Go CCIE Go!! - A Cisco Certified Internetwork Expert

Damn, now why is this happening?
*Mar 2 09:07:37.514: %SW_MATM-4-MACFLAP_NOTIF: Host 0014.6a0a.4e61 in vlan 100 is flapping between port Fa0/14 and port Fa0/19 *Mar 2 09:07:37.514: %SW_MATM-4-MACFLAP_NOTIF: Host 0013.1acb.d8c1 in vlan 200 is flapping between port Fa0/20 and port Fa0/14 *Mar 2 09:07:37.514: %SW_MATM-4-MACFLAP_NOTIF: Host 0014.6a0a.4e61 in vlan 200 is flapping between port Fa0/14 and port Fa0/20 *Mar 2 09:07:37.581: %SW_MATM-4-MACFLAP_NOTIF: Host 0013.1acb.d8c1 in vlan 100 is flapping between port Fa0/19 and port F0/14 Rack1SW2# *Mar 2 09:07:52.614: %SW_MATM-4-MACFLAP_NOTIF: Host 0014.6a0a.4e61 in vlan 200 is flapping between port Fa0/14 and port Fa0/20 *Mar 2 09:07:52.614: %SW_MATM-4-MACFLAP_NOTIF: Host 0014.6a0a.4e61 in vlan 100 is flapping between port Fa0/14 and port Fa0/19 *Mar 2 09:07:52.614: %SW_MATM-4-MACFLAP_NOTIF: Host 0013.1acb.d8c1 in vlan 200 is flapping between port Fa0/20 and port Fa0/14 *Mar 2 09:07:52.681: %SW_MATM-4-MACFLAP_NOTIF: Host 0013.1acb.d8c1 in vlan 100 is flapping between port Fa0/19 and port Fa0/14 Rack1SW2# *Mar 2 09:08:07.713: %SW_MATM-4-MACFLAP_NOTIF: Host 0014.6a0a.4e61 in vlan 200 is flapping between port Fa0/14 and port Fa0/20 *Mar 2 09:08:07.713: %SW_MATM-4-MACFLAP_NOTIF: Host 0014.6a0a.4e61 in vlan 100 is flapping between port Fa0/14 and port Fa0/19 *Mar 2 09:08:07.713: %SW_MATM-4-MACFLAP_NOTIF: Host 0013.1acb.d8c1 in vlan 200 is flapping between port Fa0/20 and port Fa0/14 *Mar 2 09:08:07.780: %SW_MATM-4-MACFLAP_NOTIF: Host 0013.1acb.d8c1 in vlan 100 is flapping between port Fa0/19 and port Fa0/14 Rack1SW2# *Mar 2 09:08:22.813: %SW_MATM-4-MACFLAP_NOTIF: Host 0014.6a0a.4e61 in vlan 100 is flapping between port Fa0/14 and port Fa0/19 *Mar 2 09:08:22.813: %SW_MATM-4-MACFLAP_NOTIF: Host 0013.1acb.d8c1 in vlan 200 is flapping between port Fa0/20 and port Fa0/14 *Mar 2 09:08:22.813: %SW_MATM-4-MACFLAP_NOTIF: Host 0014.6a0a.4e61 in vlan 200 is flapping between port Fa0/14 and port Fa0/20 *Mar 2 09:08:22.880: %SW_MATM-4-MACFLAP_NOTIF: Host 0013.1acb.d8c1 in vlan 100 is flapping between port Fa0/19 and port Fa0/14 Rack1SW2#
On Fri, Mar 21, 2008 at 4:12 PM, Michael Whittle wrote:
> Is anyone as frustrated as I am with the switching questions from Lab 16 > in the InternetworkExpert labs? > 1.1 > > This question says that SW1 and SW2 shouldn’t have VLAN45 created on it. > In later questions you find out that they expect you to configure all the > switches in VTP transparent mode. That’s fine but R4 and R5 both in VLAN45 > need to communicate with each other. R4 is connected to SW4 on Fa0/4 and R5 > is connected to SW3 on Fa0/5. There is no trunks or access links in VLAN45 > between SW3 and SW4 so it would need to be via the access links to SW1 and > SW2. The question says not to create VLAN45 on them so I would have thought > a tunnel would be needed. The solution makes no mention of this. Only > includes VLAN100 and VLAN200 and that’s all. Why are these VLAN’s not > created in the 1.4 solution instead? It’s just confusing matters. > > The solution also shows a Vlan3003 interface created with an IP address. > This isn’t shown in the diagram and wasn’t in the question. Any ideas why > this was done? > > 1.2. > > VLAN3003 only exists on SW3 so why does the solution say it needs to be > configured on all switches and trunks? > > 1.3. > > The first question says VLAN45 shouldn’t be created on SW1 and SW2 but > then it says SW1 Fa0/9 and Fa0/10 should be in VLAN45. What is happening > here? > > 1.4. > > In this question I thought this would provide the tunnel for VLAN45 > between SW3 and SW4. I configured VLAN45 on the two ports facing SW1 and SW2 > on both SW3 and SW4 respectively. The solution only mentions the > configuration of VLAN45 on the access ports on SW3 and SW4. The tunnel > configuration isn’t mentioned. I assumed the VLAN100 and VLAN200 must be > used for the two tunnels so I configured it as below and I have connectivity > between R4 and R5 now. VLAN100 and VLAN200 isn’t mentioned in the questions > or diagrams. Are you free to just use anything if it’s not mentioned? > > Solution: > > Rack1SW1#sh run int fa0/16 > Building configuration… > > Current configuration : 181 bytes > ! > interface FastEthernet0/16 > description Link to Rack1SW3 | FastEthernet0/13 > switchport access vlan 100 > switchport mode dot1q-tunnel > l2protocol-tunnel cdp > no cdp enable > end > > Rack1SW1#sh run int fa0/17 > Building configuration… > > Current configuration : 181 bytes > ! > interface FastEthernet0/17 > description Link to Rack1SW3 | FastEthernet0/14 > switchport access vlan 200 > switchport mode dot1q-tunnel > l2protocol-tunnel cdp > no cdp enable > end > > Rack1SW2#sh run int fa0/19 > Building configuration… > > Current configuration : 179 bytes > ! > interface FastEthernet0/19 > description Link to Rack1SW4 | FastEthernet0/16 > switchport access vlan 100 > switchport mode dot1q-tunnel > l2protocol-tunnel cdp > no cdp enable > end > > Rack1SW2#sh run int fa0/20 > Building configuration… > > Current configuration : 179 bytes > ! > interface FastEthernet0/20 > description Link to Rack1SW4 | FastEthernet0/17 > switchport access vlan 200 > switchport mode dot1q-tunnel > l2protocol-tunnel cdp > no cdp enable > end > > I’m moving onto the Frame-Relay section now… just needed that little > rant. It’s such a pain when the questions and solutions have mistakes. ;( > > Regards, > Mike