HP 600 Series, Services And Applications

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HP Router Probe Implementation
When HP routers boot, they transmit on all IP network interfaces the
unsolicited reply announcing their presence. The routers use Probe VNA like
ARP in order to obtain the station address of a destination node,
and will try both Ethernet and IEEE 802.3 encapsulation to contact the
target node. The router will answer VNA requests, for networks known to it,
with its station address. The requester will then direct its IP traffic to the
router. The routers do not implement name or proxy packets (requests or
replies). This is not a problem if bridging is enabled on the same ports that
enable IP routing in the network. The router will bridge these multicast
requests to their target nodes and back to the requester. If bridging is not
enabled, then other provisions must be made to resolve the name-to-IP
mapping, by using proxy servers or statically building the Nodal Registry in
each node.
Connection Scenarios
The following are two different TCP connection scenarios between node A
and node B over a router network. The first is without a proxy server, with
bridging enabled on the routers, and the second is with a proxy server and
with bridging disabled on the routers.
Figure 1. Network Diagram for Scenario 1
IP Address: 1.0.0.2
Station Address:
080009002222
IP Address: 2.0.0.2
Station Address:
080009003333
Node A
Node B
IP Address: 2.0.0.1
Station Address:
080009004444
IP Address: 1.0.0.1
Station Address:
080009001111
A Primer on HP Probe
HP Router Probe Implementation
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