From: CCIE Reader (myolddays@yahoo.co.in)
Date: Fri May 04 2007 - 09:41:19 ART
Hi,
I am struck on dot1q tunelling while doing my IE4.0 Lab7-sec 1.4.
R3 and R1 shud appear as though directly connected to SW2 by configuring L2PT of CDP.
I did this and I cud see CDP info of SW2 on both R1 and R3.. but not on SW2.
I have attached my testbed port details and configs here..
Have a look and let me know where am missing.
Thanks.
---------------------------------
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R1,R3 connected to F0/1,F0/3 ports of SW1. SW1 and SW4 trunked via F0/11.
SW4 f0/8,f0/9 connected to SW2 f0/8,f0/9..
SW2 f0/8 is configured with no switchport and given the IP in same subnet as R3.
SW2 f0/9 is configured with no switchport and given the IP in same subnet as R1.
SW1 f0/1,f0/3 is configured to do dot1q tunnel
SW4 f0/8,f0/9 is configured to do dot1q tunnel
am unable to see R1,R3 info on SW2.
whereas am able to see SW2 info on both R1 and R3
System MTU is set to 1504. Also am unable to ping between R1,SW2 and R3,SW2.
SW1:
==========
interface FastEthernet0/1
switchport access vlan 100
switchport mode dot1q-tunnel
l2protocol-tunnel cdp
no cdp enable
end
SW1#sh run int f0/3
Building configuration...
Current configuration : 129 bytes
!
interface FastEthernet0/3
switchport access vlan 101
switchport mode dot1q-tunnel
l2protocol-tunnel cdp
no cdp enable
end
SW1#sh run int f0/11
Building configuration...
Current configuration : 107 bytes
!
interface FastEthernet0/11
switchport trunk encapsulation dot1q
switchport mode dynamic desirable
end
SW1#
SW1#sh cdp ne
SW1#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone
Device ID Local Intrfce Holdtme Capability Platform Port ID
SW4 Fas 0/13 135 S I WS-C3550- Fas 0/13
SW4 Fas 0/12 135 S I WS-C3550- Fas 0/12
SW4 Fas 0/11 155 S I WS-C3550- Fas 0/11
SW2 Fas 0/24 178 R S I WS-C3550- Fas 0/24
SW2 Fas 0/23 177 R S I WS-C3550- Fas 0/23
SW2 Fas 0/22 177 R S I WS-C3550- Fas 0/22
SW3 Fas 0/9 131 S I WS-C3550- Fas 0/9
SW3 Fas 0/8 131 S I WS-C3550- Fas 0/8
SW3 Fas 0/7 131 S I WS-C3550- Fas 0/7
SW1#
SW4:
===========
interface FastEthernet0/11
switchport trunk encapsulation dot1q
switchport mode dynamic desirable
end
SW4#sh run int f0/8
Building configuration...
Current configuration : 129 bytes
!
interface FastEthernet0/8
switchport access vlan 101
switchport mode dot1q-tunnel
l2protocol-tunnel cdp
no cdp enable
end
SW4#sh run int f0/9
Building configuration...
Current configuration : 129 bytes
!
interface FastEthernet0/9
switchport access vlan 100
switchport mode dot1q-tunnel
l2protocol-tunnel cdp
no cdp enable
end
SW4#
SW4#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone
Device ID Local Intrfce Holdtme Capability Platform Port ID
SW1 Fas 0/13 137 S I WS-C3560-2Fas 0/13
SW1 Fas 0/12 137 S I WS-C3560-2Fas 0/12
SW1 Fas 0/11 127 S I WS-C3560-2Fas 0/11
SW2 Fas 0/7 174 R S I WS-C3550-2Fas 0/7
SW3 Fas 0/23 138 S I WS-C3550-2Fas 0/23
SW3 Fas 0/24 138 S I WS-C3550-2Fas 0/24
SW3 Fas 0/22 138 S I WS-C3550-2Fas 0/22
SW4#
SW2:
SW2#sh run int f0/8
Building configuration...
Current configuration : 85 bytes
!
interface FastEthernet0/8
no switchport
ip address 163.1.38.8 255.255.255.0
end
SW2#sh run int f0/9
Building configuration...
Current configuration : 85 bytes
!
interface FastEthernet0/9
no switchport
ip address 163.1.18.8 255.255.255.0
end
SW2#
SW2#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone
Device ID Local Intrfce Holdtme Capability Platform Port ID
SW4 Fas 0/7 130 S I WS-C3550-2Fas 0/7
BB2 Fas 0/21 157 R 2610 Eth 0/0
SW1 Fas 0/24 155 S I WS-C3560-2Fas 0/24
SW1 Fas 0/23 154 S I WS-C3560-2Fas 0/23
SW1 Fas 0/22 154 S I WS-C3560-2Fas 0/22
SW3 Fas 0/13 166 S I WS-C3550-2Fas 0/13
SW3 Fas 0/12 166 S I WS-C3550-2Fas 0/12
SW3 Fas 0/11 166 S I WS-C3550-2Fas 0/11
SW2#
R1:
===========
R1#sh run int f1/0
Building configuration...
Current configuration : 95 bytes
!
interface FastEthernet1/0
ip address 163.1.18.1 255.255.255.0
duplex auto
speed auto
end
R1#sh cdp ne
R1#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater
Device ID Local Intrfce Holdtme Capability Platform Port ID
SW2 Fas 1/0 176 R S I WS-C3550-2Fas 0/9
R1#
R3:
================
R3#sh run int f0/0
Building configuration...
Current configuration : 95 bytes
!
interface FastEthernet0/0
ip address 163.1.38.3 255.255.255.0
duplex auto
speed auto
end
R3#sh cdp ne
R3#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater
Device ID Local Intrfce Holdtme Capability Platform Port ID
SW2 Fas 0/0 176 R S I WS-C3550-2Fas 0/8
R3#
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