What Is The By-pass Mechanism Used In Ring Topology
Feb 2, 2012the by-pass mechanism used to isolate the fault if any link fail.
View 3 Repliesthe by-pass mechanism used to isolate the fault if any link fail.
View 3 RepliesI´ve got a strange problem with the connectivity within a ring topology.There are five switches from the SGE2000 series and one SG200-50.The SG200-50 is the root bridge and RSTP is configured.From the root bridge switch (Switch 5) I can ping Switch 0.But I cannot ping Switch 0 from PC0.
On the other hand I am able to ping all other Switches (1-5) from PC0.In addition to that I can establish a RDP connection from PC0 to Server0.This tells me that there is no general problem with the connection from PC0 to the Switch0.
Right now when I want to configure Switch0 the only way is to connect to Server0 first.But we have to move Server0 and this is why I want to manage Switch0 from PC0 like any other Switch on that network.
I have a Cisco 5520 cluster and Cisco Anyconnect Secure Mobility Client 3.0.5080. I eventually want to connact by means of a Smard Card and I was able to connect a view weeks ago. Now I am hastled by the error Logon denied, unauthorized connection mechanism, contact your administrator. Well that's me and a do not know anymore where to look on the Asa. I thought it had something to do with the authentication method, but AAA (AD or Local), nor cetificates is now working.
Cisco's solution...:
Error: "Login Denied , unauthorized connection mechanism , contact your administrator"
AnyConnect clients are failing to connect to a Cisco ASA. The error in the AnyConnect window is "Login Denied , unauthorized connection mechanism , contact your administrator".
I'm planning to use 2 3560X (access switch) on two different locations connected over two 2921 routers in small ring. 3560Xs are directly connected via fiber. Each 3560X is conected to its own 2921, and 2921s are connected together with GRE over IPSec. So they are creating ring.I'm planning to use small area 0 in this scenario. There are less then 200 routes in the network. Will 12.2(55) IP Base on 3560X support this scenario or I will need IP Services image? "OSPF for routed access" is still little vague to me, there are only tipical case study scenarios.
View 22 Replies View RelatedIn the Dual ring network using the token passing method, we have the primary ring and the secondary one where in the normal situation only the primary ring is carrying the token in one direction and when this ring is down the secondary will start into operation and takes the token and rotate in the inverse direction of the primary to reach its destination. Why the secondary ring doesn't continue in the same direction to the destination?
View 10 Replies View RelatedI've looked in many places but cannot see how or if it is possible to configure a phone, in CUCM to have a feature ring instead of the normal ring.In CUCME you go into the ephone x configuration mode, and assign the DN to the phone with the button xfx command. What this gives you is a slightly different ring tone when a call comes through. If I am not mistaken it is the same ringtone they use on the show "24".Is there a way to do this "feature" with CUCM?
View 1 Replies View RelatedMy topology is a physical ring, and I need transfer IPTV signal to all site along the ring.For example:
A (headend)--- B --- C --- D
|______________________|
Note: -----: have spoke-mesh defination
_____: no spoke-mesh defination to prevent loop
So, with MPLS/VPLS I can implement it. With spoke and mesh defination, the traffic can transfer form A to B, C or D as drop-continute action in ring topology (between different VC). Everything is good, FRR can work very fast. But when the topology have a failure link, for example the link between B and C, at that time the traffic will go from A to B then B come back to A and A --- D ---C. This action is so stupid, because it can increase delay, jiiter in network. On the other hand, when the node failure ( B failure), C will loss the IPTV signal, even the link from A--D--C always good.
I'm in a dorm room with an outdated token ring connection that includes phone line ports and cable for my television. In other rooms people are using this to convert their laptop/router to an ethernet portIt converts old token ring ports to ethernet.
View 1 Replies View RelatedMy customer wants to replace some Cisco 2912 by new routers, but I can't find a way to add Token ring Network Module on 2951 or 3925 routers with the Cisco configuration tool.Does token ring is still supported on ISR G2 routers?
View 5 Replies View Relatedhas anyone here played around with uploading compatible audio files for custom rings and MOH and/or personalized backgrounds for the phones? I was only taught the basics in our CUCM v6.0.1 and am looking to figure out how to get some good music on my phone as well as play around with other "cosmetic" features. The phone I'm testing with is a 7971(color).
View 4 Replies View RelatedI need to setup a layer 2 network consisting of 14 switches interconnected in a ring. Obviously, the design of 14 switches in a ring network is dumb, not here to debate that. Unfortunately, it HAS to be a ring. I've been researching the best way to configure RSTP for this. From everything I've read all I really need to do is configure Primary/Secondary root bridge in the center, and change the Maximum Age field to at least 16 seconds? From what I've read you want a minimum of 3 second buffer + 1 second for each hop due to message age being added by each switch hop?
View 8 Replies View RelatedI am looking for a Best Practices or a few places to pay attention to in the Cisco ESW-520-48P switch I have. My VoIP solution is RingCentral, and while they are Cisco phones, I've been hestitant to setup VLANs etc. the way I am used to. Plus setting up Auto QoS seems different than what I am used to with a 3750 switch.
Right now I've left the Smartports Wizard alone, and none of the ports are configured. There are no VLANs or QoS on the LAN currently.
What I was running into were calls cutting out where one side wouldn't hear the other anymore, but the call would remain connected. However, this has happened in this small 15 person office, when there is only one employee here after hours, talking on the phone. There isn't any heavy network traffic, because I have network monitoring showing me low usage (no streaming music, videos, or anything else).
This switch has a Gb connection to a Linksys SR2024 (the server switch), which is also set at Factory Defaults. I mention that because I recently bypassed the ESW-520-48P, and plugged one phone into that switch and the RingCentral phone worked fine for outside calls.
Is there something besides QoS that I should look at in the ESW-520 switch that might be causing a checkpoint of some sort, or interrupting VoIP traffic that I need to configure or disable?
And are there any Best Practices or scenario guides for this switch? I found the Admin Guide, but it really just explains every option in the GUI for the switch. And it seems all of my CCNA training isn't working with going in and quickly troubleshooting this switch besides knowing that something in it could be hanging it up.
Just discovered I can change the focus on a DCS-920 by adjusting the black ring around the lens. It can be focused from very close, just inches, to infinity. I don't see this in any of the DLink documentation.
View 2 Replies View RelatedRunning FWSM Firewall Version 3.1(4)
The problem is that calls originating from the outside of the firewall to the inside will ring but you cannot answer. The internal video conference server is a Polycom HDX 7000. There are ANY/ANY rules to/from this server and the default application inspection policy is set for h323/ras/h225 as follows:
[code]...
Have a potential customer that is looking at the IE2000 series switch and at the Rockwell Allen Bradley switch
Question is does it support Device Level Ring (DLR) capability. I do not see this specifically mentioned in the Data Sheets but it talks about a
Resilient Ethernet Protocol (REP) and I am wondering if this is the same thing?
i create a network topology ( i attached picture) and i don't know what exactly IP addresses should be assigned to routers and switches + there should be five VLAN's created and just one vlan (vlan 2) must see others vlans (for management purposes) and others vlans should not see each other. So i need that: 1) What IP addresses should be on routers and switches 2) How to create a 5 vlans, that they should not see each other, but one should see all, for example where i have to put "tagged" ports where "untagged" or "not member" ports etc.
View 1 Replies View Relatedi create a network topology ( i attached picture) and i don't know what exactly IP addresses should be assigned to routers and switches + there should be five VLAN's created and just one vlan (vlan 2) must see others vlans (for management purposes) and others vlans should not see each other. So i need that: 1) What IP addresses should be on routers and switches 2) How to create a 5 vlans, that they should not see each other, but one should see all, for example where i have to put "tagged" ports where "untagged" or "not member" ports etc.
View 4 Replies View Relatedhow can i connect two offices in the same town.these two offices are separated by two kilometres.each office has ten rooms.how can i provide a secure intranet between the two offices ,what media can be used and hardware to provide a secure intranet via the two offices.
View 2 Replies View Relatedi have an issue with the lms 4.2 Topology Data Collection. After installation the Topology Data Collection was running normaly, but since first server reload the Topo Data Collect under Inventory > Dashboards > Device Status > Collection Summary is "frozen".Is there any option to stop this process elsewhere? I cannot find anything under jobs in running state or so. Clicking on Schedule only give me the option to start data collection, but lms always returns that the process is running.
View 9 Replies View Related1)i have problem in LMS 4.2 , he shows most devices not connected to topology sitting lonly even though the have cdp enable , how to force these to join the topology
2)why some devices are shown unreachable , even though i can ping them from lms server and gets reply, also they have community and cdp configured
On a LMS 4.0.1 :I want to know what is the right way to change the telnet program on the campus mgr map (topology services map), when right-clicking a device icon and selecting telnet.I would like to use a tool of mine, and not to launch a telnet command from the IE browser.I changed the default telnet of Windows in the registry, but the program is still launched as a telnet URL in the browser and this is not what I would like to do.
View 2 Replies View RelatedThe regular problem with the LMS topology and WAN Links when you see the branches are disconnected from the HQ BUT in my case the branches are already connected via Layer2 links but unfortunately some intermediate layer2 modem/switch exist in some branches which prevent CDP discovery but you will find both HQ and branch router in the same subnet .
View 1 Replies View Relatedi have only 1 switch 2960 POE at customer enviroment.i did run topology service and checked on the right side POE CAPABLE Devices
it shows me that i have 4 switch POE while actually there is only 1 switch POE in real enviroment.
have ether-channel across 2 switches?i am new in cisco LMS . now i am in client site installing cisco LMS 4.1 in UCS server-rack version. we did it well for the installation, and the LMS working properly until i cannot open topology service.
i attached the error message
I have a customer who wants to disable cdp on all switches for securtity reasons. The same customer has also LMS 4.0 installed.
When disabling cdp, does it affect the topology services on LMS? Can you still see the topology tab on device manager or the topology map of the entire network?
I config the routers with EIGRP and also write Static route between two PC before remove the link between router0 and router1 , destination is reachable , but when remove this connection , packet from pc1 to pc0 will drop in a loop and never reach to destination , is it possible to have a Link state routing protocol and static route at the same network like this scenario , how to prevent loop in this topology static route is configure as bellow :
router0 <==> router 1 <==> router2 <==> router3 <==> router <==>pc1
I have problem with topology view in LMS 4.2.1, it doesn't show the tunnels connecting branches, though both devices are shown in sh cdp neighbour command output. If I choose Show Devices in Admin > Collection Settings > Data Collection, it is showing cdp neighbours correctly.
View 4 Replies View RelatedI am running LMS 4.2 , using that i am monitering some switches . I am using topology services also. In that i am getting veiw of all connected devices with links. But bandwidth utilization is for those links are not showning in topology veiw .
Is there any settings to be done in LMS 4.2.2 or any configuration changes to done on my switches ? to find the traffic flow bandwidth utilization.
I installed LMS 4.0.1 and every module works from the local server. Http login from a remote system, topology services does not start, complains about java version. I followed the link to install the java version, it then complains about some Ansiserver stuff.
the client os is win7 64 bits, eplorer version is 7.
i have a problem that i see the devices by ip not hostname in devices report and topology and i checked in device discovery to appear by hostname
View 2 Replies View RelatedWhen i try to launch topology services in LMS 4.0 i get prompted to install a java plugin. When i install this it tells me to restart the browser but nothing is changed, it asks me if i want to install the java plugin again.
View 7 Replies View RelatedI'm trying to make an attached topology. This router should be attached to 2 different ISPs on both WAN interfaces (ISP1 with IP address - A.B.C.D, and ISP2 with IP W.X.Y.Z) and I want to use DMZ, too. My idea is to make a L2/L3 segmentation with 2 VLANs - Vlan RED for DMZ (private network 192.168.1.0/24) and vlan BLUE for Internal network (network 192.168.2.0/24). I checked in the manual that vlans are supported, but I can't see anything about 802.1q, can I use one trunk port or I should use 2 physical cables?
There should be inter-vlan routing and basic stateful firewall, so PCs in Vlan Blue should be able to initiate connections to DMZ servers, but the opposite should be denied. Router should make a port forwarding on its both WAN interfaces and forward incomming traffic (from Internet) to DMZ servers (with NAT). Both DMZ servers and internal PCs should have an internet access with NAT over both WAN uplinks.
Can I use RV042G for this setup and if not at all - are there any cisco SMB device which can do this?
I work with the topology view in LMS 4.1. I can see all the links between the differrent switches (N7K, 3750, 3040).I miss only the links between the different N7K's. This links have one special thinks: they are configured as " rate-mode dedicated force" In the N7K cli this interfaces are displayed with the SN too.
sw-bb13# show cdp ne.The links to sw-bb11 and sw-bb21 are not painted in the topoloyview.