Paradyne Hotwire DSLAM Manual

A SERVICE OF

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Packet Walk-Throughs

9-7

8000-A2-GB21-30

April 1998

The Hotwire RTU then issues a ping reply to IP address 135.1.1.1.

1. The RTU forwards the ping reply to the 8546 DSL card.

2. The 8546 DSL card consults its routing table to identify how to forward the

reply. Route #2 is used because the destination address (135.1.1.1) is the

135.1.1 subnet. Therefore, the next-hop address is the MCC card’s

s1b

interface (135.1.3.1).

3. Similarly, upon receiving the packet, the MCC card consults its routing table

to identify how to forward the packet. Since the destination IP address of the

ping is WS1 (135.1.1.1) and this does not match any entry in the route table,

the next-hop IP address (135.1.2.1) of the default route is used.

4. The MCC card then forwards the packet to its 10BaseT interface to the

router.

5. The router forwards the packet toward WS1 by normal means.