3750 can not support multiple subnets in it's DHCP server pool config.
Is this an issue that can be fixed with a different iOS or is there a different Cisco switch that I can replace the 3750 with that will handle multiple subnets within an individual pool?
I would like to configure a 3750 switch port to be able to use two vlans. I know you can do this with a voice and data vlan, but what about two data vlans ? Say I have two devices, one on a 10 subnet and the other on a 172 subnet, but i only have one wall jack for both devices to plug into. So I use a mini switch to connect both devices and connect the switch to the wall jack; and of course this all leads back to one switch port. When I go to enter the switchport access vlan 172 cmd, how would I also make it so the device on the 10 subnet could route out ?
View 9 Replies View RelatedMy question is if I can configure 3 ssid, for 3 different VLAN and add the DHCP address from a WAP4410N AP, when you upgrade to the latest version of IOS I can have this functionality?
View 2 Replies View RelatedI want to configure multiple DHCP configuration on ASA 5505. I tried to create sub interface for different IP Pool but it was not configure on ASA 5505. is it possible to create subinterface on ASA 5505?
ASA 5505 IOS version: 8.3(1)
License: Security Plus
Can you confirm that if I want to disable temporarily a dhcp pool on a 4500, I need just to shutdown the interface VLAN corresponding to a specific dhcp pool?
ip dhcp pool test
network 10.X.27.0 255.255.255.0
default-router 10.15.27.250
[Code].....
I've got a Catalyst 3560G, and I want to reset the current index for a DHCP pool. I could remove the leases given for that pool, but I couldn't find this option.
View 3 Replies View RelatedCan a layer 2 cisco 2950 switch be used as a dhcp server with it's own address pool.
View 3 Replies View RelatedI am configuring DHCP pool for voice vlan on cisco 2921 router.
Here is the setup.
2921 router -> 3750 -> 2960 PoE -> 7942 IP Phone
Router Config
ip dhcp excluded-address 10.146.54.1 10.146.89.50
!
ip dhcp pool VoiceVlan
network 10.146.54.0 255.255.255.0
subnet prefix-length 24
dns-server 10.144.68.32 10.144.68.33
option 150 ip 10.146.68.36
default-router 10.146.54.1
netbios-name-server 10.144.68.32 10.144.68.33
netbios-node-type h-node
[code]....
I have a Cisco 2901 with the 4port gigabit ethernet switch module that I'm trying to get configured to have a seperate subnet for each port. So far I have it set up so each subnet is a vlan, then on each port I use the switchport access vlan command to tell it which subnet I want that port to be on. However, there is one port that I need to have 2 subnets on. The way I found to do that was to use switchport trunking on that port, but it doesn't seem to be working properly. how they would configure this? Right now I have vlan 101 as x.x.x.17/28 and vlan 103 as x.x.x.53/30. I think where I'm getting hung up is the proper association between the physical port and the vlan subnets.
View 5 Replies View RelatedWe have a 6509 that was connected to 2 other locations(location A and B) and our local lan (location MAIN). We wanted to move the location A and B to a 3750 switch and only allow the traffic that needed to access our location MAIN to come through the firewall. The only problem I ran into is that before location A and B were on different interfaces so in the 6509 firewall the routes for traffic to our MAIN location was done by static routes.
I.E.
static (MAIN_intf,A_intf) 192.1.1.72 10.94.10.72 netmask 255.255.255.255 0 0
static (MAIN_intf,B_intf) 192.2.2.72 10.94.10.72 netmask 255.255.255.255 0 0
[Code]....
because it has a static overlap, which makes sense to me, but my question is how do I configure the network to get this to work? Do I have to reconfigure my network and access-list? Do I need to add more ports between the 6509 and 3750? I'm not sure if this is the best way to do what we want. If something is not clear I'll try my best to explain the setup, but I just took over for our I.T. guy when he left.
I put 10.10.10.72 instead I should have put 10.94.10.72. the routed port is on a different subnet than the computer I'm trying to access.
We have RV 042 deployed for internet access/firewall purposes. Due to growing number for Wireless devices and also to separate WLAN traffic from wired devices, we have created a separate VLAN/IP Subnet for the wifi devices. We are having trouble accessing the internet from the WiFi VLAN/IP Subnet. Cisco 3750 is layer 2 and layer 3 device. We have VLAN 1 (10.10.10.0/255.255.255.0), all wired devices and RV 042 are part of VLAN 1. Connectivity to internet from VLAN 1 is good. VLAN 2 (192.168.1.0 / 255.255.255.0) was created for wifi devices, 3750 does the inter-vlan routing, I have enabled the multiple subnet feature on the RV 042 and added 192.168.1.2 / 24 to the subnet list, we still have issues accessing internet from vlan 2 devices.
As a workaround, I shutdown vlan 2 and added 192.168.1.0/24 as secondary address to the VLAN 1 interface on 3750 and i was able to access internet from 192.168.1.0/24 network with wifi devices also on vlan 1, we want wifi devices to be on separate vlan / ip subnet. Looking at the documentation for RV series routers, it talks about supporting multiple subnets access to internet by enabling multiple subnet feature but it doesn't seem to work.Are there restrictions on having multiple vlans?
Is it possible to have multiple dhcp pools for multiple VLANs? The switch is a 6509 and/or 4506 catalyst. I don't want to use server-based products.
View 5 Replies View RelatedI have multiple campuses and a Central Admin...I've created Groups for all, except I need a few devices within Central to be available to the Campus Admins... (ie..a Cisco WCS System) How do I allow a device to be put into multiple NDG groups?
View 1 Replies View RelatedI have a customer with three rooms where teh access layer aggregation switches are run back to.
Access Switch Stack A -> room 1 + room 2
Access Switch Stack B -> room 2 + room 3
Is it possible to have three Nexus 7000s ie one in each room (1,2 and 3) and have them setup like this:
Nexus 7000#1 vPC domain 1
Nexus 7000#2 vPC domain 1 + vPC domain 2
Nexus 7000#3 vPC domain 2
Thus gving all access switch stacks redundant links to the core withouit spanning tree.
I know its not ideal but its a campus site and thats how the existing fibre runs go.
I would like to know if it is possible to assign a 3rd IP address to my end user vlan. Basically the 45xx acts as my end user gateway and has been confirgured as below
interface VlanXX
description Main Vlan
ip address 2.X.X.X 255.255.255.0 secondary
ip address 1.X.X.X 255.255.252.0
[Code].....
Here, due to IP address exhaustion in my end-user network, i want to add one more subnet X.X.X.X/22 to my network and assign one IP more from this range to the above vlan to act as the gateway IP.
Could I configure and connect 3 Dell switches to an ASA-5525 Firewall which has got 8 interfaces.
View 7 Replies View RelatedI'm looking for switches that support single mode fiber connections and would like to know if "WS-C3750-FS-S Catalyst 3750 24 100BaseFX + 2 SFP" and "WS-C3750G-12S-S Catalyst 3750 12 SFP" can serve the purpose?
View 6 Replies View RelatedI am troubleshooting a fiber connectivity issue.Now I have two switches, one is 3750, and another is small biz 300 series switch. Both switch has a single mode smf gbic. Now I have two swtiches face to face and connect with a single mode cable. Do you think if I would get a link light on? Both ports are no shutdown.
View 3 Replies View RelatedDoes Nexus 7K support Multiple VDCs sharing ports on a single line card. One of our cisco parnter engineers stated that cisco doenst recommend using same line card for multiple VDCs.The second VDC (Non-Default VDC) will be used four our Outside, and DMZ Segment, and to phyiscally segregate our Firewall from our Internal/Inside Core Switch without using a physical DMZ Switch.I know Cisco used the Nexus in this way in their PCI DSS 2.0 Compliance Document. Module is N7K-M148GT-11L
Mod Ports Module-Type Model Status
--- ----- -------------------------------- ------------------ ------------
1 48 10/100/1000 Mbps Ethernet XL Mod N7K-M148GT-11L
Mod Ports Module-Type Model Status
--- ----- -------------------------------- ------------------ ------------
1 48 10/100/1000 Mbps Ethernet XL Mod N7K-M148GT-11L
I just found out that one of our 10 3750's has been assigned with an IP Address that is in conflict with a PC that has been in production long before this 3750 was deployed in our environment. Good thing it is servicing devices on a separate vlan. The conflict IP Address is assigned to the default vlan of the switch so we can connect to it from the core.If I change the IP Address of the switch, will it reboot and momentarily disconnect the devices connected to it?
View 14 Replies View RelatedI have a network with a Catalyst 3750 as the main switch and then some Catalyst 2960 switches that are plugged in to that. I have a server running windows server 2008 with a couple of virtual machines running in Hyper-V. I created 4 VLANS listed below and gave the 3750 the following IP Address.I would like the 3750 to only be configurable from VLAN 40 but currently every VLAN can connect to it, I noticed in the standard web page settings there was a setting for "Management VLAN" but it was set to 1 and would not let me change it, I kinda assumed that was for the management port in the back.-Now the tricky part, I was trying to set up routing between the VLANs and so far I have only been able to get a sort of "all or nothing" routing to work. I can turn IP routing on and add two or more VLANs to the routing and it works fine. But what I was hoping to do is create a couple of "junction vlans" that would only route to one or two other vlans. For instance, I wanted to create a VLAN 100 that routed to VLAN 20 and 30 but nothing else. I also want to route VLAN 1 just to VLAN 30, and so on. I am able to do each one of the cases but only one, it seems like the switch only supports one "routing table" am I missing something or is this just a limitation of the switch?
View 2 Replies View RelatedIm looking for some clarification regarding running a Cisco ASA in transparent mode with multiple contexts. To give you an insight into the network design we have the following -
Collapsed Core/Aggregation Layer running Cisco 3750s. The 2 Cisco 3750s are using SVIs with HSRP for default gateways per customer with a total of 8 customers. Each customer is segregated into seperate VLANs with Cisco 2960 switches used in the Access layer. Each customer has 2 Cisco 2960 switches with redundant uplinks to the Core/Aggregation layer. Customers are spanning tree loadbalanced between core/aggregation switches.
What i need to now do is add two transparent firewalls into the mix in either an active/active or active/standby setup. I need the firewalls to support all 8 customers, therefore I am guessing they need to run in multiple context mode. Having read into this it has left me somewhat confused as to how to integrate them into the above setup as a bump in the wire so to speak.
I can not get dhcp to work.I can ping from the switch to both vlans...
here is my config for the router.....
Router is a 1760
Current configuration : 1379 bytes
!
version 12.4
service timestamps debug datetime msec
[Code]....
We are configuring ACLs for a dhcp pool on Sw3750
ip access-list extended Test
permit ip any 192.168.1.0 0.0.0.31
permit ip any host 172.16.1.1
And, here is dhcp pool:
ip dhcp excluded 192.168.1.1 192.168.1.3
ip dhcp pool Name
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
But when a PC try to obtain IP automatically, it doesn't work.
i created the 10 V LAN in my Cisco 3750 switch.All other V LAN DHCP IP's (192.168.2.X - 192.168.10.X) will be release from the DHCP server except VLAN1 . In my 3750 switch i created DHCP pool(192.168.14.X).... and i assigned to VLAN10.... but one of the client is assigned to V LAN 2(192.168.2.X) configuration. but its getting IP from the Cisco DHCP instead of DHCP server.
View 2 Replies View RelatedI have a Cisco SG200 26 Port Switch, 2 Cisco WAP4410N Access points, and a VLAN aware Router. I have created 4 VLAN's. For the sake of this conversation lets call them.
98 - Intel Vpro
99 - Management
100 - General
101 - Guest
The Access points are capable of doing V LAN tagging so I plan on having them tag a guest network as V LAN 101. That can get sent to the V LAN aware router and out. No problem. I have some devices, or management pages that I don't want accessible from the general network. (Intel V pro KVM, Remote Management Cards, AP Config Menus, Switch config menu...) . I need to be able to take a V LAN unaware device, plug it into port 1, and have it communicate with V LAN 98, 99 and 100.
I'm looking to configure a syslog server for all of my cisco device logging. I've had a look at CNA and can't find any options to define a syslog server for my switches.
What's the best way to define a syslog server and the severity of the notifications? Also, i'm looking to clear all previous Syste mmessages fon my devices?
I have customer who has as Core Switch one Cisco Catalyst 3750 with the IOS c3750-ipbase-mz.122-35.SE5.I know that this image support DHCP Server configuration, but I like to implementate new vlans (approx 15) and I want to know if this switch support 15 DHCP Servers.
View 3 Replies View RelatedI want to clear following things regarding Cisco 3750 switch.
1. Can I configure Multiple DHCP pool on C3750?
2. Performance effect due to same?
3. Can I resrve IP addrese from DHCP pool for specific MAC address.
4. Can I Exempt IP address from DHCP pool ?
Had a problem with a 3750 this morning not handing out DHCP addresses. The following is a sanitized config of what the switch is using. [code] The IOS installed on the switch is c3750-ipbasek9-mz.122-55.SE1.bin. What got my attention was that the sh ip dhcp pool PC showed 180 addresses being excluded. In doing the math from the dhcp excluded addresses, only 64 should be excluded.
My next step was to remove the second dhcp excluded-address line above. Doing a clear ip dhcp binding * started letting the DHCP service hand out addresses but the sh ip dhcp pool PC stil showed 180 addresses excluded.
It finally took removing the dhcp pool and putting it back in to drop the number of excluded addresses down to a value that matches the first excluded-address line. Didnt see a dhcp bug in the bug database that would explain this.
I tried re-entering the second excluded-address line from above and saw the number of excluded addresses rise as expected. When I negated the line, the number of excluded addresses dropped back to its previous value.
I want to monitor our backup server (commvault) as it is saying it's library (Data Domain) is going off line.[code] The issue is I am seeing a lot of unicast traffic (on Wireshark) that has nothing to do with the server on E2/11. Some of it is from different VLANs... There is way too much data (multi-Mbps) to keep wireshark running very long to capture our intermitten problem.
View 3 Replies View RelatedI have a problem with DHCP. I have two 2960 connected with a port channel on ports 47 and 48 as trunk with native vlan 10. I only have this one vlan. In port 1 of sw 1, I have a C800 as DHCP server.
I have an AP autonomous with single ssid on vlan 10. When I connect the AP to sw1, I receive dhcp with no problems.When I connect the AP to sw 2, I’m not getting IP by DHCP.I have DHCP snooping working on vlan 10 on both devices.
The ports where I connect the AP are access ports on vlan 10 config as trusted.The trunk ports are also configured as trusted.The port 1 of ws 1 that goes to the C800 is also configured as trusted.
figure out why I’m not getting IP by DHCP when I connect the AP to the SW 2.The only I notice is that when I connect the AP to sw 2, I get on SW 1 the message of packet drop by option 82, but even after configuring ip dhcp snooping information option allow-untrusted on both switches, the problem persists.
I have a c3560 that on Port 1 I can not get any device to talk to the DHCP server.Previously there was a client connected to this port however over the weekend he stated he lost connectivity.
In my troubleshooting I have connected that client to another port and now he is good to go...I connected my laptop and tried to connect to the network however I could not.I checked the logs and did not see anything that lead me to think it was having problems.
Is there another way to shut this down and hopefully start it back up without having to restart the entire switch?