Cisco 10000-2P2-2DC Software Guide - Page 182
Configuring Sessions Per Tunnel Limiting in the RADIUS Service Profile, VPDN IP Addresses
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Layer 2 Access Concentrator Chapter 5 Configuring the Layer 2 Tunnel Protocol Access Concentrator and Network Server Configuring Sessions Per Tunnel Limiting in the RADIUS Service Profile To use a RADIUS server to limit the number of sessions per tunnel, enter the following Cisco-AVpair attributes in the RADIUS service profile: • vpdn:ip-addresses • vpdn:ip-address-limits Note You can configure the RADIUS server or the LAC to limit the number of sessions per tunnel. For information on using the LAC for sessions per tunnel limiting, see the "Configuring Sessions Per Tunnel Limiting on the LAC" section on page 5-12. VPDN IP Addresses The vpdn:ip-addresses attribute specifies the IP addresses of the LNS devices to receive the L2TP connections. It has the following syntax: Cisco-AVpair = "vpdn:ip-addresses=address1[address2][address3]..." The address argument is the IP address of the LNS. The , (comma) and (space) arguments select load sharing among IP addresses. The / (slash) argument groups IP addresses on the left side in higher priority than the right side. Example 5-10 VPDN IP Addresses-RADIUS Freeware Format In the following example, the LAC sends the: • First PPP session through a tunnel to 10.16.1.1 • Second PPP session to 10.16.2.2 • Third PPP session to 10.16.3.3 • Fourth PPP session to 10.16.1.1 If the LAC fails to establish a tunnel with any of the IP addresses in the first group, it attempts to connect to the IP addresses in the second group (10.16.4.4 and 10.16.5.5). Cisco-AVpair="vpdn:ip-addresses=10.16.1.1,10.16.2.2,10.16.3.3/10.16.4.4,10.16.5.5" VPDN IP Address Limits The vpdn:ip-address-limits attribute specifies the maximum number of sessions in each tunnel to the IP addresses listed with the attribute. It has the following syntax: Cisco-AVpair = "vpdn:ip-address-limits=limit1[limit2][limit3]..." The limit argument is the maximum number of sessions per tunnel to the corresponding IP address. Example 5-11 VPDN IP Address Limits-RADIUS Freeware Format Cisco-AVpair="vpdn:ip-address-limits=10 20 30 40 50 " .1.1.1,10.2.2.2,10.3.3.3/10.4.4.4,10.5.5.5" Note You must enter a space between the final limit entry and the end quotation marks. 5-16 Cisco 10000 Series Router Software Configuration Guide OL-2226-23
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