Last Update: November 24, 1999
This scenario verifies interoperability when the target ROUTER is attached to the model network.
Routers exchange Routing Information each other with RIPng. Check if routers determine the best route.
Verification Points : - Exchange of Routing Information from RIPng between routers, and packets are forwarded to the best route. - If a path is broken, the ROUTER transmits Routing Information Update and packets are forwarded to another route. - If the ROUTER's cost of route is increased, the ROUTER transmits Routing Information Update and packets are forwarded to the best route.
HOST-2
|
(Net-v) --------------+------+------------
(Prefix 3ffe:501:481d:f005::/64) |
(Prefix fec0:0:0:f005::/64) (I/F5-v) |
ROUTER-5
(I/F5-w) |
|
(Net-w) --------+---------+------------+-------
(Prefix 3ffe:501:481d:f004::/64) | |
(Prefix fec0:0:0:f004::/64) (I/F3-w) | |
ROUTER-3 |
(I/F3-x) | |
| (I/F4-w) |
(Net-x) --------+--+----- ROUTER-4
(Prefix 3ffe:501:481d:f003::/64) | (I/F4-y) |
(Prefix fec0:0:0:f003::/64) (I/F2-x) | |
ROUTER-2 |
(I/F2-y) | |
| |
(Net-y) --------+------------+------------+--------
(Prefix 3ffe:501:481d:f002::/64) |
(Prefix fec0:0:0:f002::/64) (I/F1-y) |
ROUTER-1
(I/F1-z) |
|
(Net-z) -----------+------+-----------
(Prefix 3ffe:501:481d:f001::/64) |
(Prefix fec0:0:0:f001::/64) HOST-1
Machine Comments Initial status Configuration HOST-1 Reference Machine Is attached to Net-z with power turned off. - HOST-2 Reference Machine Is attached to Net-u with power turned off. - ROUTER-1 Reference Machine Power is turned off.
I/F-1z is attached to Net-z.
I/F-1y is attached to Net-y.
Sends RIPng to Net-z/Net-y.ROUTER-2 Target Machine Power is turned off.
I/F-2y is attached to Net-y.
I/F-2x is attached to Net-x.Sends RIPng to Net-y/Net-x. ROUTER-3 Reference Machine Power is turned off.
I/F-3x is attached to Net-x.
I/F-3w is attached to Net-w.Sends RIPng to Net-x/Net-w. ROUTER-4 Target Machine Power is turned off.
I/F-4y is attached to Net-y.
I/F-4w is attached to Net-w.Sends RIPng to Net-y/Net-w. ROUTER-5 Reference Machine Power is turned off.
I/F-5w is attached to Net-w.
I/F-5u is attached to Net-u.Sends RIPng to Net-w/Net-v.
Interoperability is checked using traceroute application program.
No Action Criteria Comments 1 Boot ROUTER-1. - - 2 Boot ROUTER-2. - - 3 Boot ROUTER-3. - - 4 Boot ROUTER-5. - - 5 Boot HOST-1. - - 6 Boot HOST-2. - - 7 At HOST-1, run "traceroute" to HOST-2's Global address. ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 2, 3, 5. 8 At HOST-2, run "traceroute" to HOST-1's Global address. ROUTER-5 -> ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 3, 2, 1. 9 At HOST-1, run "traceroute" to HOST-2's Site-local address. ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 2, 3, 5. 10 At HOST-2, run "traceroute" to HOST-1's Site-local address. ROUTER-5 -> ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 3, 2, 1. Check routing table of all routers. 11 Boot ROUTER-4. Check Path Net-v in Routing Table of ROUTER-2 and ping packet's route change to the better route. All routers learn the shortest path between Net-z and Net-v. 12 At HOST-1, run "traceroute" to HOST-2's Global address. ROUTER-1 -> ROUTER-4 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 4, 5. 13 At HOST-2, run "traceroute" to HOST-1's Global address. ROUTER-5 -> ROUTER-4 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 4, 1. 14 At HOST-1, run "traceroute" to HOST-2's Site-local address. ROUTER-1 -> ROUTER-4 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 4, 5. 15 At HOST-2, run "traceroute" to HOST-1's Site-local address. ROUTER-5 -> ROUTER-4 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 4, 1. Check routing table of all routers. 16 Disconnect a cable. Change to the another route in about 3 minutes. Pull off a cable on ROUTER-4's I/F4-w interface.
Timer expired, ROUTER-4 decides path of Net-v broken. ROUTER-4 sends RIPng Update. All routers change path between Net-z and Net-v.Wait 3 minutes. 17 At HOST-1, run "traceroute" to HOST-2's Global address. ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 2, 3, 5. 18 At HOST-2, run "traceroute" to HOST-1's Global address. ROUTER-5 -> ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 3, 2, 1. 19 At HOST-1, run "traceroute" to HOST-2's Site-local address. ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 2, 3, 5. 20 At HOST-2, run "traceroute" to HOST-1's Site-local address. ROUTER-5 -> ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 3, 2, 1. Check routing table of all routers. 21 Connect a cable. Change to the better route. Put on a cable on ROUTER-4's I/F4-w interface.
ROUTER-4 sends RIPng Update.22 At HOST-1, run "traceroute" to HOST-2's Global address. ROUTER-1 -> ROUTER-4 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 4, 5. 23 At HOST-2, run "traceroute" to HOST-1's Global address. ROUTER-5 -> ROUTER-4 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 4, 1. 24 At HOST-1, run "traceroute" to HOST-2's Site-local address. ROUTER-1 -> ROUTER-4 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 4, 5. 25 At HOST-2, run "traceroute" to HOST-1's Site-local address. ROUTER-5 -> ROUTER-4 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 4, 1. Check routing table of all routers. 26 Increase cost of route. Change to the better route. Add 3 metrics to ROUTER-4's interface (I/F4-w).
ROUTER-4 sends RIPng Update.27 At HOST-1, run "traceroute" to HOST-2's Global address. ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 2, 3, 5. 28 At HOST-2, run "traceroute" to HOST-1's Global address. ROUTER-5 -> ROUTER-4 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 4, 1. 29 At HOST-1, run "traceroute" to HOST-2's Site-local address. ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 2, 3, 5. 30 At HOST-2, run "traceroute" to HOST-1's Site-local address. ROUTER-5 -> ROUTER-4 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 4, 1. Check routing table of all routers. 31 Increase cost of route. Change to the better route. Add 3 metrics to ROUTER-4's interface (I/F4-y).
ROUTER-4 sends RIPng Update.32 At HOST-1, run "traceroute" to HOST-2's Global address. ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 2, 3, 5. 33 At HOST-2, run "traceroute" to HOST-1's Global address. ROUTER-5 -> ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 3, 2, 1. 34 At HOST-1, run "traceroute" to HOST-2's Site-local address. ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> ROUTER-5 -> HOST-2 HOST-1 and 2 communicate via ROUTER-1, 2, 3, 5. 35 At HOST-2, run "traceroute" to HOST-1's Site-local address. ROUTER-5 -> ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-1 HOST-2 and 1 communicate via ROUTER-5, 3, 2, 1. Check routing table of all routers.