This sequence of events is shown in figure 4. Both the “poll interval” and the
“interval between full polls” are configurable parameters, the values of
which should be set in accordance with the network provider’s subscription
parameters.
Figure 4. Interleaving of Full Status and Keep Alive Polls
Full Status
When a router attached to a Frame Relay network is
initialized, the first message that the router sends to the network is a full
status poll. The network responds with a full status reply. The status
information returned by the network indicates which PVCs are available
for use. The full status reply lists each of the DLCIs available and
provides two bits of status information per DLCI. The first status bit is
called the “New” bit; the second status bit is called the “Active” bit.
Table 7 shows how these bits are used.
Frame Relay
Network
Poll
Interval
Interval
Between
Full Polls
R
Keep Alive Poll
Full Status Reply
Full Status Poll
Keep Alive Reply
TIME
Keep Alive Pole
Keep Alive Reply
Keep Alive Poll
Keep Alive Reply
Keep Alive Poll
Keep Alive Reply
Keep Alive Poll
Keep Alive Reply
Full Status Poll
Full Status Reply
Keep Alive Poll
Keep Alive Reply
Linking Up with Frame Relay
Local Management Interface
3-98
Summary of Contents for 600 Series
Page 1: ...Hewlett Packard Series 200 400 and 600 Routers HP Routing Services and Applications ...
Page 4: ......
Page 5: ...1 Product Notes ...
Page 6: ...Features of HP Routers Architecture and Technology Branch Office Routing Product Notes 1 2 ...
Page 38: ...Architecture and Technology Software Control Path Architecture 1 34 ...
Page 52: ...Branch Office Routing Future Directions 1 48 ...
Page 53: ...2 Routing Services Notes ...
Page 106: ...Bridging Service Traffic Prioritization 2 54 ...
Page 158: ...Novell IPX Routing Service NetBIOS Protocol Support 2 106 ...
Page 194: ...Data Compression for WAN Links Conclusion 2 142 ...
Page 195: ...3 Application Notes and Case Studies ...
Page 224: ...Improving Network Availability Application Recovery 3 30 ...
Page 234: ...ISDN Wide Area Network Design Dry Creek Joint Elem School District Performance 3 40 ...
Page 316: ......