Last Update: November 22, 1999
This scenario verifies interoperability when the target ROUTER is attached to the model network.
Verification that router treat the BGP4+
Verification Points:
- Router Sends s packets via shortest route, which is calculated from AS path,
for the destination address.
HOST-2
(Net-w) (Prefix 3ffe:501:481d:f006::/64) |
AS 3000 / -+-------+------------+---- /
AS3000 / | | /
/ (I/F-3w)| |(I/F-5w) /
////// ROUTER-3 /////////// ROUTER-5 /////
(I/F-3x)| |(I/F-5v)
| |
(Net-x) (Prefix 3ffe:501:481d:f005::/64) --+----+--- |
| |
|(I/F-2x) |
AS2000 -> ROUTER-2 |
|(I/F-2y) |
| |
(Net-y) (Prefix 3ffe:501:481d:f004::/64) -+-----+---- ---+-----+-- (Net-v)
| |
|(I/F-1y) |(I/F-4v)
/////// ROUTER-1 //// ROUTER-4 //////////
AS1000 / |(I/F-1z) |(I/F-4z) /
/ | | /
(Net-z) (Prefix 3ffe:501:481d:f002::/64) / -------+------+------+---- /
AS 1000 |
HOST-1
(Net-v) (Prefix 3ffe:501:481d:f007::/64)
///: is AS border line
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-w with power turned off. - ROUTER-1 Your Machine Power is turned off. I/F-1z is attached to Net-z while I/F-1y is attached to Net-y. AS number is 1000.
EBGP peer is AS2000.
Sends route of link is attached to interface I/F-1z.
Doesn't send IBGP to AS2000 using EBGP.
Sends RA to Net-y, and Net-z.
ROUTER-2 Reference Machine Power is turned off. I/F-2y is attached to Net-y while I/F-2x is attached to Net-x. AS number is 2000.
EBGP peer is AS1000 and AS3000.
Sends RA to Net-x and Net-y.
Doesn't send and receive RIP.ROUTER-3 Reference Machine Power is turned off. I/F-3x is attached to Net-x while I/F-3w is attached to Net-w. AS number is 3000.
IBGP peer is ROUTER-4.
EBGP peer is AS2000.
Sends route of link attached to interface I/F-3w using EBGP.
Doesn't send IBGP to AS2000 using EBGP.
Sends RA to Net-w and Net-x.ROUTER-4 Your Machine Power is turned off. I/F-4z is attached to Net-z while I/F-4v is attached to Net-v. AS number is 1000.
EBGP peer is AS2000 and AS3000.
Sends route of link is attached to interface I/F-4z.
Doesn't send IBGP to AS3000 using EBGP.
Sends RA to Net-v and Net-z.
ROUTER-5 Reference Machine Power is turned off. I/F-5w is attached to Net-w while I/F-5v is attached to Net-v. AS number is 3000.
IBGP peer is ROUTER-3.
EBGP peer is AS1000.
Sends route of link attached to interface I/F-5w.
Doesn't send IBGP to AS3000 using EBGP.
Sends RA to Net-v and Net-w.
icmp
Interoperability is checked using traceroute application program.
No Action Criteria Comments 1 Boot HOST-1. - - 2 Boot HOST-2. - - 3 Boot ROUTER-1. - - 4 Boot ROUTER-2. - - 5 Boot ROUTER-3. - Check the routing table of Router-1.
Now ROUTER-1, 2, 3 learn the path between Net-z and Net-w.Reachability Check 6 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> HOST-2.Check the BGP information and routing information of every router.
Check AS path and next hop value.7 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-1.Ditto Make shorter route 8 Boot ROUTER-4. - - 9 Boot ROUTER-5. - All routers learn the shortest path between Net-z and Net-w.
Check the BGP information and routing information of every router.Selection shorter route at both direction 10 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-4 -> ROUTER-5 -> HOST-2.Check the BGP information and routing information of every router.
Check AS path and next hop value.11 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-5 -> ROUTER-4 -> HOST-1.Ditto AS3000 controls incoming route using "PREPEND" 12 At ROUTER-5, prepend its AS number twice to the AS path advertising to ROUTER-4
(prepend 2).- - 13 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> HOST-2.Check the BGP information and routing information of every router.
Check AS path and next hop value.14 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-5 -> ROUTER-4 -> HOST-1.Ditto 15 At ROUTER-3, prepend its AS number twice to the AS path advertising to ROUTER-2
(prepend 2).- - 16 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-4 -> ROUTER-5 -> HOST-2.Check the BGP information and routing information of every router.
Check AS path and next hop value.17 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-5 -> ROUTER-4 -> HOST-1.Ditto AS1000 controls outbound route using "LOCAL PREFERENCE" 18 At ROUTER-4,
set "local preference =100" for all routes advertised from ROUTER-5.- Check the BGP information and routing information of every router.
Check AS path and next hop value.19 At ROUTER-1,
set "local preference =200" for all routes advertised from ROUTER-2.- Ditto 20 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> HOST-2.Ditto 21 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-5 -> ROUTER-4 -> HOST-1.Ditto AS1000 controls inbound route using "PREPEND" 22 At ROUTER-4, prepend its AS number twice to the AS path advertising to ROUTER-5
(prepend 2).- Check the BGP information and routing information of every router.
Check AS path and next hop value.23 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> HOST-2.Ditto 24 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-2.Ditto 25 At ROUTER-1, prepend its AS number twice to the AS path advertising to ROUTER-2
(prepend 2).- Ditto 26 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> HOST-2.Ditto 27 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-5 -> ROUTER-4 -> HOST-1.Ditto At both directions, change route of AS1000 (preparation after action 32) 28 At ROUTER-5 configure the value of local preference with 100 for all route advertised from ROUTER-4. - Check the BGP information and routing information of every router.
AS path, next hop value29 At ROUTER-3 configure the value of local preference with 200 for all route advertised from ROUTER-2. - Ditto At both directions, route of AS1000 becomes via ROUTER-1 (preparation after action 32) 30 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> HOST-2.Check the BGP information and routing information of every router.
AS path, next hop value.31 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-1.Ditto At both directions, route of AS1000 becomes via ROUTER-5 32 Pull off the cable (I/F-2y) from HUB. - - 33 Wait 4 minutes (adjustable by HOLDITME value). - - 34 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-4 -> ROUTER-5 -> HOST-2.Check the BGP information and routing information of every router.
Check AS path and next hop value.35 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-5 -> ROUTER-4 -> HOST-1.Ditto At both directions, route of AS1000 becomes via ROUTER-1 36 Put in the cable (I/F-2y) to HUB. - - 37 Wait 2 minutes (adjustable by HOLDITME value). - - 38 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-1 -> ROUTER-2 -> ROUTER-3 -> HOST-2.Check the BGP information and routing information of every router.
Check AS path and next hop value.39 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-1.Ditto At both directions, change route of AS1000 (preparation after action 46) 40 At ROUTER-4,
set "local preference =200" for all routes advertised from ROUTER-5.- Check the BGP information and routing information of every router.
Check AS path and next hop value.41 At ROUTER-1,
set "local preference =100" for all routes advertised from ROUTER-2.- Ditto 42 At ROUTER-5,
set "local preference =200" for all routes advertised from ROUTER-4.- Ditto 43 At ROUTER-3,
set "local preference =100" for all routes advertised from ROUTER-2.- Ditto At both directions, route of AS1000 becomes via ROUTER-5 (preparation after action 46) 44 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-4 -> ROUTER-5 -> HOST-2.Check the BGP information and routing information of every router.
Check AS path and next hop value.45 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-5 -> ROUTER-4 -> HOST-1.Ditto At both directions, route of AS1000 becomes via ROUTER-1 46 Pull out the cable of ROUTER-4 from HUB (I/F-4v). - - 47 Wait 4 minutes (adjustable by HOLDITME value). - - 48 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-2.Check the BGP information and routing information of every router.
Check AS path and next hop value.49 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute.
*ROUTER-3 -> ROUTER-2 -> ROUTER-1 -> HOST-1.Ditto At both directions, route of AS1000 becomes via ROUTER-5 50 Put the cable of ROUTER-4 (I/F-4v) in HUB. - 51 Wait 2 minutes (adjustable by HOLDITME value). - 52 At HOST-1, run "traceroute" to HOST-2's global address. *Complete traceroute.
*ROUTER-4 -> ROUTER-5 -> HOST-2.Check the BGP information and routing information of every router.
Check AS path and next hop value.53 At HOST-2, run "traceroute" to HOST-1's global address. *Complete traceroute
*ROUTER-5 -> ROUTER-4 -> HOST-1.Ditto Mark"*"with no number means that we are going to judge that subject.