Chapter 5: Layer 3 Interface Configuration 79
Section 5-4
FlexWAN module can accept up to two Cisco 7200 or Cisco 7500 WAN port adapters,
which deliver WAN consolidation and extend QoS and traffic management capabilities
over WAN segments. The Enhanced FlexWAN module supports ATM and Packet over
SONET (POS) OC-3 links and channelized, multichannel, and clear channel port adapters
at speeds from T1/E1 to T3/E3. The Enhanced FlexWAN does require that an MSFC be
installed into the switch before it can operate. The following steps describe the process
for configuring the Enhanced FlexWAN interfaces.
Note You can find a list of supported port adapters for the Enhanced Flexwan module at
the following site (Cisco.com login required):
http://www.cisco.com/en/US/partner/products/hw/modules/ps4835/products_data_sheet0
9186a00801df1d9.html
1. Configure the WAN interface:
(global) interface type slot/bay/number
In global configuration mode, use this command to access the WAN interface. The
type option specifies the type of WAN interface (for example, serial, hssi, pos, or
atm). The slot indicates the slot in the switch chassis, the bay is the bay number on
the enhanced FlexWAN card (bays are numbered 0 to 1 from left to right), and inter-
face is the number on the port adapter (interface numbers start at 0).
2. Assign a protocol address to the interface:
(interface) ip address address netmask
Use the appropriate command to configure the Layer 3 interface with network
addressing. The example here shows configuration of an IP address.
3. Enable the interface:
(interface) no shutdown
The default status of many Layer 3 interfaces is shutdown, which is a disabled state.
To ensure that the interface is operational, enable the interface with the command no
shutdown.
Configuring a SPA Interface Processor (SIP) / Shared Port Adapter
(SPA) WAN Interface
The SIP module is a carrier card that inserts into a switch slot like a line card. It provides
no network connectivity on its own. A SIP contains one or more subslots, which contain
one or more SPAs. The SPA provides interface ports for network connectivity. SIPs and
SPAs requires a 6500 series switch with a Supervisor 720 or Supervisor 32. Each port on
this blade acts as a Layer 3 port and can be configured with an IP address only, with a
variety of traffic-control features. To provide basic configuration for these interfaces, use
the following steps:
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