Cisco Switching/Routing :: Switches Listening On 1975 And 2228 / UDP?
Mar 11, 2007How come many switches show that they are listening on port 2228/udp and 1975/udp? You can see this by running 'show ip sockets'.
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Cisco Switching/Routing :: UDP Port 10000 And IPv6 Ports Listening
Aug 30, 2012I've several production Catalyst switches that are listening on the same IPv4 and IPv6 ports. The problem is I don't want the switches listening on the IPv6 ports.[code] How to shut down these listening ports?I also have a few production switches listening on UDP/10000 and I cannot determine why this port is listening. [code] I've seen where UDP/10000 is Network Data Management Protocol and is related to Storage networks ###, but I've also seen where UDP/10000 is the default port for IPSEC data.I don't believe UDP/10000 is related to either NDMP or IPSEC data, though I could be very wrong.
View 4 Replies View RelatedCisco Switching/Routing :: SG300-10 See All Traffic From All Connected Devices On Any Port / Where To Connect Listening Device
Dec 20, 2012In my LAN environment, I'm using two cisco SG300-10 switches. Both switches are connected by GE10 on both switches, where both ports are set to trunk.Now on all ports 1-9 on both switches, I'm having client computers attached. So I set ports 1-9 to "access" mode.All interfaces on any switch is left in default vlan.
Is it normal that I see all traffic from all connected devices on any port where I connect a listening device?What I'd like to achieve is, that only traffic that is meant for a specific workstation is actually forwarded to this workstation. By now it seems that I get all the traffic from everybody.
Cisco Switching/Routing :: 3750 Stackable Switches Etherchannel To Core Switches
Nov 18, 2011If I have two stackable switches one switch uplinks to one 6509 core switch and the other connection uplinks to another 6509 core switch, and also the other stackable switch does not connect to the core switches. Because I am using hsrp and also we are not using vss then one uplink to the core is not in used only ones is so then how does creating an etherchannel between does two uplinks to both core switches benefit me in anyway such as more bandwith and using both uplinks at the same time or I'm I wrong?
View 7 Replies View RelatedCisco Switching/Routing :: 3750 Stackable Switches And 6509 Core Switches
Nov 14, 2011If I have two stackable switches were only one stackable switch has two uplinks one uplink goes to one core 6509 switch and the other uplink goes to the other 6509 core switch can a Layer 3 etherchannel be used if each uplink go to a different core switch, by the way hsrp is running between both switches and also can you give an example how data will be routed from the stackable switch through the ethernetchannel to one of the core switch accross the WAN to another core switch?
View 1 Replies View RelatedCisco :: STP Blocking And Listening Modes
Oct 8, 2012Sometimes when I enable a switchport I see the port goes to Blocking mode first, not sure if it stays in that mode for the 20 secs, I think sometimes is far less than 20 sec. But I have seen too, that when I enable a port it goes directly to Listening mode. When does a switchport goes to the Blocking mode first, mode that all the books I have read say it should go when you enable a port, and when it goes to Listening mode directly?
View 5 Replies View RelatedD-Link DIR-655 :: Is PORT 111 Really Listening
Aug 16, 2011I recently had a security scan done on a DIR 655 and the report came back saying PORT 111 (Unix RPC Service) should not be listening for external connections. I've looked through every setting but can't find where this service is enabled (or can be altered) -- aany guidance on this port/service?
View 14 Replies View RelatedCisco WAN :: Router Listening On Public Interface Rv042
Aug 28, 2011I have two Windows Boxes connected to RV042 ; each has its own static IP assigned to it and each runs bunch of virtual machines , for which I had configured port forwarding .My hosting company claims that my server(s) are listening on IP 192.168.0.1 on a public interface (i.e., one that uplinks to their network). They see this same IP on two different MACs my uplink interface. I am not really sure how it is possible since 192.168.0.1 was assigned to router itself.
View 7 Replies View RelatedCisco Firewall :: ASA 5505 Appears To Be Listening On All TCP Ports?
Aug 7, 2011When I do an NMAP scan against my ASA 5505 on it's internal interface's IP address, it appears to be listening on all TCP ports. If I do it from across a VPN tunnel, the ports show as open according to NMAP, if I do the scan from the local subnet they show up as unknown. I'm running 8.0.4 code on this ASA.
View 1 Replies View RelatedD-Link DIR-615 :: HTTP Listening On Port 65535
Aug 4, 2011I am just setting up a LAN using DIR-655 and I noticed this line in the logs: notice Aug 4 03:25:55 HTTP listening on port 65535
Is the router listening to that port?
Cisco :: Spanning-tree Every Port Go Into Listening / Learning State
Apr 4, 2012Ages ago I was shadowing someone making a change on the network. I cannot remember which spanning tree version was running and cannot remember the config of any port either. What I do remember is that every switch port on the 2960 switch went orange and an outage occured, where the ports went into listening / learning mode. I assume that the STP was just the default ieee 802.1D.
View 3 Replies View RelatedCisco Routers :: RV220W Default Listening Port For Management
Aug 13, 2011recently got a RV220W and liking all the configuration options.
Although I cannot find where to change the listening port for management? I want it to listen on port 81 instead of 80.
Cisco Switching/Routing :: Pair Of N7K Distribution Switches Connected To A Pair Of Aggregation Switches
Mar 11, 2012We have a pair of N7K distribution switches connected to a pair of N7K Aggregation switches.We run vPC on both pairs of n7k's.
-n7k-d1 has two interfaces in a Port-Channel connecting to n7k-a1 & n7k-a2. (PC1)
-n7k-d2 also has two interfaces in a Port-Channel connecting to n7k-a1 & n7k-a2. (PC2)
My problem is that Spanning-Tree is blocking PC2 and all traffic from n7k-d2 is traversing the Peer-Link before reaching the Aggregation layer. Is this the best design for connecting two pairs of n7k's with vPC or if a better design would be to connect all 4 links into the same Port-Channel and vPC?
Cisco Switching/Routing :: 2906 So Much Switching Capacity In Switches
Sep 13, 2012Why Cisco implements so much switching capacity in their switches Obviously,16 Gbps of permutation performance is too much for the 8,8 Gbits (24*200+2*2000) needed by ports so why they put so many bandwidth?
View 3 Replies View RelatedCisco Switching/Routing :: Configuring Intervlan Routing Between 2801 And HP Switches?
Aug 5, 2012I'm trying to configure intervlan routing between a cisco 2801 router and HP/Amer switches. Using int fa0/1 and subinterfaces I was sure I had it configured correctly, but I cannot ping the default gateways when I place a host in a particular vlan. Below is what I have configured.
HP switch - port 9 connects to fa0/1 on 2801
ip default-gateway 10.1.100.1
trunk 9 Trk1 trunk
trunk 10 Trk2 trunk - to another switch
[code].....
Cisco Switching/Routing :: InterVlan Routing With 3750 And 2960 Switches?
Nov 21, 2012I am using a 3750 as a default gateway for multiple Vlans on a few 2960 switches. The trunk lines are configured and working and I have assigned ip addresses to each of the Vlan interfaces on the 3750. My issue is that I can only ping the ip address on the Vlan interface of the 3750 if I have a working computer plugged directly into the Vlan on the 3750. I only have 3 vlans on the 3750 that have hosts directly connected (vlans 2, 10 and 40) the other vlans ( 20 and 70) don't have any clients plugged into them on the 3750 but the hosts reside on 2 different 2960s that connect via trunk ports. How do I keep the vlan interface on the 3750 switch pingable when I don't have hosts directly connected in that vlan on the 3750? (yes, I have enabled ip routing on the 3750)
View 5 Replies View RelatedCisco Switching/Routing :: Policy Based Routing With 3750 Switches
Oct 17, 2011I have a simple design with 3750. I configured a route-map which define a next hop. I defined this route-map on a policy on a vlan interface.When I test some ping and a debug ip policy and it seems that my policy never match.Is there any mechanism that prevent the switch from using PBR? I think of CEF .
View 5 Replies View RelatedCisco Switching/Routing :: Policy Based Routing And 3750 Switches?
Sep 5, 2012I have a simple design with 3750.I configured a route-map which define a next hop.I defined this route-map on a policy on a vlan interface.When I test some ping and a debug ip policy and it seems that my policy never match.Is there any mechanism that prevent the switch from using PBR?
View 10 Replies View RelatedCisco Switching/Routing :: 3550 - IP Routing In L3 Capable Switches?
Apr 11, 2012Is L3 ip routing on by default in 3550s? If so is the "ip routing" command visible in the config file? If no - I assume that one would enable L3 routing with that config command.In general terms are there any IOS devices where ip routing is enabled and one would not see the "ip routing" command in config. I.E. if that command is not visible in the config could you assume there is no L3 capablity in that device?
View 1 Replies View RelatedCisco Switching/Routing :: 4506 Connecting Switches Together With IP Routing
Aug 31, 2012CiscoSwitch1(4506) has 3 VLANs(12,13,14) and Switch2(4948) has 3 different VLANs(22,23,24) and IP routing has been enabled in both switches with SVI interfaces for each vlan. intervlan routing is works fine.Now there is a requirement to connect these switches together. Vlan 12 on the Cisco switch 4506 has to be made available from vlan 22 from Switch2(4948). basically Vlan 12 is having a multicast source (225.0.0.0 & 226.0.0.0) which should be accessabile from vlan 22 of cisco switch 4948.I got 2 ideas
1) Create a trunk between these switches and configure L2 vlan(12) in cisco 4948...i know theoritically it should work but what my concern is Ip routing enabled in both switches will it create any issues? is it a gud solution to this requirement?
2) Create a separate IP network on the ports connecting to both switches and set up routes to the networks.ex- console(config)#ip route 192.168.10.10 255.255.255.0 192.168.20.1.
Cisco Switching/Routing :: L3 Routing On 3750 Switches?
Jan 21, 2013I have a small campus network using 3750 stackable switches and a 3725 router (see diagram below). Currently the 3725 router is handling inter-vlan routing for the campus and it looks like it's not able to handle the amount of traffic we're pushing. The router CPU sometimes hits above 90% due traffic load. What I would like to accomplish is move L3 process over to the 3750 MDF stack and the IDF1 stack. I am thinking creating SVI's on both MDF stack and IDF1 stack, run HSRP between the two stacks and may be do load balance traffic between the two stack as well.
View 8 Replies View RelatedCisco Switching/Routing :: MGMT0 Connecting Across Switches
Jun 18, 2012I have two C2960 switches which have the management VLAN for other switches. These two switches are connected with each other via portchannel. Now the mgmt0 of few switches is connected to switch 1 and few other connect to switch 2.I have also connected the mgmt0 of switch 1 to an access port of switch 2 and vice versa.However in this set-up I am unable to reach switch1 via the mgmt0 IP address. However I can reach the mgmt0 Ip address of switch 2.I can also reach switch 1 and 2 via their int vlan IP.Has some one else experienced this and is their any specific reason why mgmt 0 IP address of switch 1 is not reachable.I have tried doing similar set-up on C3750, but have acheived same result i.e. I am unable to reach mgmt0 of switch 1.
View 4 Replies View RelatedCisco Switching/Routing :: High CPU On C500 Switches
Nov 30, 2011We are seeing the cpu on 2 of our C500 switches running at 99% with the following process causing the issue,.
View 1 Replies View RelatedCisco Switching/Routing :: 2950 / NIC Teaming On Two Switches?
Apr 25, 2013I have a server windows 2008 that I would like to have a nic teaming configuration, the server has two nics, each nic is connected to a different switch. One is connected to cisco 2960 and the other is connected to cisco 2950. I have read here in forums about nic teaming but using the same switch. I have not found using different switch. Is this possible?
View 1 Replies View RelatedCisco Switching/Routing :: To Stack 2 Switches 3550
May 15, 2013I would like to know how to stack 2 switch cisco 3550 that IOS C3550-ipservicesk9-mz.122-44.SE6
View 3 Replies View RelatedCisco Switching/Routing :: QoS In L2 Switches 2960 And 4500?
Mar 12, 2013We have 3 layer LAN architecture, layer 1 of 6500(IP routing), layer 2 of 4500(L2 switch only), layer 3 of 2960(L2 Switch)In a Single (2960 and 4500) Switch Port Avaya IP phone and PC are connected.Now, the requirement is that, Qos need to be configured for Voice traffic and Data traffic should be in default class of service.We plan to use COS value in Switch 4500 and 2960. We made a sample configuration as below
### For 4500 Switch
class-map match-all VOIP-Access-2MB
match cos 3 5
class-map match-all VOIP-Uplink-20MB
match cos 3 5
[code].....
check these configurations are correct as per standard and if there is any other method of configuration?What need to be configured in L3 Switch(6500)??In 2960, it doesn't support ingress QoS, what impact it will make when compare to 4500? do users experiance any difference?
Cisco Switching/Routing :: 3550 TCL Interpreter In Switches
Jun 11, 2008I have one 3550 switch and i upgraded from 12.1 to 12.2(44)SE . But "tclsh" command is not enabled on this version. As per Cisco, 12.2(25)S is enough to enable TCL interpreter.
View 5 Replies View RelatedCisco Switching/Routing :: 6509 Switches Which Are Running In VSS
Feb 15, 2011I've upgraded a 6509 switches wich are running in VSS, from IOS 12.2 (33)SHI1 to 12.2 (33)SHI5. After that I'm facing the folowing log messages periodically. [code] I know that this is a diagnostic result from TestUnusedPortLoopback feature. But this interface is disabled (shutdown).
View 5 Replies View RelatedCisco Switching/Routing :: HSRP Between Three 6509 Switches?
Jan 8, 2012I want to setup HSRP between three 6509 switches with a single virtual ip for all the three switches.
know if its possible and share any site or config.
Cisco Switching/Routing :: 4510 PoE Switches Keep Failing
Jun 11, 2013We have an issue where switches are failing weekly in a switch closet. In the past month we have gone through several 3750G switches and a couple 4510s. The power supplies have eventually made a popping noise and had to be replaced. on the 4510s we've tried two chassis and gone through several power supplies.The switches have been behind UPS systems so should be receiving conditioned power.Could load from the PoE devices really be causing this? I wouldn't think it's power since they are behind a UPS.
View 5 Replies View RelatedCisco Switching/Routing :: Portchannel Between 3750 Switches
Feb 20, 2013Switch A connects to Swich B and C using port channel. I am going to bring down one link on each.
switch A is server farm , switch B and C are core 01 and 02 . and all are 3750 switches.
1. what will be the impact on the network in terms of spanning tree recalculation
2. what duration are we talking about until the spanning tree convergence happens?
3.I plan to shut down the link from CLI to bring down the links
Cisco Switching/Routing :: Cannot Login To 6500 Switches
Dec 16, 2012We have two 6500 switches and I am unable to login to these switches anymore, but i was able to connect to them yesterday via Telnet. The strange part is that it happened for both switches at the same time.But now when i try to login, it gives me a message "password required, but none set". I can login to them via console.Is it because the 0 - 4 VTY connection are being used and there is no password set from VTY 5 to 15?The config has not changed.
SWITCH-1
line con 0
exec-timeout 0 0
password xxxxx
login
line vty 0 4
[code]....
Cisco Switching/Routing :: 7000 Switches In VPC Configuration
Jan 28, 2013I have a pair of Cisco Nexus 7000 switches in a VPC configuration with several Nexus 5000 switches attached. The config has about 50 or so VLANs each with a /24 subnet address assigned. These SVIs include HSRP etc and are all a member of the same VRF. Unfortunatelu I am not able to advise/confirm if the issue is on the last vlans and svis configured as I am not aware of the history/chronology of the configurations applied.
The issue I have is that one of the Nexus 7000s seems to take some time providing output or even freezing until I issue a Ctrl+C when issuing simple commands such as "show ip arp vlan 123 vrf abc123" or "show mac address-table dynamic vlan 1234". This seems to affect only some but not all vlans or all SVIs in the VRF. This behaviour is the same whether accessing the cli via a console, SSH and/or telnet session.A check of CPU and mem reveals little utilisation to cause any concern and will begin a bug toolkit hunt for version 6.01.