Can someone help me to troubleshoot Pakcet Tracer wireless access

workfrom925

I'm doing Cisco NetAcademy PT Activity 7.3.2 Configuring wireless LAN Access. I went through all the steps. The Packet Tracer status says it's 100% complete. But the wireless router just doesn't talk to the network.

Please delete the '.doc' from the file name to run it in Packet Tracer. TIA.

PT Activity 7.3.2 Configuring Wireless LAN Access - incomplete.pka.doc

theodoxa

There is nothing that I can find wrong with the configuration and I am able to ping from PC3 to PC1 and PC2, but not vice-versa. Best I can figure, the Linksys Wireless Router has some kind of default firewall that acts like NAT (only established traffic allowed inbound on the WAN port). The firewall configuration options are locked, so I cannot test this.

workfrom925

theodoxa wrote: »

There is nothing that I can find wrong with the configuration and I am able to ping from PC3 to PC1 and PC2, but not vice-versa. Best I can figure, the Linksys Wireless Router has some kind of default firewall that acts like NAT (only established traffic allowed inbound on the WAN port). The firewall configuration options are locked, so I cannot test this.

Ah. That's why. Thanks.

Is this really how to configure a wireless AS at companies? What's the purpose of VLAN 88? Can we do without VLAN 88?

theodoxa

workfrom925 wrote: »

Ah. That's why. Thanks.

Is this really how to configure a wireless AS at companies? What's the purpose of VLAN 88? Can we do without VLAN 88?

VLAN 88 carries traffic originating from the wireless network. This would likely be done for security reasons. By keeping the wireless users on a separate VLAN, you could limit their access to only specific resources. In this case, it doesn't appear there are any ACLs blocking access from one VLAN to another, but in real life there probably would be.

MosGuy

I found that some Packet Tracer labs can be a little buggy with the newer versions. I re-created the lab with an older version of PT and I got full connectivity between the PCs (see screen shot: PC3 to PC1)

workfrom925

MosGuy wrote: »

I found that some Packet Tracer labs can be a little buggy with the newer versions. I re-created the lab with an older version of PT and I got full connectivity between the PCs (see screen shot: PC3 to PC1)

I'm running PT 5.3.3.0019. Can you upload the PT file for this lab? I'd like to run it and analyze a bit if I can.

MosGuy

workfrom925 wrote: »

I'm running PT 5.3.3.0019. Can you upload the PT file for this lab? I'd like to run it and analyze a bit if I can.

It seems related to the version. Why the older ones work and newer versions don't always is the mystery. I found it mostly with wireless, which I why I keep three PT versions installed. I tested on 5.3.3 and 6.0.1 with no luck either.

I didn't make any change to the config. After work I'll re-do the lab and upload.

MosGuy

File: Configuring Wireless LAN Access.pkt.DOC

Ltat42a

I made a topology with wireless, but without the Linksys Wireless router. See the attached. Remove the ".doc" from the filename.

hth

workfrom925

MosGuy wrote: »

File: Configuring Wireless LAN Access.pkt.DOC

Thanks. Just as I expected, I can't ping from PC1 inside the network to PC3, the wireless host. Maybe it's a PT bug.

MosGuy

workfrom925 wrote: »

Thanks. Just as I expected, I can't ping from PC1 inside the network to PC3, the wireless host. Maybe it's a PT bug.

The important thing is knowing it's something in PT, rather than an error configuration wise. Best to pretend PING was successfully and move onto other labs