Our company bought a Cisco 2960-S to add to the network, We gave the interface VLAN 1 an IP address, and tried to attached the switch to a jack port on the wall to test if it gets a link or not. The status of the port blinks amber and stays contionous amber, I have searched the manual of the switch and it says that amber means that the port is being blocked by STP.
View 4 RepliesI have Catalyst 2960 S (WS-C2960S-48FPS-L) Switch. I have plugged in SFP module but still interface is down and line protocol down. Is there any configuration to enable SFP module and make the interface up?
This port is connected to nexus 5 k.
I have a Cisco 2960 48-port switch. I enter "sh vlan" and it lists all the VLAN's. One of the VLAN's listed is "10" with the name "EPIC". What is the quickest way to find out what ports, if any, are assigned to this VLAN?
View 2 Replies View RelatedIf I knew the IP address of a host, can we know on which port on the switch its connected. The switch model is 2960
View 6 Replies View RelatedTo rate limit the 2960 switch port to 1 MB.I have made the specified chnages , how ever still it is reaching more tha 1 MB
Hard coded the bandwidth of port to 10 MB and have applied the specified command srr-queue bandwidth limit 10.
One of my engineers issued a command to turn off port security on a number of ports using the range command. The command failed on the first attempt due to a tacacs auth failure which I suspect is due to a low tacacs timeout value. The engineer then reduced the number of ports in the range command and re-issued the config change after which the switch just crashed and rebooted.
The logging buffer on the switch displays the following:
000072: *Mar 1 00:03:00 GMT: %PLATFORM-1-CRASHED: System previously crashed with the following message:
000073: *Mar 1 00:03:00 GMT: %PLATFORM-1-CRASHED: Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(50)SE3, RELEASE SOFTWARE (fc1)
000074: *Mar 1 00:03:00 GMT: %PLATFORM-1-CRASHED: Technical Support: [URL]
000075: *Mar 1 00:03:00 GMT: %PLATFORM-1-CRASHED: Copyright (c) 1986-2009 by Cisco Systems, Inc.
000076: *Mar 1 00:03:00 GMT: %PLATFORM-1-CRASHED: Compiled Wed 22-Jul-09 07:03 by prod_rel_team
000077: *Mar 1 00:03:00 GMT: %PLATFORM-1-CRASHED:
[Code]........
I have done some searching and this could be related to bug CSCsq71492. I have tried using the output interpreter but it is still down.
I have upgraded a couple of 2960G switches to 12.2.52SE and now discovered that TCP port 4786 is open on the switches.
I have looked in the document{URL}, trying to find a way to disable this function/port, but didn't find anything useful. Any way to disable this function/port?
I have a couple of Cisco 2960's sending syslog messages to a remote syslog-ng on port 514 (standard).
I need to set another Swtich so it sends traffic to the same syslog server but on another UDP port (such as 714),, is that possible,? I cannot find the option on the documentation.
I am configuring a Cat 2960 port for connecting a VOIP phone, authenticated by MAB. On connecting the phone, I get the port authenticated and assigned to the correct VLAN, with LLDP-MED advertising the correct voice vlan. However, I then see no traffic from the phone on the switch. I can see the MAC address of the phone is learned in the right VLANs, but the mac address is showing as "Drop", which normally means the address is statically configured to be blocked. There is no static mac address table blocking configured on the switch.
Switch Version
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 50 WS-C2960-48TC-L 15.0(1)SE3 C2960-LANBASEK9-M
Port configuration
interface FastEthernet0/1
description "Standard user port"
[code].....
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
i have configured SPAN over cisco 2960 to monitor source port traffic but after configuration i dont able to get response from destination port as my NMS is attached on destination port so i lost its web interface.
Configuration is as under.
monitor session 1 source interface gigabitEthernet0/5 (Source Port on Vlan 100) monitor session 1 destination interface gigabitEthernet0/1 (Destination Port on Vlan 200)
I am planning on deploying a 2960 switch and will need to uplink it to a 4510 switch. There are 2 TenGig Ports available and I was thinking of uplinking one of them to the 1Gb SFP port on the 2960. Would this work?
View 4 Replies View RelatedWe're going to be switching some of our gear from Foundry to Cisco, and were looking at the WS-C2960S-48TS-L. We currently have 3 different VLAN's, and I wanted to have 1 uplink back to our firewall (ASA 5550) and then let the firewall do the routing between the subnets. I realize that 1 link will carry the traffic twice then, but is that possibly with those switches to have all three vlans assigned to one port and then just let the firewall do the routing between the vlans or would I need to have 3 uplink ports back to the 5550?
View 1 Replies View RelatedI am testing 2960 24 S with storm-control and Errdisable Port timer interval 60s , connected HUB on fa0/17 to make traffic / loop.After Strom Control detection the interface goes down thats ok after 60s they will try to recover the interface and going up although the loop is still there.For my understanding if the interface detect still a loop on that interface they will disable the port again for 60s and will check again. [code]
View 7 Replies View RelatedI configured port security on my 2960 switches with the following commands: [code]
The problem is that when I should change someone's PC, first I disable port-secirity, then I clear all the mac addresses learned on the interface, then I plug the new PC and enable port-security. The new PC couldn't connect to the network and it's mac address has not be learned on the interface. Why?Which commands should I use to clear an old mac address and enable port-security with the new mac address.
i want use CACTI for monitor my bandwidth so i have a question how can i enable snmp for a switch port ? or i shoudl just enable snmp from configuratiopn terminal and then in CACTI i will choose which port will be monitor? can i do something that CACTI connect to my switch with a encryption key ? i have cisco 2960 48 port switch
View 2 Replies View RelatedIn my network we use all cisco 2960 switches, problem is when someone copying 4gb data or high from one switch to another switch, by that time rto (Request time out) is coming.
router
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[Code]....
1. when user 1 copy data from server ,at that time who is in switch2 behind like user2 ,he is getting problem like when ping to default-gateway,or rto is coming and network is very slow .
2. when i open sw2,sw1,sw3,trunk ports utilization is very high except sw4 to sw1 trunk ports,who behind sw4 like user4 ,he is not getting problem.
3.all switches trunkport in my network is faster ethernet and i have no option to connect trunkport to gigaehternet and ethernet channel.
I am experiencing the same problem described in this post {URL}. I have seen this happen on different networks, with different equipment attached. It happens on both 2960 and 3750 switches. Basically the connection drops, and we see in the web interface "Port is Disabled". This appears to happen every 10 minutes.
On the CLI, the status shows as connected.
Port Name Status V lan Duplex Speed Type
Fa0/38 connected 1 a-full a-100 10/100BaseTX
I have ran cable diagnostics while the drop out is occurring.
Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ----------------- ----------- -------------------
Fa0/38 100M Pair A 28 +/- 15 meters Pair B Normal
[code]...
During the outage, I see the duplex fluctuate between full and half. The outage occurs for approx 90 seconds. If I fix the duplex and speed at both ends, the outage reduces to around 30 seconds. If I apply spanning-tree port fast the outage reduces further to around 10 seconds. Before I change any configuration on the port, the logs show the interface going down
Aug 16 13:06:51.875: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/38, changed state to down
Aug 16 13:06:52.874: %LINK-3-UPDOWN: Interface FastEthernet0/38, changed state to down
[code]...
However, once I apply the configuration nothing is logged. However we can still see the connection is disappearing for around 10 seconds. I suspect the issue wasn't resolved for the person reporting the problem in the link above, but because the outage is minimized, and not being logged it is going unnoticed.
Is there a way to identify if a switch port is burned via CLI? I have a 2960-48PST switch and some ports don't provide power to a PoE device connected. When I change the port, the device turns on.
View 3 Replies View RelatedI want to configure switch port bandwidth limit for my Catalyst 2960-48, is there any hardware / ios limitation? can I configure it at all 48 switch ports?
View 1 Replies View Relatedhow can i limit bandwidth on a gig port of 2960 or 4506e switch?
View 9 Replies View RelatedIs it possible to obtain a replacement rackmount kit for a 2960 48 port switch? I've had a read of the manuals but can't see a part number specified. The part number suggested to me (by BT) is for the 8 port version, which is not much use.
View 2 Replies View RelatedIn s SPAN session , normally the destination prt is used for monitoring purpose only. But could destination port be used to access the equipement or PC connected to that port , for a 2960 LAN BASE image switch .
View 2 Replies View RelatedI need to configure a Cisco 2960 switch as a DHCP server. The current IP address will be on a different seed than the DHCP addresses. i.e.
Switch IP = 10.1.2.3, GW = 10.1.2.1, Subnet = 255.255.255.0
DHCP addresses would be 192.168.1.1 - 200, GW=???? (10.1.2.3?) and subnet would be 255.255.255.0
2960 switch stack (flex) Spanning tree re-calculate from stack port one?I need to identify with port in the stack is causing the re-calc I have four 48 port switches and show spanning detail only indicates stack port 1.
View 1 Replies View RelatedDoes the 2960 switches with LAN-Lite support DHCP Server Port-Based Address Allocation?
View 1 Replies View RelatedI am looking to simply monitor Port-Security , Error-Disable and HSRP. I would like to receive an email when any of these are triggered.
Port Security - Port Is shut down
Err-Disable - Port goes into err-disable state (securedown)
HSRP - When HSRP standyby changes are detected
I need to receive emails with any of the able are triggered. What is the easiest way to do this? I know SNMP is the main option but I have never worked with SNMP and dont understand it too much.
Equipment:
2x Cisco 1921 series routers
3x Cisco 2960 POE switches stacked
I have an existing stack of 4 x 2960-S switches connected by stack cables.I would like to add another 2960-S switch to the stack but am unable to as the 2960-S will only allow 4 x 2960-S switches per stack.how I would add the 5th 2960-S switch to the existing stack of 4 x 2960-S switches.
View 12 Replies View RelatedI have a 24 port 2960-S that is not communicating with a 2960-LST that it is directly connected to over fiber. The link is up on the LST but will not come up on the -S. What command should I use to bring up this link? I have tried no shut from the (Config-if)# prompt.
View 3 Replies View Relatedlast week we have changed the connection of small town from licensed radio to direct fiber with clasic 1gig sfp.After that we have connected the new fiber , we can see 5 min outages of customer internet connection. If we are conncted on the same subnet anywhere on network, we can ping the customer all the time. But if we try to ping the customers public IP it is each 5 min for 5 min unreachable. I have tryed to sho logg in all switches but there are no mesasages. I just see, when comunication have lost, the MAC and IP of customer will disapear from routers ARP tabbel. What is going on?When i enter sho mac address-table i can see customers MAC address in all switches. There are exactly 5 min outages. 5min it runs ok, 5 min outage and it repeats agan.
I looks like the swith blocks the ARP packets from customers to their default gateway.The routers are connected to catalyst 3560x lan base ios, This switch is connected to another 3560x lan base ios and it is connected with fiber to ME3400 where are customers connected.
We are using the SG300 series switches, and have come across an issue where we need to block ARP broadcasts based on IP.
we have multiple computers, each with only one ethernet adapter, each adapter has two IPs configured, 10.10.10.x and 192.168.0.100.All machines have the same 192.168.0.100 address (Used for applications/hardware running locally to that machine and this IP cannot be changed).
When the machines are connected to the network, ARP is advertising BOTH the 10.10.10.x address and the 192.168.0.100 address.
As all machines have the same 192 address we receive IP conflict notifications on each machine.
How can the ARP broadcasts for the 192 address range be blocked?
We made an IOS doBlades on switch 4507R keep block after an IOS downgradewngrade. Before to do it, the equipment comes with blades 1, 2, 3, 4 and we insert "X4418" and "X4548" on blades 5 and 6.[code]
After we made an IOS downgrade to a cisco 4507R from "cat4500e-ipbasek9-mz.122-54.SG.bin" to "cat4500e-entservicesk9-mz.122-53.SG2.bin" (comes with a redundancy supervisor blade WS-X45-SUP6L-E) the standby supervisor keep disable.We tried with the command "Switch(config)#boot system flash cat4500e-entservicesk9-mz.122-53.SG2.bin" then save configuration and "reload" comand but the switch runs with the "...54.SG.bin" IOS.
We erase the configuration with the command "erase/all non-default", before to apply the reload command insert the "entservicesk9-mz. 122- 53. SG2.bin" using the tftp command.The standby supervisory remains on disable state but the active supervisory runs with the desire IOS. In order to downgrade the IOS to the standby supervisory the active supervisore was removed temporarely (previously the switch was off) to make the standby as active, after that made the same procedure with command "erase/all non-default", "copy tftp://(....122-53.SG2.bin), and "reload" command.
The switch was off and re-insert the active supervisory and turn on the switch, after we made the procedure the blade "WS-X4548-RJ45" marks a fault as follows: [code]
The blades were reset but don't have access to them.
i have several cisco 3500XL switches with trunking. I created a VLAN lets say 20 which purpose is for wireless clients. I installed wireless controller with 4 APs and controllers sees all 4 APs. Controller is also DCHP server. When wireless client authenticates it's DCHP requests in not getting to DHCP server (controller). If i connect all equipment in non managed switch everything works.
View 10 Replies View Related