Specifications

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CCC for Ethernet 802.1q VLANs is done by setting the encapsulation to VLAN-
CCC on a VLAN basis on a single physical interface. Since Ethernet interfaces in
tagged mode can have multiple sub-interfaces, a sub-interface can be either CCC
or 'normal'. CCC can be configured only when tagging is enabled. When in
normal VLAN mode, all 1024 VLAN IDs can be used but in CCC mode, VLAN IDs
from 0 - 511 are reserved for normal VLANs and 512-1023 are reserved for CCC
VLANs.
3.4.2 Layer 3 IP VPN Strategy
Juniper Networks has a product line that provides high performance routing
to ISPs of all sizes. All products are capable of supporting RFC 2547 P, PE,
and CE routing functions with similar scaling capabilities. However, it is
necessary to position the products for certain applications and markets.
VPNs represent a significant revenue opportunity for ISPs. With 2547,
Juniper Networks can offer the same benefits as any other vendor’s
implementation. The strength and value added features of our products such
as wire rate filtering and QoS for VPNs clearly differentiate our technical and
business propositions.
The Juniper Networks IP VPN strategy includes provisioning and
management for the service providers and for the end users. Without such
tools, ISPs can not deploy VPNs efficiently. As shown by users’ concern over
lack of VPN control, the Juniper Networks provisioning strategy also satisfies
end users’ needs.
3.4.2.1 Product Positioning
The Juniper Networks Internet Backbone Routers, i.e. the M160, M40, and
M20, are designed to build infrastructures across the global ISP market
space.
§ Tier-1 ISPs own and operate private national networks with extensive
national and/or international backbones.
§ Tier-2 ISPs operate smaller backbones within a state/country or among
several adjoining states/countries. They buy Internet connectivity from
one of the tier-1 ISPs and provide Internet access on a regional basis.
Tier-2 ISPs have private backbones and provide high bandwidth, reliable
Internet connectivity to corporate headquarters.
Tier-2 ISPs have POPs to provide access to branch offices, small and
medium businesses (SMBs), and home/telecommuter users. Below tier-2
players are local ISPs who do not own a regional backbone. They may have
a small backbone in a data center with dial-up and routing services to
support SOHOs and telecommuters.
The M160 is optimized for core routing, and it will be positioned for the Tier-1
backbone as a provider router. The M40 and M20 can also act as provider
routers in some networks, however they are likely to be positioned as PE
routers according to the size of the ISP.
In summary :
§ All Juniper Network routers support provider router function.
§ For large networks, M160 and/or M40 will be positioned as provider
routers.
§ For large networks, M40 and M20 will be positioned as provider edge
routers.
Juniper Network’s market has been the tier-1 ISPs, also referred to as
“carrier of the carriers. Juniper Network will continue to expand in this space
with M160 at the core and M20 at the edge.
The ISP market is demanding RFC 2547 support today, however, as ISPs
sort out 2547 deployment, a different set of needs is expected to emerge that
will segment MPLS VPNs into aggregation for the carrier of carriers and
distribution for other ISPs who sell to SMB/enterprises.
VPN Differentiation