0
votes
1answer
58 views

Cisco IOS: Prevent Inter-VLAN IPv6 Network Solicitation messages

I have a Cisco 3825 router that (among other things) functions as a gateway to the internet. I have two VLANS, but only one of them should have access to the internet. VLAN10: network = ...
1
vote
1answer
49 views

How can we better pinpoint instability issues on our network?

We have a medium-sized network of 600 users, all on Cisco switches. Where the users are allowed to plug in routers, etc. on the endpoints, so that they can use wireless and/or multiple devices in ...
0
votes
1answer
71 views

Cisco IOS, restrict IP addresses per ethernet port #

I am configuring a Cisco 881, and am interested in restricting individual ports on the LAN (FastEthernet 0-3). I would like to be able to limit the IP addresses that someone can use based on which ...
5
votes
1answer
254 views

Tag/Untag VLANs from Port Perspective on HP Switch

I'm familiar with vlans and tagging, and we usually use the command line interface for our HP Layer 3 switches. I've done quite a few: vlan 10 untagged 21 I've always wondered if this was possible ...
2
votes
1answer
331 views

Can a Private VLAN trunk also trunk normal VLANS

Imagine a topology with Switch A and Switch B trunked together. Also imagine a router on a stick attached to Switch A that routes for these VLANs. The VLANs are as follows: VLAN 1 = 10.1.1.0/24 ...
-1
votes
1answer
78 views

Using PVLANs with normal VLANs in a trunked environment

Assume a trunked environment with two switches, S1 and S2. The swtiches are connected with a trunk port designed to pass VLAN 26. What would happen if VLAN 26 on S2 is configured as a private-vlan ...
0
votes
2answers
395 views

Cisco: show run vlan # vs show run int vlan #

What is the difference between the two commands? Show run vlan # = blank output show run int vlan # = vlan configuration Likewise: show vlans No virutal LANs configured show vlan ...
2
votes
1answer
1k views

Cisco 3925/k9 sub-interface vlan support

I've got a brand new cisco router 3925/k9. I wanted to set up a router on a stick on my network, but it turns out it doesn't support vlan sub-interfaces. I did it multiple times in gns3 simulator on ...
1
vote
1answer
191 views

Trunk port wont accept the Printer vlan

I have three switches daisy-chained together and I have a printer vlan serviced with a print server off the core (1st) switch. the middle switch trunk port will not accept the printer vlan. I issue ...
1
vote
0answers
647 views

Max STP instances reached on Cisco 2950 despite not actively using 64

I have a Cisco 5505 switch running CatOS connected to a number of Cisco 2950 switches running IOS. The 5505 switch supports a large number of vlans (I'm guessing 1005), yet the 2950s only support a ...
0
votes
1answer
1k views

Cisco IOS: One SSID doesn't pull from the correct DHCP pool

I have 2 SSID setup in my Cisco 881W router. Our internal ssid pulls from the right DHCP pool (wpool), while our guest SSID does not pull from the right pool (gpool) Here is the router config ! ! ...
5
votes
2answers
736 views

Cisco IOS: Segregating VLANS

I am trying to segregate the traffic on the VLANs, as one is our visitor VLAN (VLAN 3 is the guest lan). It is a Cisco 881W router. Here is my VLAN configuration: interface Vlan2 ip address ...
1
vote
2answers
792 views

Management VLAN Cisco Catalyst

I have configured a couple of VLANs on a Cisco Catalyst switch with IOS, i will put all the ports that clients is connected to, into these VLANs. I want to configure the native VLAN [vlan 1] as ...
5
votes
1answer
498 views

Setting spanning tree link “priorities” in Cisco switches

I've got a pair of C2960G-48 switches (running IOS 12.2(46)SE, if it makes a difference) with redundant trunks in place. On these switches there are a bunch of VLANs that carry quite heavy traffic at ...
0
votes
1answer
872 views

Configuration of Switch Module (WIC) on Cisco 3800

I have a 4 port module in my 3800 router, an HWIC-4ESW, that acts like a switch. I can configure IPs on each port if I do something like the following: conf t int F1/1 switchport access vlan 20 ...