Multi-Vrf Ce Configuration Guidelines - Cisco Catalyst 9500 series Configuration Manual

Multi-VRF CE Configuration Guidelines

Multi-VRF CE Configuration Guidelines
Note To use multi-VRF CE, you must have the Network Advantage license enabled on your switch.
• A switch with multi-VRF CE is shared by multiple customers, and each customer has its own routing
• Because customers use different VRF tables, the same IP addresses can be reused. Overlapped IP
• Multi-VRF CE lets multiple customers share the same physical link between the PE and the CE.
• Multi-VRF CE does not support all MPLS-VRF functionality. It does not support label exchange,
• For the PE router, there is no difference between using multi-VRF CE or using multiple CEs. In
• The switch supports configuring VRF by using physical ports, VLAN SVIs, or a combination of
• A customer can use multiple VLANs as long as they do not overlap with those of other customers.
• The switch supports one global network and up to 26 VRFs.
• Most routing protocols (BGP, OSPF, RIP, and static routing) can be used between the CE and the
• Multi-VRF CE does not affect the packet switching rate.
• VPN multicast is not supported.
• You can enable VRF on a private VLAN, and the reverse.
• You cannot enable VRF when policy-based routing (PBR) is enabled on an interface, and the reverse.
• You cannot enable VRF when Web Cache Communication Protocol (WCCP) is enabled on an
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table.
addresses are allowed in different VPNs.
Trunk ports with multiple VLANs separate packets among customers. Each customer has its own
VLAN.
LDP adjacency, or labeled packets.
Figure 41-6, multiple virtual Layer 3 interfaces are connected to the multi-VRF CE device.
both. The SVIs can be connected through an access port or a trunk port.
A customer's VLANs are mapped to a specific routing table ID that is used to identify the appropriate
routing tables stored on the switch.
PE. However, we recommend using external BGP (EBGP) for these reasons:
◦ BGP does not require multiple algorithms to communicate with multiple CEs.
◦ BGP is designed for passing routing information between systems run by different
administrations.
◦ BGP makes it easy to pass attributes of the routes to the CE.
interface, and the reverse.
Configuring IP Unicast Routing