figure 8 Network diagram
VPN 1
Host
VPN 2
Host

Protocols and standards

The following protocols and standards are related to AAA, RADIUS, and HWTACACS:
• RFC 2865, Remote Authentication Dial In User Service (RADIUS)
RFC 2866, RADIUS Accounting
•
RFC 2867, RADIUS Accounting Modifications for Tunnel Protocol Support
•
RFC 2868, RADIUS Attributes for Tunnel Protocol Support
•
RFC 2869, RADIUS Extensions
•
• RFC 1492, An Access Control Protocol, Sometimes Called TACACS
"Configuring AAA methods for ISP
CE
NAS
PE
CE
domains."
Figure 8. Authentication packets of private users in different
MPLS backbone
PE
P
10
VPN 3
RADIUS
server
CE
HWTACACS
server