Cisco Switching/Routing :: Trunking Between Catalyst 2950 Switches?
May 14, 2012
have setup a small lab as per CBTNuggets. Everything was going well until I introduced a second switch to create a trunk. Now I cannot ping between my two switches. Both show operational mode as down:
I have tried to allow all vlans or vlan 1 specifically and the output of the above doesn't seem to change. I am wondering if there is something in the config-register that is preventing trunking, but I don't really know enough yet!
The output of my second switch is identical to this one, the only difference is that I have it configured as a vtp client.
I have a number of class-'c's as a hand-off from my data center fiber to my 2960, which then sprawls the racks with about many 2950 switches, mostly 20 machines per switch. To allow machines on one 2950 to push data to another 2950 without routing back to my ISP's router(which costs money for bandwidth) isn't is possible to trunk one port on each 2950 to another 2950 and adding a addititional vlan8 to them. Then data jumps from 2950 to 2950 without going back to the 2960 or mainly not going back to my ISP's router. Is this the correct way to accoplish this with extra vlan and trunking the 2950's to each other or am I looking at this all wrong?
I have a above said switch at my remote office (600KM) which is connected with L2 Point to Point leased line. Both the ends I have Cisco 3950 catalyst switches with Vlans configured at both the ends. Now, for obvious reasons I should remove the other end 3950 switch and replace with Cisco 2950 switch. The other end 3950 is having 4 Vlans configured on 4 ports. Now my requirement is, I should configure 3 Vlans (one for P2P, one for 10 Desktops and one for to bring traffic from other network).
I bought refurbished Catalyst 2950. I followed all steps(even ip address and subnetmask and ..etc) guided in [URL] no thing happen, my computer doesn't connect internet. I guess switch has no routing.. Before bought that, i thought it is plug and play type. And now having some serious issue which i have to configure via telnet and/or ssh.
Configuring a network with Rapid Spanning Tree Protocol. There's a combination of Cisco 3650s, 2950 and 2960 switches. It is a flat Layer 2 network with a single VLAN. CLI configuration?
I have a customers Catalsyt 2950 switch come in for the configuration to be cleaned to factoy default, using the link below removed the customers banner and login information whitch worked
[URL]
When i restart the switch and enter Enable mode I'm prompted with the password which i used when following the link above,
I want to remove all passwords so when the switch is redeployed to the next site who ever the engineer is that is going to be reconfiguring the switch is able to access privlage mode with out the password promt.
I'm having trouble with a Cisco Catalyst 2950 Series Switch where by I'm following the procedure from Cisco's web site to remove the Banner and login information, url..
Each command is being accepted by the switch from following the information given within the help sheet above,the problem i have now is when i turn the power off then turn the switch back on I'm still getting the banner and login information even though i have follwed Cisco's help correctly.
I am not able to successfully accomplish the password reset function. This 2950 does not respond to the mode button held down at power up or to sending a briak. I have tried both several times and the switch continues to fully boot. [URL]
C2950 Boot Loader (C2950-HBOOT-M) Version 12.1(11r)EA1, RELEASE SOFTWARE (fc1)Compiled Mon 22-Jul-02 17:18 by antoninoWS-C2950G-48-EI starting...Base ethernet MAC Address: 00:0b:fd:a1:4f:80Xmodem file system is available.Initializing
Using Network Assistant in XP, plugged ethernet cable to first front port and keep getting "Failed to get Default Gateway. Check your security settings to make sure the current Java Virtual Machine is not prevented from running commands.", I have tried reducing secruity to nothing but I still get the same problem.
I also have an official cisco console cable and tried that, but Hyperterminal just does not pick it up when plugged in. I have left the IP dynamic, turned off all netowork adapters apart from ethernet, set the baud rate etc... correctly, still no joy.
I have a connection between switches, There are a 3560 (Gi0/37) and a 2960 (Gi0/1), the problem is in the port Gi0/37 of the 3560 switch and this is the log. [code]
I dont understand what is the problem, actually i have added the command power inline never on the port and the problem is solved, but we haven´t changed configuration.
We have two Cisco switches with one 3560 and one 3750 we have created a new Vlan 4 with IP 10.1.3.x 255.255.255.0 - no shut then assigne to gi 2/0/46 on the 3560 Vlan 4 ip address 10.1.3.x 255.255.255.0 no shut then assign to FA0/45. All interfaces are up up along with the Vlan up up, we can ping the local IP address bu not able to pint the other switch.
which models of HP ProCurve or Dell PowerConnect support 64-bit IF-MIB counters, or for that matter any other manufacturer (Zyxel?) (snmpv2 or v3, OID .1.3.6.1.2.1.31.1.1.1.6)I believe pretty much any Cisco Catalyst above a 2950 do, however don't believe any of the SG series do. I realize I could pick up a 2960G for $1500-2k and be good to go, but I forsee a larger switch purchase in the future, but still could use a switch in the meantime that was able to allow accurate monitoring of closet uplink bandwidth?
I have a server windows 2008 that I would like to have a nic teaming configuration, the server has two nics, each nic is connected to a different switch. One is connected to cisco 2960 and the other is connected to cisco 2950. I have read here in forums about nic teaming but using the same switch. I have not found using different switch. Is this possible?
I am aware that private-vlans are not supported on edge switches like 2960 series - so my question is would it be possibel to ceate private vlans on say just the core switch which would be a 3570 or 4506 that supports private vlans and then just trunk these to the edge like normal vlans?what I need to achive is to have edge port not able to communicate to each other even across switches - which cannot be done using 'protected' port so need the private vlan feature?
I am looking into the possibility of using private vlan's for some dmz implementations however I do have what may be some very rudimentary questions. It seems straightforward how to configure the primary/secondary vlan configuration as well as associating them. However in my case I would be looking to configure the PVLAN on a 6500-vss platform acting as the router while all of the hosts which I would desire to have in the isolated vlan would be spread out across a number of older Cisco switches which only support "protected port" setup or Procurve switches all of which I do not have budget to replace with something newer. So in my scenario I would have a 6500 connected by trunk to multiple switches which only support a protected port setup such as a Procurve (top of rack) or a Cisco 2950. As the Procurve or 2950 would not support Private VLAN setup, do I then just configure the secondary vlan to be allowed across the trunk from the 6500, configure that vlan on the Procurve or 2950 (as vtp will not foward the info for the secondary vlan) and assign that vlan to the host port as well as setting it as a protected port and this will communicate just fine across the trunk to the router as well as stopping the protected port in top of rack switch 1 from being able to communicate to a protected port in top of rack 2,3,etc? If the above scenario is what needs to be done, do I just use a regular trunk or do I have to use a PVLAN trunk?
I just purchased a SG300-10 switch and loaded the newest 1.27 firmware on it. Setup my VLANS and trunks but I have this weird issue. My setup:
I have the SG300-10 as my main switch and changed it over to L3 so it can be my main core in my small network. On port 1, vlan 200 is setup as my native PVID untagged and I have it set to trunk vlan's 210(LAN network), 220 (management vlan) tagged over to a Dell powerconnect 5224 24port switch. On port 1 of the Dell switch, I have it setup as a trunk there as well with the same setup (native PVID vlan set to 200 untagged, trunking 210 and 220 tagged).
We have 12 Catalyst Blade Switches 3020 for HP running IOS Version 12.2(55)SE. In the configuration of these switches I see the statement shown below.
no spanning-tree vlan 34,45-55,70,600,643,840,843-850
The 12 blade switches are configured as VTP clients and running VTP V2. I did not configure the statement shown above. It appered by itself. And even if I delete it, it will reapper. (The blade switches are interconnected to two 6509s. The two 6509s are the STP root and VTP bridges. I configure Vlans and STP on the 6509s).
why the statement above appers on the blade switches 3020s?
I mean I use other Cisco switches such as 3750s and 3560s and I have never seen the statement above appear by itself.
why the AutoQoS macro does not implement "priority-queue out" when configured on the 3750 platform running certain versions of software. The only other platform I have experience with AutoQos is on the 4500 and it enables priority queuing as expected. So what's up with autoqos on the 3750 on version 12.2(35)SE5?
When it comes to configuring QoS on campus user/phone access ports there are some important settings that can and should be considered but one can argue that enabling the priority queue is the single most impactful or important command. So I was very surprised and concerned when I didn't see priority-queue out. Cisco describes AutoQoS as a simple, quick way of deploying QoS on the LAN and it precludes you from having to learn all of the differences between hardware platforms. But is it true that this tool produces an incomplete config solution? Let me know if I am missing something.
Here is an example of what AutoQoS produces when applied to a 4507 with WS-X4648-RJ45V+E:(other interface commands are left out for simplicity)
interface GigabitEthernet5/25description XYZ switchport mode accessauto qos voip cisco-phoneqos trust device cisco-phoneservice-policy input AutoQos-VoIP-Input-Cos-Policyservice-policy output AutoQos-VoIP-Output-Policy policy-map AutoQos-VoIP-Output-Policy class AutoQos-VoIP-Bearer-QosGroup set dscp ef
[code]......
Here is an example of what AutoQoS produces when applied to a 3750 running version 12.2.(35)SE5: (no priority-queue out)
I have a customer with Cisco 7940 and 7960 IP phones that they do not plan to replace. They do want a new LAN and are looking at the Catalyst WS-C2960S-48FPD-L and WS-C2960S-24PD-L as access layer devices.
these switches support the Cisco pre-standard PoE required by the 7940 and 7960 IP phones.
We just purchased (3) WS-C2960-24CT-S and (1) 3750G, what's the proper way to cascade this switches? Do I need to use crossover cables from port to port? Do I need to change the mode for the ports to use?
We have a couple of Cisco switches and connected a (Windows 7) laptop to one of them and it gets its IP address from a DHCP server.I can now ping the IP from all of the switches, no problem, also not when I log on to the core switch in the same VLAN as both notebooks. But from my (Windows 7) laptop, which is in the same VLAN as the target laptop, I cannot ping it.
I checked, default gateway is good on both sides, as are DNS servers.
I've been conducting research on configuring 3 distribution switches in my network which are Cisco Catalyst 4507's to communicate with our core over layer 3. Our core switch which is already configured at Layer 3 for intervlan routing is a Cisco Catalyst 6509.
I've got the configuration portion complete and all devices are able to communicate my only question is about QoS. Do I have to configure QoS at the layer 3 interfaces for voice, if so how is that completed. We have several vlans and separate the vlans for each building by voice and data. We only configure ports on the access switches with voice vlans for QoS and we use the auto qos option on these interfaces.
Are there any best practices for preventative maintenance on Catalyst Chassis switches. Looking to build a PMI schedule for a customer. Or is there evidence not to perform it at all. Things like re-seating line cards, cleaning fan exhausts, etc.
what is the difference between Cisco Nexus switches and the usual catalyst 3750 switches.I do understand the operating system in both these are different.
When will we suggest using Cisco nexus instead of usual Cisco switches? Also what interface does Cisco nexus like 5548 come with , is it both copper and fiber?
Does a portable RPS device either from Cisco or another manufacturer exists, that would allow you to move primary power for a switch without causing an outage? I realize that for the Catalyst 3560 for example, you can get an RPS 2300 or 675, but my understanding is that these are made for a more permanent installation, not to mention rather costly.
It looks like the RPS 675 is rather inexpensive after all, especially in the secondary market, but still rather large for toting around.
