Feature history for ra to mpls vpn, Restrictions for ra to mpls vpn – Cisco 10000 User Manual
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Cisco 10000 Series Router Software Configuration Guide
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Chapter 3 Configuring Remote Access to MPLS VPN
Feature History for RA to MPLS VPN
After adding these suboptions to the DHCP relay agent information option, the gateway address changes
to the relay agent’s outgoing interface on the DHCP server side. The DHCP server uses this gateway
address to send reply packets back to the relay agent. The relay agent then removes the relay agent
information options and forwards the packets to the DHCP client on the correct VPN.
Note
For more information, see the DHCP Relay Support for MPLS VPN Suboptions, Release 12.2(4)B
feature module, located at the following URL.
Feature History for RA to MPLS VPN
Restrictions for RA to MPLS VPN
The RA to MPLS VPN feature has the following restrictions:
•
When BGP aggregates customer routes, the received packets that match the aggregate route require
an additional feedback in the PXF forwarding engine, which reduces performance.
•
RBE to MPLS VPN does not support MAC-layer access lists; only IP access lists are supported.
•
Before configuring DHCP relay support for MPLS VPN suboptions, you must configure standard
MPLS VPNs. For more information, see the
“Configuring Virtual Private Networks” section on
and the
“Configuring the MPLS Core Network” section on page 3-12
, or see the
Cisco IOS Switching Services Configuration Guide, Release 12.2, located at the following URL
.
•
The VPN ID is not used to control the distribution of routing information or to associate IP addresses
with VPN IDs in routing updates.
Cisco IOS Release
Description
Required PRE
12.2(4)BZ1
This feature was integrated into Cisco IOS Release
12.2(4)BZ1.
PRE1
12.3(7)XI1
This feature was integrated into Cisco IOS Release
12.3(7)XI1.
PRE2
12.2(28)SB
This feature was integrated into Cisco IOS Release
12.2(28)SB.
PRE2