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Configuring MPLS/VPN Support
How to Remove All PE Routers
Step 1
From the SCE(config if)# prompt, type no MPLS VPN PE-Database and press Enter.
Removes all configured PE routers.
How to Remove a Specified Interface from a PE Router
Step 1
From the SCE(config if)# prompt, type no MPLS VPN PE-ID pe-id interface-ip-address interface-ip
and press Enter.
Removes the specified interface from the PE router definition. The PE router itself is not removed.
Configuring the MAC Resolver
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About the MAC Resolver
The MAC resolver allows the SCOS to find the MAC address associated with a specific IP address. The
MAC resolver must be configured when the SCE platform operates in MPLS/VPN mode, to translate the
IP addresses of the provider edge router interfaces to their respective MAC addresses.
The MPLS/VPN mode needs the MAC resolver, as opposed to the standard ARP protocol, because ARP
is used by the management interface, while MPLS/VPN uses the traffic interfaces of the SCE platform,
which ARP does not include.
The MAC resolver database holds the IP addresses registered by the clients to be resolved. The IP
addresses of the routers are added to and removed from the database in either of two modes:
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Cisco SCE 2000 and SCE 1000 Software Configuration Guide
13-14
About the MAC Resolver, page 13-14
Options, page 13-15
How to Add a Static IP Address, page 13-15
How to Remove a Static IP Address, page 13-15
Dynamic mode (default)
In this mode, the system listens to ARP messages of the configured PE interfaces, and this way it
stays updated with their MAC addresses. There is no configuration required when operating in
dynamic mode.
Benefit: it works even if the MAC address of the PE interface changes.
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Drawback: depending on the specific network topology, the MAC resolution convergence time may
be undesirably long.
Chapter 13
MPLS/VPN Support
OL-7827-12
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