Cisco Switching/Routing :: Connect Switch 3560 To NTP Server Based On Linux?
Jun 24, 2012
I'm trying to connect Switch 3560 to NTP Server based on Linux, the NTP is working fine but the switch is sync with the Server:
address ref clock st when poll reach delay offset disp
*~10.0.0.70 208.53.158.34 3 42 64 377 1.7 -2.49 0.1
* master (synced), # master (unsynced), + selected, - candidate, ~ configured
Clock is synchronized, stratum 4, reference is 10.0.0.70
nominal freq is 119.2092 Hz, actual freq is 119.2093 Hz, precision is 2**18
[code].....
But server has on time and the Switch another. I test this NTP with CUCM and is working fine, the issue is with ther server?
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Apr 17, 2013
I want to replace an existing 3560 Switch with another switch of the same exact model and IOS. However, this switch that needs to be replaced is the VTP Server of my LAN at this location. When I replace the switch I will just use the same exact running config but I'm concerned about the vlan.dat file. Do I need to copy that file over to the new replacement switch and if so, what is the best way to do that?
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Apr 26, 2012
I'm attempting to configure a Catalyst 3560-X Switch to act as a DHCP Server. There is documentation that supports this feature. Below is my config procedure however after the completed procedue no IPs are handed out to clients. [code]
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Apr 16, 2013
I have installed a switch (3560) that was from another site and changed all it's config and hostname etc and it is now live, however the syslog messages still see the old hostname, what could be causing this?
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Apr 19, 2012
Cisco 3560 does not support "set ip next-hop verify-availabilty". I need this command in my config. "set ip next-hop" do not do the same job.
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Apr 17, 2012
I have tried to make policy based routing on Cisco 3560. I use ipservices ios (SW version 12.2.(50)SE3 and SW-IMAGE C3560-IPSERVICESK9-M) For below configuration there is no problem and pbr is working.
“Access-list 100 permit ip host 1.1.1.1 host 2.2.2.2
Access-list 101 permit ip host 1.1.1.1 host 3.3.3.3
Route-map pbr1 permit 10
Match ip address 100
Set ip next-hop verify-availability 1.1.1.2 1 track 11
interface fasthethernet 0/1
ip policy route-map pbr1”
But when i add another sequence to the "pbr1" with another sequence number like that.
“Route-map pbr1 permit 11
Match ip address 101
Set ip next-hop verify-availability 1.1.1.3 1 track 12”
pbr is not working. Switch gives message "PLATFORM_PBR-3-UNSUPPORTTED_RMP:Route-map pbr1 not supported for Policy Based Routing”"ip policy route-map pbr1" command not shown in the running config. And "show ip policy" output is blank.Configuration guide says you have insert many sequence to the route-map with the same name. And also this command is not in the unsupported command list.
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Jan 3, 2012
I want to implement port-based and MAC-based in these two switches: 2960 & 3560 (both of them have this IOS version: 12.2(55)SE1). And I haven't found a way to implement both of them at the same time. This is what I got:
ip dhcp use subscriber-id client-id
ip dhcp subscriber-id interface-name
ip dhcp excluded-address 192.168.0.0 192.168.0.2
ip dhcp excluded-address 192.168.0.251 192.168.0.255
[code]....
With this configuration I can use port-based, but not MAC based. If I remove the first two lines and change the last line for this one:
address 192.168.0.7 client-id 0112.ae1d.af58.60
Then, the computer with that MAC address got the correct IP, but then the port-based doesn't work. Also, I got this line in the interface what I want to use MAC-based:
ip dhcp server use subscriber-id client-id
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Apr 3, 2012
I would like to set up "IP SLA" between L3 switch(supports many "IP SLA" versions like "UDP Echo Operation", "TCP Connect Operation", "UDP Based VoIP Operation", "ICMP Echo Operation", "FTP Operation" etc) and GNU/Linux server. Are there any "IP SLA" test types which are supported only between two Cisco devices?
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Sep 11, 2011
just want to confirm if I could use the 2x 10GE uplink ports of a cisco 2960 to connect to my Server directly?
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May 6, 2012
Recently I have faced following problem in my office, We have purchased two new Dell Server Power Edge R910 with built-in 10GB FC Network card. Service tag of this two servers are given bellow.
1. 7D94C2S
2. 6D94C2S
You can can Check specification of this two server from dell website{ URL}
We have two CISCO switch and model is given bellow:
Brand: CISCO
Model: WS-C3560E-12SD
We want to connect server to switch through FC cable and both switch have SPF module. But when we connect server to switch, link do not establish even switch and server port light become off.
Then we have tested the following things:
1. Connect server to server through FC cable, it is okay.
2. Connect switch to switch through same FC cable, it is okay.
I don't understand why it is not working.
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Jun 5, 2012
I have issue with 3560 switch QoS configuration . I checked in cisco site about mentioned model QoS configuration.once we mark the frame and map the CoS to DSCP and once it enters into switch and it processes according to LAN QoS configured on interface
we have configured both the commands shape and share.
once it leaves the switch and enters into Edge router and if we do not have configured QoS in router which is normally MQC , how does it process each packet ?Do we need to have end to end QoS configured in LAN ?
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Feb 12, 2012
I have a cisco 2950 switch, connected with 4Mbps of internet and number of users will access the internet. There is no restraction on bandwidth limit for users, if any body use high download the remaining users are facing the slow browsing problems.
So, if i can put a bandwidth limitation for every users the problem will be solved. how to restract the bandwidth on user bases.
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Dec 8, 2011
The last few days I've been exploring options in getting rid of some old routers accross a wan connections. I have a cat 3560 to play with and I thought I would try and use the no switchport command test out routing with switch. I've got some type of route issue and I tried a few things which I thought would fix the issue but had no effect. I'll post the config and a few commands so you can see what the basic setup is.
Here we can see in the arp that it knows about both 10.7.1.2 (PC unable to ping 10.3.3.254) as well as 10.3.3.254 (ASA).I tried adding in a ip route of 10.7.0.0 255.255.0.0 10.3.3.110 as well as 10.3.3.254. Neither produced the results I wanted allowing 10.7.1.2 (PC) to ping the ASA (10.3.3.254). [code]
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May 8, 2012
I have an environment of 3 X 3560G of which I have 1st switch-CORE(f0/10) connecting to the VPN router(CE) interface-f0/0. Remaining 2 Cisco 3560's(Access) are connected to Gi0/1 and Gi0/2 on the 1st switch-CORE via gi0/1 . On all three switches I have created multiple VLANs and assigned ports to these VLAN. The switch to switch connection is trunk allowing all VLANs created on all these 3 switches. Now the issue is how I am going to have all these VLANs routed through single interface on the routeri-e f0/0, as all these subnets will communicating to remote site over VPN. What should be default gateway on the 2 Access switches and the CORE switch, also what static route should be on router to reach all subnets(VLANs) created on these 3 switches.
I have read inter-VLAN routing i-e creating sub interfaces on router but dont want to proceed with that and looking for any other way to have my VLANs talk on all three switches and then are accessible to remote site ove VPN?
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Jun 4, 2013
I am trying to get my workstation to talk to a workstation on a different sub-net through a Cisco 3560 switch. The switch is running the following IOS version: [code]
My primary network is 172.16.0.0 and I am trying to connect to a device on a 192.168.111.0 sub-net. [code]
What would be the best way to get the two workstations talking via the switch?
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Feb 26, 2012
how to take the event log of Cisco switch 3560, its argent.
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Nov 22, 2011
I have a 3560-48 switch running Cisco IOS Software, C3560 Software (C3560-ADVIPSERVICESK9-M), Version 12.2(44)SE3 and i need to implement basic QOS commands to the fast Ethernet interfaces as well as the gig interfaces and Also I need to create port channels on the switch and need what the port channel syntax are as well for that particular IOS version?
I have only read only access and i can't see what the QOS and Port channels syntax should be for that IOS version.
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Jul 22, 2012
I'm in the process of configuring QOS on a 3560 routing switch in a GOLD, SILVER, BRONZE priority type scenario.
Firstly, I understand that this config will add a tag of "precedence 5" to a packet if it matches the "ACL_QOS_GOLD_In" access list. Question is does the router see this "precedence 5" tag and then sets the priority, or am I missing something in my config where at present it just sees the "precedence 5" and doesn’t act on it ?
Secondly, Since the "precedence 5" tag has already been added to the packets, do downstream routers see this tag and act accordingly or so I need to configure those is well ? [code]
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Jun 7, 2012
configure QoS on 3560 switch i have taken the template from cisco configuration guide since we have different QoS configuration on each model.
below is the configuration :
configure terminal
mls qos
end
mls qos map cos-dscp 0 8 16 26 32 46 48 56
no mls qos srr-queue input cos-map mls qos srr-queue input cos-map queue 1 threshold 2 1 mls qos srr-queue input cos-map queue 1 threshold 3 0
[code]....
Currently all the cisco phones are connected to this switch and configuration with only one vlan that is voice vlan .
1) what is the outcome of this configuration , i mean, what will be the expected output ? end of the day we need to prioritize the voice traffic but why other commands including threshold and buffers are mentioned with respectives queues , if I need to explain that what am i expecting out of this configuration ?
2) this is LAN QoS which i understood but again , do i need to configure policy-map along with class-map which is MQC on this switch ?
3) i have edge router where i have MQC already configured but confusion with this switch which is working as a Access switch .
4) I referred the cisco QoS document for the respetive model whereas we have policy-map configured on the same switch with class-map .
My understanding is if we have configured the LAN QoS , and mapped the CoS value with DSCP , we need not to have MQC.
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Nov 9, 2011
I am configuring some quotes for a customer whom I will be building a wireless network for. The wireless network will support about 60 AP's, as well as some other wired drops. The customer is working with a wireless vendor for the AP's, but I will be able to sell the switches for the network.
I want to ensure that he is pushing Gig and POE on each copper port for the AP's, since they will be "N" capable. I have selected several 3560 models which are in 24 port models, and I also think i have a requirement which mandates a 48 port in another location. What I have not been able to find in the Enterprise switch line is an 8 port which supports IOS and POE.
That being said, and since I am also "Select" certified, I went out to the SMB site, and did find that there were two models in the Small Business 300 line (models SG300-10P and SG300-10MP) which seem to support Gig ports as well as POE. I looked over the specs for each one of the two respective models, and I was not able to find what the difference between each of these two are. In other words, the specs, line by line, were identical.
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Nov 28, 2011
we have a class based qos scheme (see attached file) on our 4500 series access switches and we have a access 3560-48 switch runing IOS Version 12.2(44)SE3 my question is can I use the same QOS scheme for the 3560 switch?
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Nov 15, 2012
Does the 2960 switches with LAN-Lite support DHCP Server Port-Based Address Allocation?
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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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Oct 31, 2012
I wanted to upload image having .tar extension in Cisco 3560 switch. What are the steps to upload.
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Feb 12, 2013
I have observed a situation where one of our cisco switch 3560 is rebooting daily at periodic times.We have checked the power cables and source everything is fine and still clueless whats causing the issue. [code]
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Aug 19, 2012
I want to configure Cisco 3560 SWITCH with IP cameras. I need to configure the ports connected to Camers. IP addresses to the Cameras has been assigned.
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Sep 26, 2011
I have an issue with a 3560 in my network, after sometimes it fails to give out power to some ip phones,while others are not affected and below is the message i get
"Power given, but Power Controller does not report Power Good"
output of sh power inline and sh env all : everything seems to be ok on the switch
#sh power inline
Available:450.0(w) Used:48.0(w) Remaining:402.0(w)
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Gi0/1 auto off 0.0 n/a n/a 15.4
Gi0/2 auto off 0.0 n/a n/a 15.4
Gi0/3 auto off 0.0 n/a n/a 15.4
[code].....
It's solved by a reboot of the switch, i could have suspected a power environnment issue but it's the only equipement disturbing in the network.
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Feb 7, 2012
Are the LC SFPs interchangeable with the 3560 V2 POE switchThe P/N number we have on the LC SFPs are 30-1301-04.Will this P/N number suit bothe the 2960-S and 3560 switches
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Aug 20, 2012
I am trying to configure 802.1x wired on a 3560 switch and don't see the required commands under the interface. I am running c3560-ipbasek9-mz.122-55.SE6.bin. I was thinking it might not be available on the ipbase image, but I do have the commands on a 3750g running the ipbase image, so I'm not sure about that.
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Sep 10, 2012
i am facing an error while upgrading the IOS image on 3560 switch. [code]
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May 25, 2012
I 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.
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Jul 23, 2012
I have a cisco 3560 24PS and its connected to two ADSL broard band routers.one is a personal broadband line using a Billion ADSL broadband router, and the other is a business broardband line using BT's 2wire broadband line.on the Billion routers i have various things attached like a NAS and a printers, both wired connections. then i have laptops and phones that connect over wifi, so its configured to act as a DHCP server
the only thing conncted to my 2wire router is my company's laptop (wired or wifi depending on where i'm working from), so again i have it working as a dhcp server.The switch is configured with multiple vlans, with dhcp scopes assigned for each vlan.I have a static route pointing all traffic to my Billion ADSL for internet connectivity.
The problem i'm having is that when i turn on the cisco switch, all wifi conected devices loose their conection. only 2 things get it working again, a reboot of the router, or disabling then enabling the DHCP service on the router.upon further analysis i was able to find out that the devices were not able to pick up an address from the router. again i looked deeper into this and i can see the following on logs of my router: [code]
so it seems that the router tuns off its DHCP capabilities because it detects that my Cisco switch is running DHCP services. I need to figure out how to keep the billion routers DHCP running when ever the switch is turned on.is there a way of filtering out any DHCP chat from the switch to the router?
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Sep 12, 2010
I have the following problem with
Situation:
- 2x 3750G-12S Distribution-Switches (DS) and several 3560/2960 Access-Switches (AS)
- redundant Fiber optic uplinks between AS and DS
- Cross-Stack Etherchannel config on all uplinks
- UDLD aggressive mode configured on all uplinks
Problem:
- when I reload the DS and the switch comes up again, I've lost the connection with several (not all) AS
- looking at the AS log I found the following error message: "%UDLD-4-UDLD_PORT_DISABLED: UDLD disabled interface Gi0/1, aggressive mode failure detected"
Cause:
- in the log of the AS I don't see intf Gi0/1 go down during the reload of the DS
- this means the DS didn't shuts down all its ports during the reload
- but this also means that UDLD on AS didn't know about DS reload, and therefore didn't resets counters
Workaroud/Solution
- I'm now configuring errdisable recovery on all AS
So I'm forced to configure errdisable recovery, even if I don't want.
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