Track 1. An Explorer Frame From Node 1 to Node 2
This section tracks explorer frames (AREs) sent from H1 to H2 in the
sample HP source-routing bridging network. Figure 18 below illustrates the
same network as does figure 17, except that arrows in figure 18 indicate the
direction of the frame’s path.
Internal LAN ID = 100
Internal LAN ID = 101
Internal LAN ID = 102
Group LAN ID = FFF
Group LAN ID = FFF
Group LAN ID = FFF
Bridge ID = A
Bridge ID = A
Bridge ID = A
Figure 18. Tracking an Explorer Frame
First bridge receiving the explorer frame:
The explorer frame
received by bridge A from ring 1 has not traversed any other bridges.
A simply does the following to the RIF before transmitting the frame
toward ring 2. (Figure 19 illustrates the RIF in the frame.)
Adds the incoming LAN ID, and its bridge ID
Adds the internal LAN ID, and its bridge ID
Adds the outgoing LAN ID, and bridge ID of 0
Other bridges receiving the explorer frame:
The explorer frame
received by bridges B and C contains internal LAN IDs (thus indicating
that this frame has traversed at least one other bridge). Each of these
bridges does the following to the RIF before transmitting the frame
toward rings 3 and 4. (Figure 19 illustrates the RIF in the frame.)
Keeps the outgoing LAN ID as its incoming LAN ID; replaces the
bridge ID of 0 with its own bridge ID.
Replaces the internal LAN ID and bridge ID of the last bridge
traversed with its own internal LAN ID and bridge ID.
Adds the outgoing LAN ID, and bridge ID of 0.
router A
router B
router C
H1
H2
1
2
4
3
Bridging Service
Source-Routing Bridging
2-28
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: ......