I wan to migrate from a router 2800 to L3 switch 3750G , the thing is that we have several vlans and we use a router sometimes with each interface configure with correspoinding vlan subnet ip to route traffic between vlans there is no static or dynamic routing only directly connected interfaces on router routing traffic to each other ?How would i configure a L3 switch interface for simillar functionality , below is my current router configuration
! ip domain name yourdomain.com multilink bundle-name authenticated ! vtp mode transparent
I have an ASA 5510 that I want to connect to 2 isp (one of my private network uses the isp1, and all others the isp2). Excluding the 5510 does not accept PBR(policy based routing), i saw that you could put a router, like cisco 2811 in front of the ISP. my questions are : can i put a switch 3750 in place of the 2811 router? , I have vpn connections in isp1, this architecture is compatible?
Seeing very strange behaviour my 2811 Router is sitting behind 3650 switch, when the link between switch and router is trunk the router start rebooting itself, to test i changed to access mode then I can see ip address of router on cdp neig de or else not seeing ip address of router.
we have cisco 2960 switch which is connected to a cisco 2811 router. flapping issue between these two devices??
The following actions i have taken, but no result.. I have changed cables. have set speed to 100 and duplex full on both the interfaces but the interfaces are showing up up still not getting connectivity. same i have to auto on both sides still no result what configurations should i set to resolve this issue...?
I'm having issues with SSH on my 3750G-12S. I'm not able to SSH to another switch when VRFs are configured.I've tried ip ssh source-interface, ssh -vrf doesn't exsist and I've upgraded the IOS to the latest version.
Interface Speed Local pair Pair length Remote pair Pair status --------- ----- ---------- ------------------ ----------- -------------------- Gi0/40 100M Pair A 2 +/- 4 meters Pair A Normal Pair B 2 +/- 4 meters Pair B Normal Pair C 2 +/- 4 meters Pair C Short Pair D 2 +/- 4 meters Pair D Short
From the command
test cable-diagnostics tdr int gi 0/40
It's normal?If not, then. the problem is on the cable or on one of the interfaces?The interface is connected between a fastethenert on a 2811 router and a 3560-48 switch.The cable is a straight through cat 5e cable. (I have changed several cables with same result).
I am trying to buy a GLC-SX-MM SFP module via Fed Stock, and I keep getting a GLX-SX-MM. What is the difference between these two part numbers? I can't find it on the Cisco Web site and eve a search of Google comes up relatively fruitless! Is the GLX compatible with my 3750G-24PS switch?
I am having a switch 3750G (WS-C3750G-24TS-S) running a software version (c3750-ipservicesk9-mz.122-55.SE6.bin) and using the PBR with IP SLA.While, i am applying it on interface, it says not supported....
route-map TO-CAS-E0 permit 10 match ip address 125 set ip next-hop verify-availability 10.116.199.200 10 track 100 (if i change this command to set ip next-hop 10.116.199.200, it works) ! WAN-L3-3750SW01(config-route-map)#interface GigabitEthernet1/0/11
I have one switch 3750G12S I joined the company new, I found that they want to replace it with Alcatel stack switches. I didnt configure this Cisco switch before. how to configure it. I have 4 other new cisco switches in the topology which is not created yet. the 4 switches are all 2960.
have one 3750G stack with 4 switches and this stack is presenting the follow log message:
%PLATFORM_UCAST-4-PREFIX: One or more, more specific prefixes could not be programmed into TCAM and are being covered by a less specific prefix, and the packets may be software forwarded.
In this stack we are using the layer 3 with OSPF routing, and the current sdm prefer is default:
switch-01-3750#sh sdm prefer The current template is "desktop default" template. The selected template optimizes the resources in the switch to support this level of features for 8 routed interfaces and 1024 VLANs.(code)
I'm due to replace a stack of 2 x 3750 switches very soon with 2 x 3750Gs. These 2 current switches are the VTP server for a small domain. I have put the config on the new switches switches and I made it a server and used the same VTP domain and password etc and got the VLAN info ported over.Now I did this a while back and noticed the switches are in transparent mode with a revision number of 0, I need to set this back to server and swap the switches out but the revision will be lower than the client switches (around rev 200), what do I need to do?
I am a very basic user on the Cisco Switch programming. I was given a Cisco 3750G-48 to tinker with in my home office. I was wondering if someone could lead me to some good sources of information to program and configure this switch? I am wanting to create a GB network in the house with the computers that I have and the storage arrays.
The two stacked Cisco 3750G Access switches on a particular floor in my coy just lost connectivity to the distribution Switch this morning. This meant that all Users connected to it couldnt connect to the Internet nor access local network resources.I couldn't ping the Switch IP, I couldn't also access the Switch via Console port. Each time I tried to gain access via the console port, I keep getting "Authentication Failed" message.What should I do next? How do I gain access to the Switch?
I am about rip and replace my current 3750G stack with a 3750X stack. I have trunked over vlan and vtp info and implemented a config so it should be ready to go other then moving cables onto it. However one thing I want to correct with our current setup is that the root bridge on our vlans including vlan 1 is on a separate set of switches that we control, however I would like this new stack to be the root bridge for all of our vlans. It will be the central set of switches that all other switches trunk into. I have pre-set higher spanning-tree priorities for each vlan on the new stack so I expect as I move lines into it that the tree will be re-calculated with it as the root bridge. I've ensured that there are no root guards on any of the other switches trunks and priorities are all at default levels for each vlan. Should I enforce root guard on the trunk interfaces of the new master stack? Most of the trunks are port-channels to the other switches - do I need to set root guard on the Port channel interface or on the individual ports that make up the Port channel? On both? Any other recommendations in regards to implementing spanning-tree with the new stack? I know using port channels eliminates a lot of potential for loops but not every trunk is and I'd still like to have spanning-tree on.
I am cascading one new switch 3750G (int Gi1/0/1) with an existing 3750G (int fa1/0/26) switch.. But the interface fa1/0/26 goes in err-disable state even after NO SH.. also i have diable Spanning treebpdu guard and disable spanning tree portfast. But still the issue is not resolved.
I currently have Cisco 3750G which is currently live and active and fully populated and only have remote access.
I have an additional same switch which I would like to stack. My initial plans were to have 2 GIbit etherchannels, but I came across the option to Stacks both switch with each other.
When I do a show switch on the live switch its set as a Member: [code]
I would like to add the new switch to the stack without losing the config for the switch which is live. I understand that the highest priority of the switches becomes the Master but as the live switch is Priority 1, would chancing this affect the switches config, or would it lose connection at all?
Also when I plug in the new switch and it reboot how do I ensure it becomes the slave without rebooting the live switch?The cables on the switch do they have to go to port1 on the live switch and port 1 on the new switch or can they be port 1 and port 2?
I have a 2811 router with a 9 port switch module and a four port ISDN module. The ISDN Module is our connection to the outside world. FE 0/0 and FE 0/1 are connected to separate networks and both route our the ISDN connections.We are getting a new satcom system that consists of a modem, antenna control unit (ACU), and an antenna. The ACU and the modem communicate accross Ethernet and are generally hooked to a switch. Anything computer hooked to the switch can simply use the modem IP as it's gateway and be surfing the Internet without much hassle (just need the correct DNS addresses).I'd like the networks behind FE 0/0 and FE 0/1 to be able to route out the satellite modem for their Internet connection -- when the satellite is available. Is it possible to put two switch ports in a VLAN (one for the modem and one for the ACU), give the VLAN an IP in the same subnet as the modem and ACU, and then tell the router to route traffic out the modem IP address ?
I have a Cisco 2811 router with C288nm-advsecuruityk9-mz.151-4-4.M.bin IOS version.The router has two LAN interface FE 0/0 and FE 0/1.The router have too, two interfaces ADSL ATM0.0.0 and ATM 0.0.1, both are connect to internet..I need the next configuration.The interface FE 0/0 is directly connect to a Switch A.The interface FE 0/1 is directly connect to a Access Point Cisco.The Access Point and the Switch is not connecting between.The subnet of Switch A and AP are different (Switch A 192.168.180.0/24 and AP 192.168.181.0/24)The devices in the switch A have dynamic IP address, the router must be a DHCP pool to assign theses IP.The device in the AP have dynamic IP address, the router must be a DHCP pool to assign theses IP.I created two DHCP pools in the router, one for the subnet 192.168.180.0 and other for 192.168.181.0, but the devices of FE 0/0 assign IP of 192.168.180.0 or 192.168.181. 0, but not only in the 192.168.180.0.
I'm trying to see if I can use both ethernet ports on a 2811 to run hsrp for non-stacked dual switch fail over. Then link the the NM-32A ports to L0, so the remote access server trying to use them can use the l0 ip and failover much faster (it's programming is limited). This is on IOS 12.4(25)f, though we are moving to 15 soon.
I currently have a Cisco 2621 powering a network at our co-location facility... It's a simple setup and is working well. The colo provides a redundant HSRP uplink, so I have their two uplinks going into a Dell switch. From that Dell switch I have a uplink into FastEthernet0/0 on the 2621, configured with my routing network, and then FastEthernet0/1 gets an address from my block of routable IP. FastEthernet0/1 then plugs into another Dell switch where I have all my servers connected. The servers get public routable IP addresses and use the address on FastEthernet0/1 as their default gateway.
It's time to upgrade off the 2621, so I aquired a Cisco 2811 which has two FE interfaces, as well as a modular HWIC-4ESW switch. My question is, can I get rid of the Dell Switch A in the setup above and just use the internal switch on the 2811 to accomplish the same thing? And I if I did this, would my two uplinks from the colo plug into ports 1 and 2 of that HWIC, and then port 3 would physically connect into FE 0/0? Or can I logically do that via configuration in the Cisco? I'm not sure how all this works and haven't received the new router yet, so I thought I'd get a head start and reach out to the experts.
My second question is unrelated, but each port on the HWIC switch cannot be configured as a network interface right? I'm pretty sure they can't as they aren't considered network interfaces but just thought I'd ask.
I have a laptop with a single physical NIC which I have used the advanced management tools to create two virtual NICs (say vlan 10 and vlan 20) and both are on the same subnet (say 192.168.4.x). One NIC is for normal TCP/IP traffic and one is for broadcast/multicast traffic (I have some custom software that requires this to be the case and works fine on an older laptops with built-in physical NIC and PCMCIA XIRCOM NIC). The dual NIC laptop communicates with a dual NIC server via a Cisco 2811 router (which has a 16 port switch module at the back) and has vlans set up so.
What I want is for the single NIC laptop (with two virtual NICs) to be able to also communicate with the server. Basically, one NIC is for normal traffic and one is for multicast/broadcast traffic. All three machines need to be able to talk to each other using the NIC for normal traffic and both laptops must be able to receive broadcasts from the server. What is the best way to configure the router to handle the trunking/tagging? Most configuration documentation I read has two complete subnets for the two virtual NICs. Note that all three machines use static IPs and are part of a workgroup so no DNS and domain servers etc.