Cisco Switching/Routing :: Configuration To Build VPC Between 5ks And 7ks?
May 2, 2012
Any configuration example to build a vpc b/w 5ks and 7ks? i have total 4 links between them . If not, I am assuming to have the following config for the port-channels:- (Provided the vpc domain is configured).
N5k1 and 2:
int eth1/10-11
channel-group 10 mode active
switchport mode trunk
int po10
switchport mode trunk
switchport trunk allowed vlan a-d
[code]....
So, its basically vpc 10 that has 4 physical links b/w the vpc domain of 7ks and vpc domain of 5ks.
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Feb 19, 2012
I have to use 9 Cisco 300 series switches to build a new network. I will use one of them (core switch) in L3 for routing between Vlans (3 Vlans) and the others in L2. Is there a software to centralized all switches configuration, operation and monitoring?
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May 1, 2012
I plan to build improved redundancy in to my LAN by stacking two 3750s and teaming pairs of NICs on my Dell PowerEdge servers, with each cable of the pair going to a different switch.In my mind this provides redundancy for the NICs and the switches. Does this configuration will work, and also what type of teaming is supported, as I was planning to have one NIC active and one standby, but can I run this configuration with both NICs in the team as active with load balancing?
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Feb 28, 2013
when try to build etherchannel trunk in between this unit C4510 with the other C4506 Physically can see that the slot 2 shows red light. I had tried reinsert the line card of slot 2 still show same error below when show log,
after swap current line card at slot 2 with new line card show me need to "try reinserting module" ? What happening on this? If this what we did now is we already assume line card is not an issue, could this be a chassis proble? Hope to get your feedback sooner possible.
%C4K_CHASISS-3-LINECARDSEEPROMREADFAILED : FAILED TO READ module 2's serial eeprom , try reinserting module
#sh module
Chassis Type : WS-C4510R+E
Power consumed by backplane : 40 Watts
Mod Ports Card Type Model Serial No.
---+-----+--------------------------------------+------------------+-----------
1 48 10/100/1000BaseT EEE (RJ45) WS-X4748-RJ45-E CAT1644L4UZ
3 48 10/100/1000BaseT EEE (RJ45) WS-X4748-RJ45-E CAT1644L4N8
4 12 10GE SFP+ WS-X4712-SFP+E CAT1645L2X8
5 4 Sup 7-E 10GE (SFP+), 1000BaseX (SFP) WS-X45-SUP7-E CAT1645L47F
6 4 Sup 7-E 10GE (SFP+), 1000BaseX (SFP) WS-X45-SUP7-E CAT1646L04B
7 12 10GE SFP+ WS-X4712-SFP+E CAT1645L2U4
8 12 10GE SFP+ WS-X4712-SFP+E CAT1645L2VC
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Jan 7, 2013
I'm looking at the possibility of purchasing a few 3750 to build a switch stack to replace my current core and access switches. I'd like for the stack to support server, SAN, and user traffic, as well as provide simple switch management, redundancy, and failover. I've also been looking at the 4500, 6500, and Nexus series switches (although the Nexus switches maybe a bit too much for my network).
My current environment consists of 3560's as the core/distribution/access switches, a mixture of Hyper-V and VMWare environments (although we're slowly migrating to Hyper-V), an HP SAN (P4500), and about 100 users. Any issues going with the 3750's or have an alternative, more efficient solution?
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Aug 29, 2012
I have some questions in regards to network equipment I want re-utilize for my distribution layer in one of my buildings.The choices at the moment are:
OPTION 1.) 2x WS-3550-12G's (HSRP)
OPTION 2.) 1x WS-6509 with cards:
What option would be better from a performance aspect? We want to have network, voice, and wireless data go through this distribution layer switch(es).This is exisiting equipment I already have and can not buy anything else at the moment.
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Oct 26, 2012
I have a site that is very dense, but not high throughput. I have 4x48 port switches all 3560 and 1 2851 router. The switches are pretty much full to the brim but the site is never completly lit, they just like to move around a lot. However i wanted to provide this site with as much redundnace as possible. So my first thought was to build redundant pathing with the switches so that they could loose a switch and not have a single point of failure. So therefore I built a ring. SW1 to SW2, SW2 to SW3, SW3 to SW4, SW4 to SW1. To make this even more redundant against port hardware failure, i used two uplinks for each and built an etherchannel. is it good practice to use Etherchannel and Spanning Tree together?So i now have a good redundant LAN switching topology. I have multiple VLANs at the site so I am using Rapid-PVST. I did not set priorities on the switches as I don't think that is really truly necessary, but correct me if I am wrong!Ok so next step is to make sure that my WAN connection for all of these switches is redundant. I have a 2851 router, with 1 of the built in interfaces dedicated to our ethernet hand-off WAN connection (MPLS in this case using BGP routing). The other would be used as an uplink. I also got an additional card for the Router so that i can have redudant local LAN connections. I then built up some IRB bridges so that I could uplink the Router to SW1 and SW3. Is it good practice to use IRB Bridging on a Router to provide redundancy?So at this site i have the first part running, and it works pretty well but I have had 1 strage issue, which has to do with after a failure and re-convergence of spanning-tree, it seems that DHCP starts failing to work. I actually had to go into each of my switches make a dummy VLAN interface and put on helper-addresses to get them to work. They are not L3 switches (programatically speaking) so they should just forward the broadcast packet onto the router, which DOES have the helper-addresses programmed,Also at another site I have the bridge router setup configured, just without so many switches, and no etherchannel between the switches. This seems to work flawlessly, but the site is very small so performance issues would be difficult to spot since they are just thin-clients coming back to a Citrix server over a single T1.
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Jul 17, 2012
I am position to migrate from CatOS 6509 switch to native IOS 6509 switch. long time ago, there was some site to convert automatically based on copy and paste onto the tool, but i can not find.
Does anybody know how to convert CatOS configuration to Native IOS configuration ? It is not IOS change, but it is configuration convert.
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Mar 24, 2013
In 3750 switch,I have configured intervlan routing.I have three vlans Vlan 10,vlan 20,Vlan 30 and I have assigned IP address for that Vlan.In vlan 10,I have connected one systen gigabitethernet 0/1 interface.From my system I am able to ping vlan 10 ip address but I can't able to ping other vlan ip address (vlan 20,vlan 30).Is it possible to up the protocol for all that time.
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Mar 4, 2012
I've one Cisco 3750G-12S with ip routing enable, the swtich is with IP Service firmware, with PRR support.Currently set my default static route 0.0.0.0 0.0.0.0 10.1.18.71 to my Firewall A Currently all of the VLAN for will be routed to 10.1.18.71
I've created a new VLAN 2 for my 10.1.2.0/24 network with the VLAN interface 2 ip address 10.1.2.10, my intention is to route 10.1.2.0/24 traffic to my 10.1.2.1 by creating the access list and route-map.
I've configure my test pc with a static ip and my gateway pointing to 10.1.2.10 (VLAN 2 gateway) , i'm not able to route to 10.1.2.1.
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Jan 18, 2013
Why does mine show this and NOT all 4 ports and 1 wan port?
Manases#sh verCisco Internetwork Operating System SoftwareIOS (tm) C831 Software (C831-K9O3SY6-M), Version 12.3(2)XA7 [code]...
How do I make it show all my ports? when I plug in something to port 1-4 it shows me on the log that I plug in to e0. I got port1-4 and 1 wan port.
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Mar 8, 2012
I was recently given a PIX 501 router. I am very new to the world of Cisco, but want to learn. I got a few things setup on the router but, am not sure how to get it to use my DSL connection. My DSL modem IP is 192.168.2.1. Below is my router config. What more do I need to do? Also, is the outside IP not the IP of the DSL modem?
PIX Version 6.3(1)
interface ethernet0 100full
interface ethernet1 100full
nameif ethernet0 outside security0
[Code]...
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Mar 17, 2012
i have the asa5505. the configuration of asa 5505 is:
: Saved
Code...
i analyzed this traffic i see problem with the nat- Asymmetric NAT rules matched for forward and reverse flows. where i made error?
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Mar 15, 2012
how to backup the configuration of ACS 5.3 then restore it on the secondary ACS 5.3 Appliance in order to save time without configure the 2nd Appliance?
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Mar 19, 2012
i have linksys modem which already running for differents vlans i cerated another different vlans 10 amd 20 for 10 and 20 i need internet how should i configure internet on another core switch3750
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Feb 13, 2013
I have been using a Cisco 877 to connect to BT broadband and it was working fantastically with no issues. For reasons outwith my control we have moved to 02 and I cannot get the cisco router to connect (the supplied router works fine). O2 support is limited as they say they will not assist in the config of third party routers but they have supplied the below (the line has a static IP). I have also included my current config which was working fine with BT. I have attempted to write in the updated info but have been unable to get the line to connect. [code]
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Jan 12, 2013
i have a router 2921 with the aproprieted voice card for E1 and licenses. I would like to know how to configure it for incoming and outgoing calls. I already configured the ephone and SIP phones for internal calls. now i just need to configure it for send and receive external calls.
Router:
IOS: c2900-universalk9-mz.SPA.153-1.T
CME: 9.1
ISP from Brazil:
type: E1
signal: R2 Digital
Channels: 32
Phone Number Iniital: XXXX-9250 (main)
ephones-dn numbers: 9250 to 9280
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Nov 28, 2012
I have a network behind an 861 and users are unable to access e-mail from the local exchange server from their iPads using the 802.11wireless network. The wilrelss network is working fine and the iPad users connect fine.I was told that that i need to configure "hairpin DNS".
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Dec 27, 2012
I'm currently trying to get up to speed on a 1941W ISR. I belive i have most of the configuration correct based on reading the documents on this site. However, i'm noticing that my lan to lan network performance is very slow. Peaking out about 3mbs. I was reading some documentation that suggested MGF (MultiGigabit Fabric) might resolve this problem.
I have a basic setup in my test environment trying to emulate a branch deployment. 1941W connected to a access switch (3400).
- I'm getting slow perfomance (thoughput) between the vlans 66,30,10. Will MGF fix this problem? How do i configure it?
Building configuration...
Current configuration : 7474 bytes
!
! Last configuration change at 09:26:04 PCTime Fri Dec 28 2012 by xxx
! NVRAM config last updated at 09:26:05 PCTime Fri Dec 28 2012 by xxx
[Code]......
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Feb 21, 2012
We recently switched a faulty N5548UP with a replacement and everything went fine, with the exception of one minor thing.
We're currently unable to authenticate using tacacs+.
When trying to enter the command 'aaa authentication login default group [groupname]', the following msg appears: too big pss key or value size could not update aaa configuration
We're running 5.0(3)N2(2b).
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Jul 17, 2012
I currently work in the IT field part-time as a end-user support technician while I am finishing my Bachelor's Degree in Network Administration. I'm not completely new to networking at this point, but I am by no means a master of it either. The basics of small networks (less than 10 PCs) and the lower-end of small business grade Cisco equipment are not unfamiliar to me. Up until this point however, I have had very little experience with any higher-end Cisco networking equipment.
Now on to the questions, which may seem like the answers should be obvious, but let's face it, I do not have the resources to own much equipment myself at this time for experimentation purposes, nor does the school I am attending have a lot of financial resources to provide us with recent hardware to learn on. What I want to know are a few things about PoE as implemented on Cisco devices, specifically the SG200-50P small business series switch. According to the technical documentation, the switch supports PoE on 24 of its 48 ports, specifically 1 - 12 and 24 - 36; simple enough. The switch is currently installed in an office that has less than 24 connected devices, but that is currently expanding. None of the PoE ports are utilized as of yet, but going forward, there will be more than 24 connected devices. Will another switch need to be installed if the additional connected devices (PCs and printers) are not using PoE, or is the PoE an auto-sensing feature that will simply remain disabled if a device that does not require power over the network cable is connected? Is there some setting that needs to be changed through the management interface to keep devices that should not be drawing power from doing so?
There will likely be some additional questions generated by my inquiry, and I fully understand if these are completely novice questions, but I admittedly do not know the answer. When I Googled it, I was greeted by a few hundred thousand results, the first dozen or so pages of results all being for places to purchase this particular type of switch, so I thought I would try my luck on the forums of the place that made it.
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Jan 9, 2013
On a recommendation from a network engineer, I got a used Cisco 891. Having worked with small business routers most of my working life, I thought this should not be a problem. However, I had no clue these things used a console and command line to initialize. I have the console cable, am able to console into the device, but am haphazardly issuing command lines straight out of the PDF manual but cannot get Cisco CP to discover the device.
From what I can tell, I am stuck at the point where the manual tells me to enable http server. I ran the command lines several times, executed write mem where available, but when I run the show services command, http is not enabled.
And if you do refere to command lines, I was reading some other forums and they were speaking of "run this command, run that command" but I could not make out the correct syntax, in what mode, whether it be config or config t, etc. So I might need a wee bit of handholding.
I'm hoping that once I can get Cisco CP or CPE to discover the device, I can make my way through the GUI to configure since those usually do make sense to me. As of now, I'm in the thick of it ...
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Sep 28, 2012
I am trying to configure a 891 W to basically provide DNS from my ISP to my internal clients on the 891 W. Currently when I am on a PC I can see that I receive my IP information along with the correct ISP DNS IPs. However when I try to connect or resolve a URL it fails. Nor can I perform an ns lookup from the cli of the 891 W. I seem to be having a translation issue with DNS.
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Dec 10, 2012
I am trying to configure Cisco SG300-52 switch for the first time and stuck without CLI configuration option. The configuration can be done using GUI, however, configuring using CLI would be more comfortable (as I am used to work with CLI of other Cisco switches)..
I was able to lo gin to switch using SSH, but the CLI appears in MENU format and was not able to find any way to go to CLI mode.
As per some blogs, in SG300 switches CLI mode can be accessed using Ctrl + Z in Menu, which did not work either in my case.
Switch is running with latest firmware version Sx300 Firmware Version 1.2.7.76.
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May 2, 2011
I have a headquarters office that has recently bought a new voice system.
We have a site to site connection from the head office to 3 remote offices. All have ASA5505 firewall.
I have created 2 interface on the ASA5505: 1: inside with vlan1 and switch port port12: voice with vlan100 and switch port port2
Port1 on the asa goes to port 23 on the switch for vlan data
Port2 on the asa goes to port 24 on the switch for vlan voice
Port23 is member of vlan1 data
I added vlan100 to port 24 but by default vlan1 is member and i can't remove it. Its greyed out
All ports on the switch are member of vlan1 and vlan 100 because the port on the switch goes to the phone and from the phone there is a port that goes to the PC. Phones are getting addresses, and PC as well.
I am having a kind of loop because there is 2 exit for vlan1 (port 23 and 24) and that's slowing down my system and sometime i loose the connectivity to my servers.
When i do a show arp on my asa, i do see that some IP are beeing learned on the wrong interface. some PC addresses 192... are on the voice and some voice IP 10.10... are on the inside.
I am pretty sure that the problem comes from my switch configuration.
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May 1, 2013
I've goggled and searched here, and I can't seem to find what I'm looking for. I need to make a couple changes to a clients Cisco 800 series router, enable ping replies add ip addresses to the ssh ACL.I can't seem to find any basic commands for CLI anywhere.
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Jan 18, 2012
I have a Cisco 850 router that whas having problems getting an ip address via DHCP. I did some stuff on it but that didn't work, so I rebooted the router to go back to my last saved startup config. When I turned it back on and connected t othe CLI console I got the "Would you like to enter the initial configuration dialogue?" message. Thinikng I just forgot to save anything to the startup config I went through the initial set up again and made sure to save everything to the startup config. After going through the intial config and setting up a vlan to assign DHCP to clients I saved the config and rebooted, upon reboot and connecting to the CLI console I got the same "Would you like to enter the initial configuration dialogue?" message. Tryign the setup once more and making sure everything was saved to startup config I rebooted again just to make sure the changes would stick, and sure enough they didn't. Whay is the config not saving to the startup config?
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Dec 10, 2012
I'm looking to do a basic QOS configuration which states that VOIP traffic has priority over anything else.
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Jan 27, 2013
.If the fex is physically disconnected from 5K, Should the fex config be retained or lost?I have a 2148t fex which was single homed to a 5K.The Fex was physically disconnected from 5K, but its logical configuration is still present on port channel and physical interface.when I do show fex XXX , it says not found and no fex information is available I have not tried connecting the fex back to 5K to see if the fex config is retained.
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Mar 10, 2013
I am just going to deploy some new 4900Ms for a customer. Want to know if configuring management for 4900 (everything like NTP, AAA, SNMP , DNS ) is doable through management interface in management VRF and there are no caveats to be aware of.
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Jan 2, 2013
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.
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Jan 17, 2012
At a college we have Ciscos 2960 and are trying to setup VLAN tagging and also using RST or MST. The traffic on the jack should get tagged vlan 248.We were told by the college that Ciscos in the labs will not work with the Alcatel switch that provides access to the lab. That Alcatel is in Bridge 1x1 mode. The college will not change the configuration on the Alcatel.We got the Ciscos to do VLAN tagging and can get network access. However the spanning- tree is not read properly. Cisco does not properly read the Alcatel's RSTP (since the Alcatel is doing tagging on the BPDUs). It places the root of the spanning tree under vlan1 instead of vlan248.
The college strongly recommends HP Procurves and we are using that as test.The following is the configuration on the HP and it works with no effort (it reads the spanning-tree information as MST)We will end up getting HPs instead, if the Cisco cannot work with the Alcatels.
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Dec 20, 2012
Recently I'm working with my client to setup their network and he want me to limit user access internet bandwidth to 2 Mbps and the topology show below.Users ---> Switch ---> NAT Router ---> (int gi1/0/24 - qos apply) Edge Switch ---> INTERNET ROUTER (12Mbps) --->> INTERNET,This is my configuration, but it doesn't work, the end user still able to get more than 2Mbps internet speed.Access-list 100 permit ip any any dscp default,class-map match-all QoS_Floor_Limit, match access-group 100.
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