Specifications

Cisco ONS 15327 Product Overview
Network Management
34
Cisco ONS 15327 Product Overview, R3.3
June 2002
and puts them together to create a topology of the entire network or area. From
this database, the router calculates a routing table by constructing a shortest path
tree. Routes are continuously recalculated to capture ongoing topology changes.
You can enable OSPF on the ONS 15327s so that the ONS 15327 topology is sent
to OSPF routers on a LAN. Advertising the ONS 15327 network topology to LAN
routers eliminates the need to manually provision static routes for ONS 15327
subnetworks.
Static Route Provisioning
The ONS 15327 uses CTC to provision static network routes in ONS 15327
network elements (NEs). Static routes make it possible to have multiple CTC
sessions, with different destination IP addresses, on a network of ONS 15327s
that all lie on the same subnet. For example, a Network Operations Center (NOC)
can remotely monitor an ONS 15327 through CTC at the same time that an on-site
employee is logged into an ONS 15327 on the network with a separate CTC
session. Static routes also allow workstations to connect to ONS 15327s through
routers.
DCC Tunneling
You can tunnel third-party SONET equipment DCCs across ONS 15327 networks. A
DCC tunnel is a series of connection points that map a third-party equipment DCC to
ONS 15327 DCCs. A DCC tunnel end point is defined by the slot, port, and DCC type.
To create a DCC tunnel, you connect the tunnel end points from one ONS 15327
optical port to another. DCC traffic is forwarded transparently, byte-for-byte, across
the ONS 15327 network.