Connecting Layer 2 Switch To 3
Mar 10, 2011Here is a second paragraph from official BCMSN book page 93:
View 6 RepliesHere is a second paragraph from official BCMSN book page 93:
View 6 RepliesI'm thinking of connecting a branch office to the main office with just using multilayer switch. The sites will be connected using ethernet leased line, so I'm thinking of connecting it directly to the switch.
We're running eigrp on our network so the Multilayer switch will do the eigrp routing.Thinking of using C3750E-24TD-E (IP Services) as the multilayer switch. Can this work or do I still need a router to terminate the WAN?
I have :
- two different subnets (S1, S2)
- these subnets are connected to an IP backbone via wirelles acces points
I would like to physically connect these subnets together so the networks devices in S1 could directly communicate with the devices in S2 and vice versa without going through the backbone.
The obvious solution seems to interconnect these subnets with a router or a switch L3. But I would like to connect these subnets and stay at layer 2.
So, is it possible to connect S1 and S2 with a switch L2 ? If I do that, what is going to happen? Can I create just one subnet S3 from this two subnets when I connect them together and have my two separate subnets back as soon as I disconnect them?
Connecting ASA 5520 to two Catalyst 3560G layer 3 switches. What's the best practice to connect the asa-5520 at the edge, to the core of my network? What I'm looking to do is connect two routed gigabit ports (gi0/2 and gi03) to two seperate layer 3 routed ports on catalyst 3560G. I'm wondering how to do it, or if there's any type of failover method? I'm running EIGRP in the network and the link to the first core switch has a /30 point to point connection. Everything works fine, I'm just not sure how to connect the second switch to the firewall. Should I use the a different /30 for the point to point connection to csw02 gi0/48? (See attachment) How would this affect traffic flowing through this interface? Would I have to duplicate rules I have on my inside (gi0/2) interface? Is there a way to make the inside2 interface standby some how? I want to know the best way to set this up, so in the event csw01 goes down I don't loose internet. Will EIGRP work it's magic and only use 1 path to the ASA? Should I even be using routed interfaces on the ASA and just use trunked mode?Running ASA 8.4?
View 1 Replies View RelatedI need a ≥ 8 port layer 3 managed switch. What would be the cheapest solution for this?I've been looking at some stuff like Cisco 4908G, but that only supports 1000base-X. I need something that supports the standard 1000base-T. I've also looked at a Cisco WS-C3508G-XL-EN, but correct me if I'm wrong, this is only layer 2?
View 11 Replies View Relatedcan i use normal two L3 Switch(3560) for BGP Multihoming with 2 different isp
View 4 Replies View RelatedI'm looking to get a layer 3 managed switch. The HP we currently have only does layer 2.I'm looking at a HP v1910-24g. It has 24 10/100/1000 ports and looks to be layer 3 as well.It looks like they can be had for around $350.Anything different I should be looking at with similar specs? Any issues with the v1910-24g?
View 19 Replies View RelatedI'm fairly new to networking but I've learned quite a bit on my own without being educated. I'm trying to just figure things out on my gear. So for my LAN party i'm going to need an internet connection. I'm not going to rely on my venues subnet though so i want to create a new /24 subnet(250 hosts is good for a start). I want my subnet to be able to speak to the outside network too.
View 8 Replies View RelatedI am migrating an a group of workstations that run a fire system from one software to another. The current workstations run the following info:123.123.123.xxx 255.255.255.0The new workstations run:100.100.100.xxx 255.255.255.0There is a central switch location using a GE-DSG-244 Layer 2+ Managed switch. There are two remote location using GE-DS-82 Managed Switches.The two networks must remain isolated, yet use the same fiber communications. The central switch connects to the two location using MM Fiber. From my research I believe I need to use the 802.1q standard to allow port trunking between the two switches.
View 7 Replies View RelatedI got one SF 300-48 layer 3 switch I tried to configure to use it in the office network.Unfortunately I'm unable to configure the VLAN settings.I need port one for input(VLAN2),port 7-15 for another vlan(vlan3) also need to connect with the vlan 4.port 15 is another vlan(vlan4) this is for wireless.Other ports are static.It doesn't get any connections with other vlans.I wish to know how to configure vlans in GUI mode.I tried , But I can't get the Vlan setting correctly.Also,I need to know how to communicate both vlans in GUI mode.
View 8 Replies View RelatedI have 1 internet router 2960 and 2 No's ASA firewalls,The issue is Suppose if ASA-1 fails the failover will happen on ASA-2 but The issue is i dont have a layer 2 Switch in between the ASA's and Internet router, i have to manually shift the cable from ASA-1 to ASA-2,what sort of configuration i can do on 2960 router interfaces to support failover from ASA-1 to ASA-2, I have enough interface on 2960 router to occupy ASA-2. These all 3 devices should be in 1 Subnet.
View 11 Replies View RelatedI created a lab and I have a few issues. One with a layer 3 switch and another with a ASA 5550.
1. Layer 3 switch: I have created multiple Vlans and I am able to route between them. I can ping the switch IP but not the default gateway to the ASA. I did a tracert of the default gateway of the ASA and once I am past the Vlan gateway it fails.
2. On the ASA 5550 I created the Vlans on sub-interfaces but still cannot get to the internet. ASA config is below the switch config.
I'm looking at implementing a cisco 3550 Layer 3 switch and would like to know if i can forward ports down to all of my different Subnet Servers/Pc's.
For example. See attached image.10.0.3.5 is a mail server. 4.2.2.2 is our public IP.
I would like to forward TCP port 25 down to our Mail servers IP. Any reason this will not work by using the cisco 3550? Currently we have a flat network (1 subnet) and port forwarding works fine.
I am tryingto add a new VLAN on my C3560E Layer 3 switch for administration purpose.My goal is to make this VLAN for administration only and to let the administrators from 172.17.1.1 connect to any host of the internal network 172.16.0.0 plus exit to the internet via the default gateway 172.16.1.245.
Here an extract of what done so far:
ip routing
spanning-tree mode pvst
spanning-tree extend system-id
vlan internal allocation policy ascending
!
interface GigabitEthernet0/1
[Code]...
What happened is that:
1. The host connected to Vlan30 can correctly ping the interface it is connected to.
2, The internal network can access the internet
3. The host connected to VLAN30 cannot access the internet and cannot connect to any internal server.
Do I have to add a static route? This is a production envuironment and it is my first experiment with a layer3 switching in production, so I cannot mistake
I would like to ask if it is possibe to stack a 3Com 3cr17161-91 to a layer 3 Cisco Switch? The two will be stacked using the avaialble SFP modules.
View 4 Replies View RelatedI can understand it 's one of those very basic questions , but how do I identify a Switch is Layer 2 or Layer 3 ?Looking through # show version command and checking the IOS version to be IP BASE or LAN BASE . Is it the right way ?Cisco 2960 is a Layer 2 or a Layer 3 Switch ? I noticed that access-lists could be configured which means that it 's a Layer 3 Switch , right?
[code]....
I've created a scenario using a 3750 cisco as core switch ad other 6 switch model 2900 in access level.my problem is this, the router is not a cisco router, and this router is not able to make NAT on more than one subnet.Into the core switch I've created 4 VLAN and I must to give internet access to 3 of them, 192.168.0.0/24 (vlan1), 172.16.0.0/24 (vlan2), 172.17.0.0/24 (vlan3).I've connected the switch to router via gigabit ethernet 0/1 and I've assigned to this interface ip address 192.168.10.2, the router ip address is 192.168.10.1, Switch ip default-gateway is router ip address 192.168.10.1, ip default route is 0.0.0.0 0.0.0.0 192.168.10.1 I've enabled ip routing feature and I've set no switchport feature to interface gigabit ethernet 0/1.From core switch I can ping router ip address but I can't make it from all other user, and the users not able to have internet access.
Below the switch configuration (only necessary strings)
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
[code].....
My understanding is that even layer 2 switches like the Cisco 3500XL can have 1 IP address for management. However, I cannot seem to figure out how to configure it to get it working in a router on a stick setup. I can manage the router through SSH, but I cannot SSH to the switch.
View 3 Replies View RelatedI have made a topology by using one 3560 switch and 2 2950 switches. I have also made 2 vlans name Clients and other Servers and vlan 1 is for anagement purposes. The left 2950 switch is for clients and the right is for servers. Clients is vlan 2 and servers is vlan3 . Now what i want is that my dhcp is should assign ips to clients in vlans 2 provided that servers are in vlan 3. I am also using a border router and i have introduced a default route on the 3560 to the border router.
Now when i assign static ips to my clients pc and server dhcp then i can ping between vlans but when i try to assign ip through dhcp then it wont work. Also the default route on the switch to the border router doesnt seem to work. I can ping only the border router when i put a default route on the border router instead of the 3560 switch.
is it possible to run a Catalyst 4500 as pure Layer 2 Switch, i.e. disabling "ip routing", but still managing the switch via Fa1, i.e. the defautl mgmtVrf vrf ?I tried the following:
!
no ip routing
!
interface FastEthernet1
ip vrf forwarding mgmtVrf
ip address 192.168.1.1 255.255.255.0
!
ip route vrf mgmtVrf 0.0.0.0 0.0.0.0 192.168.1.254
ip default-gateway 192.168.1.254
I was not able to reach the Switch even from the same subnet. Only after enabling ip routing I could manage the Switch. I haven't found any command to set ip default-gateway for a vrf. Any workaround to keep routing disabled, but still manageable via VRF?
Is it possible to establish a interface dialer on a layar 3 switch?Or is it only interface for routers?I have a c3750 switch (WS-C3750G-24T), and when i try to establish a dialer interface i get an error message:
[code]...
I have been working on redesign of our network which was very challenging but almost there.We have a limited budget of around £20k(32k Dollor) Max. The cabling has been done before my time and it is very messy and cheap so you can not do a proper cisco hierarchical model at all.I can not have multiple links from each access layer switch to the core/distribution and as a result i had to connect some access switches together to introduces redundancy in a nutshell,we have two buildings, main building which has the server room in it and the other building which is just bunch of office. i have introduced a partial mesh on the normal building and have tried to introduce full mesh on the main building .
View 9 Replies View RelatedI'm setting up a Cisco 3750 layer 3 switch with several vlans. I thought enabling routing would route between the vlans, but no such luck.What I want is to share the internet access of vlan 100 with the other vlans/ip-nets.How can I do that?
View 2 Replies View RelatedConfiguring OSPF on a catalyst 3560G Switch to connect to our building next door by way of fiber. The other two switches in the other building are running OSPF, I am trying to connect to the other building and access a server which is on a switch running OSPF. I am trying to configure the switch here to run OSPF and be able to see the neighbor, but currently can't although I've identified the networks. Maybe I'm missing something, I've followed the instructions but something is not right.
View 15 Replies View RelatedRACK 1 is the old rack and NEW RACK is the rack which is going to be procurred for some new Servers. All the Servers in the RACK 1 has a default gateway as PIX Inside IP. As of now the 3560 Switches acts as Layer 2 and does not have L3 IP routing enabled. How can I enable conenctivity between 192.168.36.0 range and 192.168.57.0 range wihtout making any change to current PIX inside IP address 192.168.57.1?Is it possible that I can enable IP routing on the 3560 Switches , create interface VLAN 36 and since already Switch 2 has it 's default gateway as 192.168.57.1 , Would the traffic from 192.168.36.0 be routed to 192.168.57.1 ? Or do I need to create static route for that ?Since L3 Routing is not enabled and since the 3560 Switches are just acting as L2 , the VLAN 2 - 192.168.57.0 range does not have any interface VLAN configured. When it is changed I would need to create interface VLAN 2 on 3560 Switches?
View 18 Replies View RelatedI just received a Catalyst 2960-C (WS-C2960C-8TC-L R) switch and I am unable to sign into its web GUI in order to configure it. I've tried both the Cisco Network Assistant and Internet Explorer and I am unable to log in either way. The documentation provided by Cisco states that the default password is simply cisco and that a username is unnecessary. Needless to say, it doesn't work. I've also Googled for other default passwords (such as cisco-cisco as the username-password), none of which worked either. I've also tried resetting the switch back to its factory default a few times.
View 8 Replies View RelatedI cant find the v LAN-membership command on my 3700 layer 3 switch, I've searched Google on whether the command has upgraded to a new syntax to no avail, I'm using GNS3 and the IOS is c3725-adventerprisek9-mz.124-25d.bin
View 4 Replies View RelatedI'm building the below network configuration:
WAN -------- ASA5505 ------<802.1q trunk>----- L3 switch -----<802.1q trunk>----- L2 switch w/ VLAN support
The following VLANs exist on the ASA and both switches: VLAN 10 (10.10.10.0/24), VLAN 11 (10.10.11.0/24), and VLAN 99 (10.10.99.0/24).
The ASA5505 performs the following functions: routing to/from the WAN, firewall, NAT, and DHCP for each VLAN. It has an interface on each VLAN (10.10.x.2) for a DHCP server.
The L3 switch provides inter-VLAN routing and layer 2 switching. The L2 switch provides layer 2 switching, with VLAN support.
What should the default gateway on the L3 switch be? Should I set the IP of the physical interface connected the L3 switch to the ASA5505.
We have implemented WLAN using Cisco WLAN controller (5508) and AP (AIR-CAP3502E-E-K9), i am trying to connect AP (which have gigabit port) with Layer 3 switch using UTP Cat-6 Cable having 24 AWG Wire Gauge.
What maximum length i can achieve by using above mentioned cable?
i need to know that how can i make vlans in Linksys SRW224G4 Layer 2 manageable switch , because i have 100 users network having lots of users using more then 1 ip to connect 4 different servers having different ip class pools, what i need is, i want to use only single ip pool with Class B Address like 172.16.6.0 for all network users which all connect to far end servers through layer 2 Linksys SRW224G4 manageable switch controlling to allow different IP pools ? like 172.16.1.0 / 172.16.55.0 / 172.16.99.0 and 192.168.1.0
View 1 Replies View RelatedI would like to know if ip helper-address feature is working on a layer 2 switch (2950,2960) or you should use a Layer 3 switch to do that?
View 7 Replies View RelatedI am trying to setup my 3550 layer 3 switch to do hand out dhcp addresses for different vlans. It is connected to my router address 192.168.1.1. I setup a new vlan 3 and the dhcp pool.. The client gets a 192.168.3.2 address but am not able to ping the router and other clients and get out to the internet.
Here is the config that I have. I deleted the other ports because I am not using them. The vlan 3 client is on port fast Ethernet 0/17 and the router is connected to the fastethernet 0/1.
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
[code]....
Configured Layer 3 portchannel from 6500VSS enabled switch to two different 6500 standalone switch. Configured first ip on VSS switch, second ip on standalone switch1 and third IP on standalone switch2. My question is
1. Will the portchannel be up?
2. If port channel is up, will I able to ping the connected IP's.