routing options] hierarchy levels. This statement enables BGP to accept larger numbers
of Layer 3 VPN BGP updates with unique inner VPN labels. Including the
l3vpn-composite-nexthop statement in the configuration enhances scaling and
convergence performance of PE routers participating in a Layer 3 VPN in a multivendor
environment.
The Junos OS provides the configuration statement memory-enhanced to reallocate
the jtree memory for routes and Layer 3 VPNs. This statement has the following options:
•
route—Include this statement when you want to support larger routing tables (with
more routes) over firewall filters. For example, you can enable this option when you
want to support a large number of routes for Layer 3 VPNs implemented using MPLS.
However, we recommend enabling this option only if you do not have a very large
firewall configuration.
To allocate more memory for routing tables, include the route statement at the [edit
chassis memory-enhanced] hierarchy level:
[edit chassis memory-enhanced]
route;
•
vpn-label—Include this statement when you want to enhance memory to support a
larger number of Layer 3 VPN labels accepted by the l3vpn-composite-nexhop
statement.
To allocate more memory for Layer 3 VPN labels, include the vpn-label statement
at the [edit chassis memory-enhanced] hierarchy level:
[edit chassis memory-enhanced]
vpn-label;
NOTE:
•
With Junos Release 10.4, the memory-enhanced route statement at the
[edit chassis] hierarchy level replaces the route-memory-enhanced
statement at the [edit chassis] hierarchy level.
[VPNs, System Basics]
•
Egress protection LSPs—If there is a link or node failure in the core network, a protection
mechanism such as MPLS fast reroute can be triggered on the transport LSPs between
the PE routers to repair the connection within tens of milliseconds. An egress protection
LSP addresses the problem of when a link failure occurs at the edge of the network
(for example, a link failure between a PE router and a CE device).
35Copyright © 2010, Juniper Networks, Inc.
New Features in Junos OS Release 10.4 for M Series, MX Series, and T Series Routers
To Next Page
Loading...