Silver Peak SD-WAN Deployment Guide

In-Line Bridge vs In-Line Router

In-line mode basically behaves the same in either Bridge or Router ModeOut-of-path deployment, where data traffic is redirected by using policy-based routing (PBR), Web Cache Coordination Protocol (WCCP), or Virtual Router Redundancy Protocol (VRRP). with the following differences.

• In-Line Bridge Mode is simpler and easier to set up.
  • Requires mgmt0.
  • No Ethernet LANLocal Area Network. switchA network device that filters and forwards frames based on the destination address of each frame. The switch operates at Layer-2 (data link layer) of the Open System Interconnection (OSI) model. or WANWide Area Network router configuration changes are required. All data flows through the appliance, no redirection is needed.
  • Connects (bridges) two halves of a single subnetA portion of a network that shares a common address component. On TCP/IP networks, subnets are defined as all devices whose IP addresses have the same prefix. For example, all devices with IP addresses that start with 100.100.100. would be part of the same subnet. Dividing a network into subnets is useful for both security and performance reasons. IP networks are divided using a subnet mask..
  • Data Path addresses are not assigned to specific WANWide Area Network or LANLocal Area Network. interfaces. Multicast traffic is bridged as pass-through.
  • Pass-through traffic is automatically forwarded between LANLocal Area Network./WANWide Area Network pairs.
• In-Line Router ModeOut-of-path deployment, where data traffic is redirected by using policy-based routing (PBR), Web Cache Coordination Protocol (WCCP), or Virtual Router Redundancy Protocol (VRRP). works for larger, complex networks and is more flexible.
  • Needs at least two interfaces. Up to 6 are supported.
  • Connects to a different subnetA portion of a network that shares a common address component. On TCP/IP networks, subnets are defined as all devices whose IP addresses have the same prefix. For example, all devices with IP addresses that start with 100.100.100. would be part of the same subnet. Dividing a network into subnets is useful for both security and performance reasons. IP networks are divided using a subnet mask. on each interface.
  • Data Path addresses are assigned to each LANLocal Area Network. or WANWide Area Network interface. Multicast Traffic is dropped.
  • Pass-through traffic is forwarded between all interfaces if the destination subnetA portion of a network that shares a common address component. On TCP/IP networks, subnets are defined as all devices whose IP addresses have the same prefix. For example, all devices with IP addresses that start with 100.100.100. would be part of the same subnet. Dividing a network into subnets is useful for both security and performance reasons. IP networks are divided using a subnet mask. is known.
  • When the destination subnetA portion of a network that shares a common address component. On TCP/IP networks, subnets are defined as all devices whose IP addresses have the same prefix. For example, all devices with IP addresses that start with 100.100.100. would be part of the same subnet. Dividing a network into subnets is useful for both security and performance reasons. IP networks are divided using a subnet mask. is not known:
    • LANLocal Area Network. è WANWide Area Network goes to the first WANWide Area Network interface next hop.
    • WANWide Area Network è LANLocal Area Network. goes to the first LANLocal Area Network. interface next hop (if a next hop has been designated).