Cisco Switching/Routing :: 827 - Switch L3 And DSL Router Configuration
May 21, 2013
i have floor with 10 users with DATA vlan and VOICE vlan , WIRELESS vlan , my questions :
Basement floor Core switch fiber -----> my floor switch <--------my internet DSL router827
- In this scenraio the switch in my floor will be as L2 or L3 ?
- What is the configuration it will be in the switch if it is L3 ?
- What is the configuration it will be in DSL router with Subinterfaces for each vlan ?
Any sample for configuration that can work for switch nad DSL router ?
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Jul 5, 2012
I've recently purchased a Cisco catalyst 2960S-24TS-L & setup 3 V LANS 10 (no current IP),20 (192.168.2.1) and 30 (192.168.3.1) to reflect the router V LAN configuration & ip information. When connecting my PC to the switch to test connectivity on (2.1 & 3.1) I'm unable to connect to the the net but can successfully ping GW (int FE0.20 & FE0.30) 192.168.2.1 & 3.1.
The router is an Cisco 1801 & it seems this is where the configuration issue is but I'm unable to figure out how to complete the setup. It has been quite awhile since I've configured a Cisco router.
Ive never had this router connected to a switch so all router switch ports are in the default VLAN1 (192.168.1.2), with FE0 disabled. In trying to get the switch to communicate with the router I made the following router config modifications.
FE0 enabled with subinterfaces configured
FE0.10-currently no ip
FE0.20-192.168.2.1/27
FE0.30-192.168.3.1/27
I have two issues I want to resolve:
1) I do not know what additional steps are required to allow 2.1.& 3.1 V LANs to access the net.
2) I want to disable VLAN1 if possible & use the network IP for VLAN10 (192.168.1.0). I'm unsure how to do this as any change on VLAN1 immediately breaks router access and the router reconfiguration becomes more complicated with changes to the FW ACL etc.
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Nov 20, 2009
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Jan 2, 2013
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Feb 6, 2012
I am trying to set up a simple configuration on a Cisco 4928-10G switch running
cat4500-entservicesk9-mz.122-37.SG.bin
All I want to do is to mark all trafic on vlan 3 let's say for this example with dscp af31.
All outgoing trafic to be marked with DSCP AF31.
In pratice If I have 2 laptops connected to access ports on vlan 3. When one laptop pings the other I want to see on the receiving end when I run wireshark the traffic to come marked with DSCP AF31.
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Mar 18, 2013
I have a 3560 switch with 1 VLAN (VLAN 10) where I need to make ports:
1-10 as isolated (can't contact each other)
11-20 as community (need to contact each other like a normal VLAN)
23 as promiscuous (server that ports 1-20 need to get to)
24 as promiscuous (WAN router where ports 1-20 need to get to and the remote servers).
[Code]...
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Jun 24, 2012
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!
hostname ciscoasa
enable password xxxxxxxxxxx encrypted
passwd xxxxxxxxx encrypted
names
[code]....
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Mar 7, 2013
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Aug 27, 2012
I am going to change a running 6500 switch. I am missing a best pratice doc for changing a cisco switch configuration. My question is if a startup-config has an error (due to typo mistake, or due to comands not supported on latest IOS) and I do copy tftp startup-config then what will happen ? I want to make sure when I do "reload" the switch then it should boot normally with the latest startup config !
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Feb 26, 2013
I'm in the process of upgrading my 4507R core to a new 4507R-E. The old switch has Sup IV engines (WS-X4515) running IOS 12.2(40)SG and the new switch has Sup 6L-E engines running 15.1(2)SG. I'm trying to "move" my configuration from the old switch to the new. Below shows the commands configured in the old switch. I'm trying to determine how to implement the same configuration on the new switch since these commands are no longer available.
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Mar 7, 2012
recently we purchased cisco smart care, and today i recived this notification: Configuration RegisterCriticalNot fixed on switch it is set to: Configuration register is 0x2101
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May 5, 2013
I have a 2960 that bounced several times over the weekend and then appears to have lost its configuration. Using CDP from the backbone switch pulls up the information below. Is there any way for me to configure the downed switch from another switch on the network? I am trying to avoid having someone from the site try to find a console cable and a suitable computer with a serial port. [code]
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Jan 28, 2013
when enabling multicasting on layer 3 interfaces the CPU becomes fully utilized , is there any specific configuration should be enabled to reduce this .
Config :
Inetface vlan 100
ip pim sparse-dense
ip igmp version 3
[Code]......
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Oct 21, 2011
I did the DHCP configuration for my CISCO 2960 switch but the clients are still not able to get the IPs.see the configuration below.
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(config)#pool test
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(config-if)#ip dhcp snooping trust
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Apr 17, 2012
I am uploading new configurations to my Cisco 3750 stacked switch and noticed that after the load I cannot log back into the switch because my password somehow was changed. After performing password recovery and getting back into the swtch, I noticed the configuration register was 0xF. I have never seen this before. The config-register command does not seem to be supported to change it back to factory default. The switch is on a ship which has several power hits when they switch power from shore to ship power.Can this cause the configuration register to change? What is the best way to change the configuration register?
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Dec 20, 2012
I have stack of 2 switches 3750?I config etherchannel between them.
here is result
2 Po2(SD) LACP Fa1/0/15(I) Fa2/0/15(I)
Both ports are up up but standalone Int port channel 2 is down down.Need to know if this is default behaviour when we config etherchannel between stack switches?
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May 12, 2013
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.
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Jan 2, 2013
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"FastEthernet1 is down, line protocol is down Hardware is Fast Ethernet for out of band management, address i"
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Mar 6, 2013
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Jun 4, 2012
switch catalyst 4500 with ios cat4500e-universal.SPA.03.02.00.XO.150-2.XO.bin. I need to configure modules 3 and 4 of supervision, the problem is that I need the 4-port module 3 are active but only the first turn on both the module 3 and the first port on the module 4. [code]
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Dec 13, 2011
boot system switch all flash:c3750-ipservicesk9-mz.122-55.SE1/c3750-ipservicesk9-mz.122-55.SE1.bin;flash:c3750-ipservices-mz.122-25.SEE2/c3750-ipservices-mz.122-25.SEE2.bin We have two stack of 3750 switches. When I enter above command getting below mentioned error, two images are showing switch 1, but one image only showing in switch 2, i.e 1st image in show boot command.
%Command to set boot system switch all flash:c3750-ipservicesk9-mz.122-55.SE1/c3750-ipservicesk9-mz.122-55.SE1.bin;flash:c3750-ipservices-mz.122-25.SEE2/c3750-ipservices-mz.122-25.SEE2.bin on switch=2 failed
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Dec 12, 2012
We have a 24 port and 48 port 3560 E switches with identical IOS the 48 port switch supports private vlan while 24 port switch doesnt
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IOS version : C3560E Software (C3560E-UNIVERSALK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1)
flash:/c3560e-universalk9-mz.122-55.SE3/c3560e-universalk9-mz.122-55.SE3.bin
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Mar 17, 2013
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May 29, 2013
Since Avaya phones do not run CDP, how does the phone know which DHCP pool to pull from to get its IP address if the PC is connected to the phone.
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interface gigabitethernet1/0/1
cisco3750(config-if)#switchport mode trunk
cisco3750(config-if)#switchport access vlan 126
[code]....
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Mar 5, 2013
I am trying to configure a 3500XL switch (and I know its old). I get to the int fa 0/1 line and thats where it all stops working.
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switch#copy run start
or
switch#(config-if)#switch port mode access
switch#sh run int fa 0/1
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May 26, 2013
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Apr 12, 2012
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mls qos
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Feb 20, 2013
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2 X WS-C2960S-24TS-S
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Jun 13, 2012
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interface Port-channel1
switchport
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[code]....
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May 8, 2012
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