Author Topic: CCNP Switch Labs: LACP with STP Lab  (Read 5952 times)

Offline Abool

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CCNP Switch Labs: LACP with STP Lab
« on: January 18, 2012, 06:47:35 AM »
SWTCH LAB



Tasks

1. Use non proprietary mode of aggregation
with Switch B  being the  initiator

2. Use non proprietary trunking and
no negotiation

3. Restrict only to vlans needed

4. SVI on vlan 1 with  ip 10.10.10.2
sbnm 255.255.255.0

5. Configure switch A so that nodes other
side of Router C  are accessible

6. Make switch B the root

Answer and Explanation:

Below is a good solution commented by toy_man123. Please say thank to him!

Each of these vlans has one host each on its port
SVI on vlan 1 ? ip 192.168.1.11 with snm

Switch B ?
Ports 3, 4 connected to ports 3 and 4 on Switch A

Port 15 connected to Port on Router.

Tasks to do

1. Use non proprietary mode of aggregation with Switch B being the initiator
? Assumed use LACP with B being in Active mode

2. Use non proprietary trunking and no negotiation
? Assumed use switchport mode trunk and switchport trunk encapsulation dot1q

3. Restrict only to vlans needed
? Assumed either vtp pruning or allowed vlan list. vtp pruning command did not seem to work on the simulator so landed using allowed vlan list

4. SVI on vlan 1 with some ip and subnet given

5. Configure switch A so that nodes other side of Router C are accessible
? Assumed this to mean that on switch A default gatway has to be configured.

6. Make switch B the root
? Could not get this to work. Exam hung when I tried the command
spanning-tree vlan 1,21-23 priority 4096
So passed on this configuration. Anyone else got this correct

What I tried ..
on Switch A
verify with show run if you need to create vlans 21-23

int range fa0/9 ? 10
switchport mode access
switchport access vlan 21
spanning-tree portfast
no shut

int range fa0/13 ? 14
switchport mode access
switchport access vlan 22
spanning-tree portfast
no shut

int range fa0/16 ? 16
switchport mode access
switchport access vlan 23
spanning-tree portfast
no shut

int range fa0/3 ? 4
channel-protocol lacp
channel group 1 mode passive
no shut

int port-channel 1
switchport mode trunk
switchport trunk encapsulation dot1q
spanning-tree allowed vlans 1,21-23
no shut

int vlan 1
ip address x.y.z.11 255.a.b.c
no shut

On switch B run the command show cdp neighbors detail and get the ip address of port from router C.

Now use this ip address of port of router C to configure as default gateway on Switch A
SA(config)# ip default-gateway 192.168.1.1

On switch B do only the channel group and port-channel stuff
Only mode is active instead of passive.

copy run start did not work. Tried combos of wr, copy running-config startup-config, copy system:running-config nvram:startup-config. All variations did not work.

Got some errors on mismatch of native VLAN. Switch B had some ports on vlan 98 configured for native vlan. Tried setting native vlan on Port-channel 1 on switch B to 1. Configuration command took but errors still were occuring. Ran out of time I had allocated so gave up.

Source: http: //packettracer.net/2011/09/10/bcmsn-new-lacp-stp-lab/
« Last Edit: May 02, 2017, 12:51:33 AM by certforumz »