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Monday, September 20, 2010
Tuesday, September 14, 2010
OSPF Mock Lab - Another Challenge To Solve (Solution 1)
So after a little long I am back with Solution of OSPF mock lab challenge. But good part is that someone actually solved the puzzle and won the prize.
Yup...Manish Salaria
Although his solution was different from mine and looks easier to configure, but if you will get into details about how packet is flowing between R2's loop-back and R6's loop-back then things might get little complicated to understand in first look.
Anyways here I am posting his solution, soon this week I'll post mine too. With his solution though I am not putting any explanation here but mine solution will be having detailed walk through.
I changed interface numbering a little bit as I tested this on different PC running Linux and different Set of IOS. So you may want to adjust interface numbering under initial configuration I gave in first post.
Here is quick GNS topology I used: Click on Image for better view
So here we go:
R1:
R1#sh ip int b | e una|do
Interface IP-Address OK? Method Status Protocol
Serial0/0 123.123.123.1 YES manual up up
FastEthernet1/0 14.14.14.1 YES manual up up
Loopback0 11.11.11.11 YES manual up up
R1#sh run int s0/0
Building configuration...
Current configuration : 337 bytes
!
interface Serial0/0
ip address 123.123.123.1 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
serial restart-delay 0
no arp frame-relay
frame-relay map ip 123.123.123.1 102
frame-relay map ip 123.123.123.2 102 broadcast
frame-relay map ip 123.123.123.3 103 broadcast
no frame-relay inverse-arp
end
R1#sh run | s r o
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
network 14.14.14.1 0.0.0.0 area 1
network 123.123.123.1 0.0.0.0 area 0
R1#sh ip ro | b ^G
Gateway of last resort is 14.14.14.4 to network 0.0.0.0
33.0.0.0/24 is subnetted, 1 subnets
O 33.33.33.0 [110/65] via 123.123.123.3, 02:39:10, Serial0/0
22.0.0.0/24 is subnetted, 1 subnets
O 22.22.22.0 [110/65] via 123.123.123.2, 02:39:10, Serial0/0
144.144.0.0/32 is subnetted, 1 subnets
O 144.144.144.144 [110/2] via 14.14.14.4, 02:18:00, FastEthernet1/0
11.0.0.0/24 is subnetted, 1 subnets
C 11.11.11.0 is directly connected, Loopback0
123.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
O 123.123.123.3/32 [110/64] via 123.123.123.3, 02:39:10, Serial0/0
O 123.123.123.2/32 [110/64] via 123.123.123.2, 02:39:10, Serial0/0
C 123.123.123.0/24 is directly connected, Serial0/0
14.0.0.0/24 is subnetted, 1 subnets
C 14.14.14.0 is directly connected, FastEthernet1/0
O*E2 0.0.0.0/0 [110/1] via 14.14.14.4, 02:18:00, FastEthernet1/0
R2:
R2#sh prot | e una|do
Global values:
Internet Protocol routing is enabled
Serial0/0 is up, line protocol is up
Internet address is 123.123.123.2/24
Loopback0 is up, line protocol is up
Internet address is 22.22.22.22/24
R2#sh run int s0/0
Building configuration...
Current configuration : 289 bytes
!
interface Serial0/0
ip address 123.123.123.2 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
serial restart-delay 0
no arp frame-relay
frame-relay map ip 123.123.123.1 201 broadcast
frame-relay map ip 123.123.123.2 201
no frame-relay inverse-arp
end
R2#sh run | s r o
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
network 123.123.123.2 0.0.0.0 area 0
R2#sh ip ro | b ^G
Gateway of last resort is 123.123.123.1 to network 0.0.0.0
33.0.0.0/24 is subnetted, 1 subnets
O 33.33.33.0 [110/129] via 123.123.123.1, 02:43:09, Serial0/0
22.0.0.0/24 is subnetted, 1 subnets
C 22.22.22.0 is directly connected, Loopback0
144.144.0.0/32 is subnetted, 1 subnets
O IA 144.144.144.144 [110/66] via 123.123.123.1, 02:41:42, Serial0/0
11.0.0.0/24 is subnetted, 1 subnets
O 11.11.11.0 [110/65] via 123.123.123.1, 02:43:09, Serial0/0
123.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
O 123.123.123.3/32 [110/128] via 123.123.123.1, 02:43:09, Serial0/0
O 123.123.123.1/32 [110/64] via 123.123.123.1, 02:43:09, Serial0/0
C 123.123.123.0/24 is directly connected, Serial0/0
14.0.0.0/24 is subnetted, 1 subnets
O IA 14.14.14.0 [110/65] via 123.123.123.1, 02:43:09, Serial0/0
O*E2 0.0.0.0/0 [110/1] via 123.123.123.1, 02:22:04, Serial0/0
R3:
R3#sh prot | e una|do
Global values:
Internet Protocol routing is enabled
Serial0/0 is up, line protocol is up
Internet address is 123.123.123.3/24
Loopback0 is up, line protocol is up
Internet address is 33.33.33.33/24
R3#sh run int s0/0
Building configuration...
Current configuration : 289 bytes
!
interface Serial0/0
ip address 123.123.123.3 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
serial restart-delay 0
no arp frame-relay
frame-relay map ip 123.123.123.1 301 broadcast
frame-relay map ip 123.123.123.3 301
no frame-relay inverse-arp
end
R3#sh run | s r o
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
network 123.123.123.3 0.0.0.0 area 0
R3#sh ip ro | b ^G
Gateway of last resort is 123.123.123.1 to network 0.0.0.0
33.0.0.0/24 is subnetted, 1 subnets
C 33.33.33.0 is directly connected, Loopback0
22.0.0.0/24 is subnetted, 1 subnets
O 22.22.22.0 [110/129] via 123.123.123.1, 02:46:13, Serial0/0
144.144.0.0/32 is subnetted, 1 subnets
O IA 144.144.144.144 [110/66] via 123.123.123.1, 02:44:36, Serial0/0
11.0.0.0/24 is subnetted, 1 subnets
O 11.11.11.0 [110/65] via 123.123.123.1, 02:46:13, Serial0/0
123.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
O 123.123.123.2/32 [110/128] via 123.123.123.1, 02:46:13, Serial0/0
O 123.123.123.1/32 [110/64] via 123.123.123.1, 02:46:13, Serial0/0
C 123.123.123.0/24 is directly connected, Serial0/0
14.0.0.0/24 is subnetted, 1 subnets
O IA 14.14.14.0 [110/65] via 123.123.123.1, 02:46:13, Serial0/0
O*E2 0.0.0.0/0 [110/1] via 123.123.123.1, 02:24:58, Serial0/0
R4:
R4#sh prot | e una|do
Global values:
Internet Protocol routing is enabled
FastEthernet0/0 is up, line protocol is up
Internet address is 14.14.14.4/24
FastEthernet1/0 is up, line protocol is up
Internet address is 45.45.45.4/24
Loopback0 is up, line protocol is up
Internet address is 44.44.44.44/24
Loopback1 is up, line protocol is up
Internet address is 144.144.144.144/24
R4#sh run | s r r
router rip
version 2
network 44.0.0.0
network 45.0.0.0
no auto-summary
R4#sh run | s r o
router ospf 1
router-id 4.4.4.4
log-adjacency-changes
network 14.14.14.4 0.0.0.0 area 1
default-information originate always
R4#sh ip ro | b ^G
Gateway of last resort is 45.45.45.5 to network 0.0.0.0
155.155.0.0/24 is subnetted, 1 subnets
R 155.155.155.0 [120/1] via 45.45.45.5, 00:00:24, FastEthernet1/0
33.0.0.0/24 is subnetted, 1 subnets
O IA 33.33.33.0 [110/66] via 14.14.14.1, 02:28:36, FastEthernet0/0
22.0.0.0/24 is subnetted, 1 subnets
O IA 22.22.22.0 [110/66] via 14.14.14.1, 02:28:36, FastEthernet0/0
144.144.0.0/24 is subnetted, 1 subnets
C 144.144.144.0 is directly connected, Loopback1
11.0.0.0/24 is subnetted, 1 subnets
O IA 11.11.11.0 [110/2] via 14.14.14.1, 02:28:36, FastEthernet0/0
123.0.0.0/32 is subnetted, 3 subnets
O IA 123.123.123.3 [110/65] via 14.14.14.1, 02:28:36, FastEthernet0/0
O IA 123.123.123.2 [110/65] via 14.14.14.1, 02:28:36, FastEthernet0/0
O IA 123.123.123.1 [110/1] via 14.14.14.1, 02:28:36, FastEthernet0/0
44.0.0.0/24 is subnetted, 1 subnets
C 44.44.44.0 is directly connected, Loopback0
14.0.0.0/24 is subnetted, 1 subnets
C 14.14.14.0 is directly connected, FastEthernet0/0
45.0.0.0/24 is subnetted, 1 subnets
C 45.45.45.0 is directly connected, FastEthernet1/0
R* 0.0.0.0/0 [120/1] via 45.45.45.5, 00:00:24, FastEthernet1/0
R5:
R5#sh prot | e una|do
Global values:
Internet Protocol routing is enabled
FastEthernet0/0 is up, line protocol is up
Internet address is 45.45.45.5/24
FastEthernet1/0 is up, line protocol is up
Internet address is 56.56.56.5/24
Loopback0 is up, line protocol is up
Internet address is 55.55.55.55/24
Loopback1 is up, line protocol is up
Internet address is 155.155.155.155/24
R5#sh run | i ip route
ip route 0.0.0.0 0.0.0.0 45.45.45.4
R5#sh run | s r r
router rip
version 2
network 45.0.0.0
network 155.155.0.0
default-information originate
no auto-summary
R5#sh run | s r o
router ospf 1
router-id 5.5.5.5
log-adjacency-changes
network 56.56.56.5 0.0.0.0 area 2
default-information originate
R5#sh ip ro | b ^G
Gateway of last resort is 45.45.45.4 to network 0.0.0.0
155.155.0.0/24 is subnetted, 1 subnets
C 155.155.155.0 is directly connected, Loopback1
55.0.0.0/24 is subnetted, 1 subnets
C 55.55.55.0 is directly connected, Loopback0
66.0.0.0/24 is subnetted, 1 subnets
O 66.66.66.0 [110/2] via 56.56.56.6, 00:01:00, FastEthernet1/0
56.0.0.0/24 is subnetted, 1 subnets
C 56.56.56.0 is directly connected, FastEthernet1/0
44.0.0.0/24 is subnetted, 1 subnets
R 44.44.44.0 [120/1] via 45.45.45.4, 00:00:07, FastEthernet0/0
45.0.0.0/24 is subnetted, 1 subnets
C 45.45.45.0 is directly connected, FastEthernet0/0
S* 0.0.0.0/0 [1/0] via 45.45.45.4
R6:
R6#sh prot | e una|do
Global values:
Internet Protocol routing is enabled
FastEthernet0/0 is up, line protocol is up
Internet address is 56.56.56.6/24
Loopback0 is up, line protocol is up
Internet address is 66.66.66.66/24
R6#sh run | s r o
router ospf 1
router-id 6.6.6.6
log-adjacency-changes
network 56.56.56.6 0.0.0.0 area 2
R6#sh ip ro | b ^G
Gateway of last resort is 56.56.56.5 to network 0.0.0.0
55.0.0.0/24 is subnetted, 1 subnets
O 55.55.55.0 [110/2] via 56.56.56.5, 02:12:56, FastEthernet0/0
66.0.0.0/24 is subnetted, 1 subnets
C 66.66.66.0 is directly connected, Loopback0
56.0.0.0/24 is subnetted, 1 subnets
C 56.56.56.0 is directly connected, FastEthernet0/0
O*E2 0.0.0.0/0 [110/1] via 56.56.56.5, 02:03:20, FastEthernet0/0
Final Reachability Check using TCL:
tclsh
foreach address {
123.123.123.1
14.14.14.1
11.11.11.11
123.123.123.2
22.22.22.22
123.123.123.3
33.33.33.33
14.14.14.4
45.45.45.4
44.44.44.44
144.144.144.144
45.45.45.5
56.56.56.5
55.55.55.55
155.155.155.155
56.56.56.6
66.66.66.66
} {ping $address}
Yup...Manish Salaria
Although his solution was different from mine and looks easier to configure, but if you will get into details about how packet is flowing between R2's loop-back and R6's loop-back then things might get little complicated to understand in first look.
Anyways here I am posting his solution, soon this week I'll post mine too. With his solution though I am not putting any explanation here but mine solution will be having detailed walk through.
I changed interface numbering a little bit as I tested this on different PC running Linux and different Set of IOS. So you may want to adjust interface numbering under initial configuration I gave in first post.
Here is quick GNS topology I used: Click on Image for better view
So here we go:
R1:
R1#sh ip int b | e una|do
Interface IP-Address OK? Method Status Protocol
Serial0/0 123.123.123.1 YES manual up up
FastEthernet1/0 14.14.14.1 YES manual up up
Loopback0 11.11.11.11 YES manual up up
R1#sh run int s0/0
Building configuration...
Current configuration : 337 bytes
!
interface Serial0/0
ip address 123.123.123.1 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
serial restart-delay 0
no arp frame-relay
frame-relay map ip 123.123.123.1 102
frame-relay map ip 123.123.123.2 102 broadcast
frame-relay map ip 123.123.123.3 103 broadcast
no frame-relay inverse-arp
end
R1#sh run | s r o
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
network 14.14.14.1 0.0.0.0 area 1
network 123.123.123.1 0.0.0.0 area 0
R1#sh ip ro | b ^G
Gateway of last resort is 14.14.14.4 to network 0.0.0.0
33.0.0.0/24 is subnetted, 1 subnets
O 33.33.33.0 [110/65] via 123.123.123.3, 02:39:10, Serial0/0
22.0.0.0/24 is subnetted, 1 subnets
O 22.22.22.0 [110/65] via 123.123.123.2, 02:39:10, Serial0/0
144.144.0.0/32 is subnetted, 1 subnets
O 144.144.144.144 [110/2] via 14.14.14.4, 02:18:00, FastEthernet1/0
11.0.0.0/24 is subnetted, 1 subnets
C 11.11.11.0 is directly connected, Loopback0
123.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
O 123.123.123.3/32 [110/64] via 123.123.123.3, 02:39:10, Serial0/0
O 123.123.123.2/32 [110/64] via 123.123.123.2, 02:39:10, Serial0/0
C 123.123.123.0/24 is directly connected, Serial0/0
14.0.0.0/24 is subnetted, 1 subnets
C 14.14.14.0 is directly connected, FastEthernet1/0
O*E2 0.0.0.0/0 [110/1] via 14.14.14.4, 02:18:00, FastEthernet1/0
R2:
R2#sh prot | e una|do
Global values:
Internet Protocol routing is enabled
Serial0/0 is up, line protocol is up
Internet address is 123.123.123.2/24
Loopback0 is up, line protocol is up
Internet address is 22.22.22.22/24
R2#sh run int s0/0
Building configuration...
Current configuration : 289 bytes
!
interface Serial0/0
ip address 123.123.123.2 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
serial restart-delay 0
no arp frame-relay
frame-relay map ip 123.123.123.1 201 broadcast
frame-relay map ip 123.123.123.2 201
no frame-relay inverse-arp
end
R2#sh run | s r o
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
network 123.123.123.2 0.0.0.0 area 0
R2#sh ip ro | b ^G
Gateway of last resort is 123.123.123.1 to network 0.0.0.0
33.0.0.0/24 is subnetted, 1 subnets
O 33.33.33.0 [110/129] via 123.123.123.1, 02:43:09, Serial0/0
22.0.0.0/24 is subnetted, 1 subnets
C 22.22.22.0 is directly connected, Loopback0
144.144.0.0/32 is subnetted, 1 subnets
O IA 144.144.144.144 [110/66] via 123.123.123.1, 02:41:42, Serial0/0
11.0.0.0/24 is subnetted, 1 subnets
O 11.11.11.0 [110/65] via 123.123.123.1, 02:43:09, Serial0/0
123.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
O 123.123.123.3/32 [110/128] via 123.123.123.1, 02:43:09, Serial0/0
O 123.123.123.1/32 [110/64] via 123.123.123.1, 02:43:09, Serial0/0
C 123.123.123.0/24 is directly connected, Serial0/0
14.0.0.0/24 is subnetted, 1 subnets
O IA 14.14.14.0 [110/65] via 123.123.123.1, 02:43:09, Serial0/0
O*E2 0.0.0.0/0 [110/1] via 123.123.123.1, 02:22:04, Serial0/0
R3:
R3#sh prot | e una|do
Global values:
Internet Protocol routing is enabled
Serial0/0 is up, line protocol is up
Internet address is 123.123.123.3/24
Loopback0 is up, line protocol is up
Internet address is 33.33.33.33/24
R3#sh run int s0/0
Building configuration...
Current configuration : 289 bytes
!
interface Serial0/0
ip address 123.123.123.3 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
serial restart-delay 0
no arp frame-relay
frame-relay map ip 123.123.123.1 301 broadcast
frame-relay map ip 123.123.123.3 301
no frame-relay inverse-arp
end
R3#sh run | s r o
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
network 123.123.123.3 0.0.0.0 area 0
R3#sh ip ro | b ^G
Gateway of last resort is 123.123.123.1 to network 0.0.0.0
33.0.0.0/24 is subnetted, 1 subnets
C 33.33.33.0 is directly connected, Loopback0
22.0.0.0/24 is subnetted, 1 subnets
O 22.22.22.0 [110/129] via 123.123.123.1, 02:46:13, Serial0/0
144.144.0.0/32 is subnetted, 1 subnets
O IA 144.144.144.144 [110/66] via 123.123.123.1, 02:44:36, Serial0/0
11.0.0.0/24 is subnetted, 1 subnets
O 11.11.11.0 [110/65] via 123.123.123.1, 02:46:13, Serial0/0
123.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
O 123.123.123.2/32 [110/128] via 123.123.123.1, 02:46:13, Serial0/0
O 123.123.123.1/32 [110/64] via 123.123.123.1, 02:46:13, Serial0/0
C 123.123.123.0/24 is directly connected, Serial0/0
14.0.0.0/24 is subnetted, 1 subnets
O IA 14.14.14.0 [110/65] via 123.123.123.1, 02:46:13, Serial0/0
O*E2 0.0.0.0/0 [110/1] via 123.123.123.1, 02:24:58, Serial0/0
R4:
R4#sh prot | e una|do
Global values:
Internet Protocol routing is enabled
FastEthernet0/0 is up, line protocol is up
Internet address is 14.14.14.4/24
FastEthernet1/0 is up, line protocol is up
Internet address is 45.45.45.4/24
Loopback0 is up, line protocol is up
Internet address is 44.44.44.44/24
Loopback1 is up, line protocol is up
Internet address is 144.144.144.144/24
R4#sh run | s r r
router rip
version 2
network 44.0.0.0
network 45.0.0.0
no auto-summary
R4#sh run | s r o
router ospf 1
router-id 4.4.4.4
log-adjacency-changes
network 14.14.14.4 0.0.0.0 area 1
default-information originate always
R4#sh ip ro | b ^G
Gateway of last resort is 45.45.45.5 to network 0.0.0.0
155.155.0.0/24 is subnetted, 1 subnets
R 155.155.155.0 [120/1] via 45.45.45.5, 00:00:24, FastEthernet1/0
33.0.0.0/24 is subnetted, 1 subnets
O IA 33.33.33.0 [110/66] via 14.14.14.1, 02:28:36, FastEthernet0/0
22.0.0.0/24 is subnetted, 1 subnets
O IA 22.22.22.0 [110/66] via 14.14.14.1, 02:28:36, FastEthernet0/0
144.144.0.0/24 is subnetted, 1 subnets
C 144.144.144.0 is directly connected, Loopback1
11.0.0.0/24 is subnetted, 1 subnets
O IA 11.11.11.0 [110/2] via 14.14.14.1, 02:28:36, FastEthernet0/0
123.0.0.0/32 is subnetted, 3 subnets
O IA 123.123.123.3 [110/65] via 14.14.14.1, 02:28:36, FastEthernet0/0
O IA 123.123.123.2 [110/65] via 14.14.14.1, 02:28:36, FastEthernet0/0
O IA 123.123.123.1 [110/1] via 14.14.14.1, 02:28:36, FastEthernet0/0
44.0.0.0/24 is subnetted, 1 subnets
C 44.44.44.0 is directly connected, Loopback0
14.0.0.0/24 is subnetted, 1 subnets
C 14.14.14.0 is directly connected, FastEthernet0/0
45.0.0.0/24 is subnetted, 1 subnets
C 45.45.45.0 is directly connected, FastEthernet1/0
R* 0.0.0.0/0 [120/1] via 45.45.45.5, 00:00:24, FastEthernet1/0
R5:
R5#sh prot | e una|do
Global values:
Internet Protocol routing is enabled
FastEthernet0/0 is up, line protocol is up
Internet address is 45.45.45.5/24
FastEthernet1/0 is up, line protocol is up
Internet address is 56.56.56.5/24
Loopback0 is up, line protocol is up
Internet address is 55.55.55.55/24
Loopback1 is up, line protocol is up
Internet address is 155.155.155.155/24
R5#sh run | i ip route
ip route 0.0.0.0 0.0.0.0 45.45.45.4
R5#sh run | s r r
router rip
version 2
network 45.0.0.0
network 155.155.0.0
default-information originate
no auto-summary
R5#sh run | s r o
router ospf 1
router-id 5.5.5.5
log-adjacency-changes
network 56.56.56.5 0.0.0.0 area 2
default-information originate
R5#sh ip ro | b ^G
Gateway of last resort is 45.45.45.4 to network 0.0.0.0
155.155.0.0/24 is subnetted, 1 subnets
C 155.155.155.0 is directly connected, Loopback1
55.0.0.0/24 is subnetted, 1 subnets
C 55.55.55.0 is directly connected, Loopback0
66.0.0.0/24 is subnetted, 1 subnets
O 66.66.66.0 [110/2] via 56.56.56.6, 00:01:00, FastEthernet1/0
56.0.0.0/24 is subnetted, 1 subnets
C 56.56.56.0 is directly connected, FastEthernet1/0
44.0.0.0/24 is subnetted, 1 subnets
R 44.44.44.0 [120/1] via 45.45.45.4, 00:00:07, FastEthernet0/0
45.0.0.0/24 is subnetted, 1 subnets
C 45.45.45.0 is directly connected, FastEthernet0/0
S* 0.0.0.0/0 [1/0] via 45.45.45.4
R6:
R6#sh prot | e una|do
Global values:
Internet Protocol routing is enabled
FastEthernet0/0 is up, line protocol is up
Internet address is 56.56.56.6/24
Loopback0 is up, line protocol is up
Internet address is 66.66.66.66/24
R6#sh run | s r o
router ospf 1
router-id 6.6.6.6
log-adjacency-changes
network 56.56.56.6 0.0.0.0 area 2
R6#sh ip ro | b ^G
Gateway of last resort is 56.56.56.5 to network 0.0.0.0
55.0.0.0/24 is subnetted, 1 subnets
O 55.55.55.0 [110/2] via 56.56.56.5, 02:12:56, FastEthernet0/0
66.0.0.0/24 is subnetted, 1 subnets
C 66.66.66.0 is directly connected, Loopback0
56.0.0.0/24 is subnetted, 1 subnets
C 56.56.56.0 is directly connected, FastEthernet0/0
O*E2 0.0.0.0/0 [110/1] via 56.56.56.5, 02:03:20, FastEthernet0/0
Final Reachability Check using TCL:
tclsh
foreach address {
123.123.123.1
14.14.14.1
11.11.11.11
123.123.123.2
22.22.22.22
123.123.123.3
33.33.33.33
14.14.14.4
45.45.45.4
44.44.44.44
144.144.144.144
45.45.45.5
56.56.56.5
55.55.55.55
155.155.155.155
56.56.56.6
66.66.66.66
} {ping $address}
HTH...
Deepak Arora Thursday, September 9, 2010
CCIE Troubleshooting Labs - From Tripple CCIE DAN Shechter
If you preparing for CCIE R&S then you must aware about 2 Hours Long Hands On Complex Troubleshooting Section it has got since Ver 4 Blueprint introduced.
To help people further; Popular CCIE Instructor Narbik K along with CCIE DAN S have written a TS Workbook.
Apart from that DAN is running a blog where he posts TS tickets in free for R&S candidates.
So here is quick link to DAN's Blog : http://dans-net.com/TS_mini/
If you interested in buying whole TS workbook please visit :
Also worth to mention that 1 complete TS Lab out of that workbook is free to download as sample.
and of-course...they are not paying me anything to share all this info :-)
To help people further; Popular CCIE Instructor Narbik K along with CCIE DAN S have written a TS Workbook.
Apart from that DAN is running a blog where he posts TS tickets in free for R&S candidates.
So here is quick link to DAN's Blog : http://dans-net.com/TS_mini/
If you interested in buying whole TS workbook please visit :
Also worth to mention that 1 complete TS Lab out of that workbook is free to download as sample.
and of-course...they are not paying me anything to share all this info :-)
HTH...
Deepak Arora
Tuesday, September 7, 2010
Frame-Relay Switching & Unnumbered Interfaces
So after staying away from my blog I am back again with some more exiting stuff for today.
As everyone know that New CCIE Ver 4 Lab consists many new topics. One topic among that all new exiting stuff is Frame-Relay Switching. I have already explained FR Switching in by previous blog post HERE
But that was all basic stuff. Now today we gonna add little more stuff over top of it.
The idea came into mind when one friend sent me a scenario and diagram asking about it's solution in my opinion. He was attempting one mock lab today. So I thought to bring that idea here for everyone.
Here is the quick diagram - Click on image for better view :)
Here were the quick requirements:
1. Use LMI type CISCO over FR-SW
2. On R1 & R3 LMI Autosense should be enabled
3. On R1 & R3 don't use any Static FR Mappings or Inverse ARP
4. Use PPP Over FR between R1 and R3
5. Take any IP Address from any available physical interface
as mentioned in diagram.
6. Keep In mind that in future you are supposed to run Multi-Link
, so plan things accordingly at this initial stage.
Cool...isn't it ? :-)
What would be your solution ?
Here is mine:
!
frame-relay switching
!
FR-SW#sh run int s0/0
Building configuration...
Current configuration : 191 bytes
!
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 231 interface Serial0/1 233
end
!
FR-SW#
FR-SW#sh run int s0/1
Building configuration...
Current configuration : 191 bytes
!
interface Serial0/1
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 233 interface Serial0/0 231
end
!
FR-SW#
R1#sh run int multilink1
Building configuration...
Current configuration : 121 bytes
!
interface Multilink1
ip unnumbered FastEthernet0/0
no peer neighbor-route
ppp multilink
ppp multilink group 1
end
!
R1#sh run int Virtual-Template1
Building configuration...
Current configuration : 89 bytes
!
interface Virtual-Template1
no ip address
ppp multilink
ppp multilink group 1
end
!
R1#sh run int s0/0
Building configuration...
Current configuration : 171 bytes
!
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay interface-dlci 231 ppp Virtual-Template1
no frame-relay inverse-arp
end
!
R1#sh run int f0/0
Building configuration...
Current configuration : 89 bytes
!
interface FastEthernet0/0
ip address 10.0.0.1 255.0.0.0
duplex auto
speed auto
end
!
R1#sh run | s r o
router ospf 1
log-adjacency-changes
network 10.0.0.1 0.0.0.0 area 0
!
R3#sh run int mu1
Building configuration...
Current configuration : 121 bytes
!
interface Multilink1
ip unnumbered FastEthernet0/0
no peer neighbor-route
ppp multilink
ppp multilink group 1
end
!
R3#sh run int Virtual-temp1
Building configuration...
Current configuration : 89 bytes
!
interface Virtual-Template1
no ip address
ppp multilink
ppp multilink group 1
end
!
R3#sh run int s0/0
Building configuration...
Current configuration : 171 bytes
!
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay interface-dlci 233 ppp Virtual-Template1
no frame-relay inverse-arp
end
!
R3#sh run int f0/0
Building configuration...
Current configuration : 89 bytes
!
interface FastEthernet0/0
ip address 20.0.0.1 255.0.0.0
duplex auto
speed auto
end
!
R3#sh run | s r o
router ospf 1
log-adjacency-changes
network 20.0.0.1 0.0.0.0 area 0
!
R1#ping 20.0.0.1 so f0/0 r 10
Type escape sequence to abort.
Sending 10, 100-byte ICMP Echos to 20.0.0.1, timeout is 2 seconds:
Packet sent with a source address of 10.0.0.1
!!!!!!!!!!
Success rate is 100 percent (10/10), round-trip min/avg/max = 116/196/260 ms
Ping me on IM if you don't understand something just in case, because All I presented here was just verification and config I did without much theory details.
BTW... FR LMI Autosense feature is enabled by default in IOS 12.4T which is default in R&S Lab.
HTH....
Deepak Arora
As everyone know that New CCIE Ver 4 Lab consists many new topics. One topic among that all new exiting stuff is Frame-Relay Switching. I have already explained FR Switching in by previous blog post HERE
But that was all basic stuff. Now today we gonna add little more stuff over top of it.
The idea came into mind when one friend sent me a scenario and diagram asking about it's solution in my opinion. He was attempting one mock lab today. So I thought to bring that idea here for everyone.
Here is the quick diagram - Click on image for better view :)
Here were the quick requirements:
1. Use LMI type CISCO over FR-SW
2. On R1 & R3 LMI Autosense should be enabled
3. On R1 & R3 don't use any Static FR Mappings or Inverse ARP
4. Use PPP Over FR between R1 and R3
5. Take any IP Address from any available physical interface
as mentioned in diagram.
6. Keep In mind that in future you are supposed to run Multi-Link
, so plan things accordingly at this initial stage.
Cool...isn't it ? :-)
What would be your solution ?
Here is mine:
Lets configure FR-SW first:
!
frame-relay switching
!
FR-SW#sh run int s0/0
Building configuration...
Current configuration : 191 bytes
!
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 231 interface Serial0/1 233
end
!
FR-SW#
FR-SW#sh run int s0/1
Building configuration...
Current configuration : 191 bytes
!
interface Serial0/1
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 233 interface Serial0/0 231
end
!
FR-SW#
Now lets hop on to R1 and configure it:
R1#sh run int multilink1
Building configuration...
Current configuration : 121 bytes
!
interface Multilink1
ip unnumbered FastEthernet0/0
no peer neighbor-route
ppp multilink
ppp multilink group 1
end
!
R1#sh run int Virtual-Template1
Building configuration...
Current configuration : 89 bytes
!
interface Virtual-Template1
no ip address
ppp multilink
ppp multilink group 1
end
!
R1#sh run int s0/0
Building configuration...
Current configuration : 171 bytes
!
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay interface-dlci 231 ppp Virtual-Template1
no frame-relay inverse-arp
end
!
R1#sh run int f0/0
Building configuration...
Current configuration : 89 bytes
!
interface FastEthernet0/0
ip address 10.0.0.1 255.0.0.0
duplex auto
speed auto
end
!
R1#sh run | s r o
router ospf 1
log-adjacency-changes
network 10.0.0.1 0.0.0.0 area 0
!
Now Lets hop on to R3:
R3#sh run int mu1
Building configuration...
Current configuration : 121 bytes
!
interface Multilink1
ip unnumbered FastEthernet0/0
no peer neighbor-route
ppp multilink
ppp multilink group 1
end
!
R3#sh run int Virtual-temp1
Building configuration...
Current configuration : 89 bytes
!
interface Virtual-Template1
no ip address
ppp multilink
ppp multilink group 1
end
!
R3#sh run int s0/0
Building configuration...
Current configuration : 171 bytes
!
interface Serial0/0
no ip address
encapsulation frame-relay
clock rate 2000000
frame-relay interface-dlci 233 ppp Virtual-Template1
no frame-relay inverse-arp
end
!
R3#sh run int f0/0
Building configuration...
Current configuration : 89 bytes
!
interface FastEthernet0/0
ip address 20.0.0.1 255.0.0.0
duplex auto
speed auto
end
!
R3#sh run | s r o
router ospf 1
log-adjacency-changes
network 20.0.0.1 0.0.0.0 area 0
!
Lets verify reach-ability from R1's Ethernet to R2's Ethernet interface since we disabled PPP peer neighbor route:
R1#ping 20.0.0.1 so f0/0 r 10
Type escape sequence to abort.
Sending 10, 100-byte ICMP Echos to 20.0.0.1, timeout is 2 seconds:
Packet sent with a source address of 10.0.0.1
!!!!!!!!!!
Success rate is 100 percent (10/10), round-trip min/avg/max = 116/196/260 ms
Ping me on IM if you don't understand something just in case, because All I presented here was just verification and config I did without much theory details.
BTW... FR LMI Autosense feature is enabled by default in IOS 12.4T which is default in R&S Lab.
HTH....
Deepak Arora
Wednesday, August 25, 2010
Some Very Helpful Places To Find Help With CCIE Queries
http://www.mail-archive.com/ccie_rs@onlinestudylist.com/ <-- IPX Support Forum For R&S
http://www.mail-archive.com/ccie_sp@onlinestudylist.com/ <-- IPX Support Forum For SP
http://www.groupstudy.com/archives/ <-- Group Study Support Forum
http://www.routerie.com/ <-- CCBootcamp R&S/SP Support Forum
http://www.ieoc.com/ <-- INE Support Forum
Also you can find help under Cisco Learning Website Study Groups
HTH...
Best Regards,
Deepak Arora
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