Statically Routed T1 Leased Line

Information supplied by ViaNet
ViaNet WAN IP address:
Customer WAN IP address:
WAN IP netmask:
LAN IP allocation:
LAN IP netmask:

Router Config
! Allow use of zero'th subnet
ip subnet-zero
! Disable obsolete IP classful assumptions
ip classless

interface HSSI 0/0/0
  desc T3 to ViaNet PacBell Circuit
  ip address
  no shutdown

interface fastether  0/1/0
  desc Local ethernet LAN
  ip address
  no ip directed-broadcast
  no shutdown

! default route
ip route HSSI 0/0/0

CSU/DSU Config
Your CSU/DSU should be set for the following options:

  • Framing: c-bit
  • Clock Source: line

    Note: Most brands of CSU/DSU's that we've used (Kentrox/Digital Link/ADTRAN) are correctly configured for full T3 (as opposed to fractional T3) use when reset to factory defaults.