The bypass cards have two failure modes: Fail-to-wire and fail-to-block.
During the physical installation of a Steelhead appliance in a fail-to-wire scenario the following scenarios should be checked:
When the Steelhead appliance is turned off, the LAN switch and WAN router should negotiate an Ethernet link and all traffic should flow through, unless fail-to-block has been configured.
When the Steelhead appliance is turned on, configured and the optimization service is running, the LAN switch and WAN router should negotiate an Ethernet link towards the Steelhead LAN and WAN interfaces and all traffic should flow through.
Now that the Steelhead appliance is working properly, check again
that the fail-to-wire scenario works: Shutdown the Steelhead appliance
with the command
reload halt
.
The traffic should flow through.
Afterwards, every time a device on the WAN or on the LAN side of the Steelhead appliance is replaced or when the interface configuration of the Steelhead appliance or one of the connecting devices is changed, this fail-to-wire implementation should be checked again.
The following list is a good order to install new Steelhead appliances in an in-path environment:
Without being connected to the network, turn on the Steelhead appliance and configure the IP addresses and routing details on the primary interface and in-path interfaces. In the in-path configuration, disable the Link State Propagation feature. Enable in-path support and enable optimization on the in-path interfaces.
Figure 4.1. Disable LSP during installation of a new Steelhead appliance
SH (config) # interface inpath0_0 ip address 10.0.1.6 /24 SH (config) # ip in-path-gateway inpath0_0 "10.0.1.9" SH (config) # in-path enable SH (config) # in-path interface inpath0_0 enable SH (config) # no in-path lsp enable
Save the configuration with the command
write memory
and turn off the Steelhead appliance with the command
reload halt
.
Connect the cables to the LAN and WAN interfaces and confirm that the WAN router and LAN switch have an Ethernet link established.
Turn on the Steelhead appliance and wait for the optimization service to be initialized and started.
Confirm that the LAN and WAN interfaces on the Steelhead appliance
have an Ethernet link established with the commands
show interface lan0_0 brief
and
show interface wan0_0 brief
.
In the in-path configuration, enable the Link State Propagation
feature with the configuration command
in-path lsp enable
and save the configuration with the command
write memory
.