Cisco Switching/Routing :: 4503 / 3560X - Core And Access Switches In IPTV Network Infrastructure?

Jul 8, 2012

recommend a cisco core switch and access switches in IPTV network infrastructure?I was ask to implement a network for IPTV system but i don't have idea what will be the model i will use.
 
Core Switch = Cisco 4503
Access Switches = Cisco 3560X

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Cisco Switching/Routing :: Very High CPU Utilization Core Switch 4503?

Feb 14, 2012

We  had a core switch(30 vlans) in our environment and it's noticed that  CPU utilization of the core switch is showing high during recent days. I  have checked logs and processes, but couldn't find the root cause. The  issue found only in the office hourly only(after that the cpu  utilization is idle and normal). I have already referred the following  link to troubleshoot the issue " [URL]
 
see the following outputs from the core switch
 
CPU utilization for five seconds: 99%/0%; one minute: 99%; five minutes: 99%
PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
  30   6687557041432420936        466 47.52% 47.10% 45.98%   0 Cat4k Mgmt LoPri
  55  30667074884269560256          0 45.36% 45.50% 45.85%   0 IP Input
  29  28552856922870089254          0  3.59%  3.50%  3.57%   0 Cat4k Mgmt HiPri

[code]....
 
Note: Each Invalid source mac entry in each day from same port (above is the output after clearing logs before 3 days)
  
My queries regarding the issues are following
 
1) How can we find root cause regarding the high cpu utilization?

2) Is a single invalid mac address makes the cpu highly utilized for suppressing it?

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Cisco Switching/Routing :: WS-4503 - Core Switch Having High CPU Load

Jan 13, 2012

We have two core switches in our network (Cisco WS-4503). HSRP is working as Active-Standby mode. Recently it has been found that core 1 (which is in active mode) shown high CPU load (60% - 100%). Also found that the below mentioned process takes more CPU. Our network consist of around 30 Vlans. We have already checked for the solution in Cisco website [URL]  but couldn't find exact reason. see the below outputs for core 1 switch.
 
Core1# sh processes cpu sorted
CPU utilization for five seconds: 55%/3%; one minute: 65%; five minutes: 71%PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process  30   1606933521086983644        147 24.79% 29.93% 35.85%   0 Cat4k Mgmt LoPri  29 

[Code]....

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Cisco Switching/Routing :: Not Logging All Levels Of Sylog Messages From Core Switch 4503

Apr 23, 2012

We had a core switch(4503) in our environment and recently we tried to enable syslog in the switch. But the syslog server doesnt receives all the configured level messages from the switch. Following is the only message getting in syslog server after the configuration change in switch.
 
%SYS-5-CONFIG_I: Configured from console by CWLMS onvty1
 
(No Traffic related messages like acl deny traffic, spanning tree events etc are getting to syslog server as well as log buffer of the switch)
 
Following are the logging configuration for the core switch
 
logging monitor informational
logging facility syslog
logging source-interface Vlan44

[Code]....

1) Is there any more configurations required for getting all traffic related messages, (i mean all possible messages - upto level 7 - debugging)?

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Cisco Switching/Routing :: 3560x Or 3750x For Core Switching?

Mar 6, 2013

i cant find any difference in these two devices when i am trying to compare throughput.I need upgrade our new POP and there will be around 4900 MAC adresses in VLAN 150 and 130 MAC adresses in vlan 200.Uplink is 1 gig routed internet connection and there is 14 downlinks to separate villages.i found a few differences for eg stack interface on 3750x but i dont need it.  

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Cisco Switching/Routing :: 3560x - Lan Base 4900M Can Take Load Of 18 Access Switches

Feb 6, 2012

We are using 18 numbers of 3560X -Lan base series switches in our network(Access layer). We have 400 users and created vlans in access  switches. we are planning to purchase Two numbers of 4900 M as Core layer switch and for redundancy. The uplink would be on 10 gig copper cable (CAT 7) between the access layer switches and core switches. I like to know whether 4900M can take the load of 18 access switches.

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Cisco Switching/Routing :: 3750G - Multiple Trunks From Core To Access Switches Without Loop

Feb 5, 2013

We have a Cisco 3750G Core switch which has physical connections, each configured as trunks to two HP Access switches. The client who uses these access switches would like to put a link between the two, but this would create a loop.
  
------- Core Switch -------
|                                          |
|                                |

[Code]....

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Cisco Switching/Routing :: Configure 3750 Stack As Core / 2960 As Access Layer Switches

Sep 29, 2012

I configure 3750 stack switch as core and 2960 stack switches as access layer switches.I connected my laptop to one of my core stack in VLAN 10 and I am pinging to one of my server in VLAN 1. What will be the minimum latency at the time of inter VALN routing

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Cisco Infrastructure :: 3560x Switches Died After Working Normally

Dec 5, 2012

We just got many 3560x switches for a project. Curiously and in a very rate event (at least for me ) 4 of them died after workijg normally. 3 for some days and the last one for 3 weeks.Power supplies are ok and light up, they work on other switches, fans dont start kn the damagdd switch but work in ither switches.Syslog server doesnt show anything. It just goes puff. They are brand new switches biught one month ago from official channek distributor.

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Cisco Switching/Routing :: 3750 Stackable Switches Etherchannel To Core Switches

Nov 18, 2011

If 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?

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Cisco Switching/Routing :: 3750 Stackable Switches And 6509 Core Switches

Nov 14, 2011

If 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?

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Cisco Switching/Routing :: Do 3560X Switches Include StackWise Cables

Nov 18, 2011

When purchasing part number WS-C3560X-48P-L is a StackWise cable included or do I need to purchase that separately?

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Cisco Switching/Routing :: Cat6500 / IPTV Multicast Network Devices High CPU Utilization?

Jan 30, 2013

i have a campus network with 2 core Cat6500 and multiple 4500 series distribution switches plus 2960 series access switches,we have deployed IPTV system in the network but currently 50 TVs are working through sattelite stream from streaming server Cisco's DCM 9900.we are planning to add more  300 TVs in the network and i am wondering that when all of them will be deployed then what will happen for switches cpu utilizations when all the Tvs will be running on the same time with different different channels.

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Cisco Switching/Routing :: 4503 -MAC Access-list Extended To Only Allow Gateway Traffic

Nov 7, 2011

We have a gateway on a 4503, say on port 2/1, and we only want the other devices that are plugged into the 4503 to be able to talk to the gateway and thats it.  The other devices are Motorola TUT DSL devices and they plug into the 4503 directly.
 
Normally "switchport protected" would make this very easy to keep stuff on one port from talking to other ports but with 4500's you are not able to do that command.  So we implemented a MAC Access-List Extended ACL.  Here is what we did
 
mac access-list extended BLAH
permit #host 0000.XXXX.YYYY any
interface range fa 2/5 - 20
mac access-group BLAH out 
 
The MAC address 0000.XXXX.YYYY is the MAC address of the gateway that is plugged into Fa2/1 and the DSL TUT devices are plugged into ports Fa2/5-20.  We would think that this config would only allow devices on the TUT DSL to talk only to the Gateway but we don't really think this is happening.  The TUT devices are learning about MAC addresses that are on other TUT devices. 

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Cisco Switching/Routing :: Key Functional Differences Between Catalyst Switches 3560E / 3560X And 3560G

Dec 1, 2011

I need to know the key functional differences between the Catalyst switches 3560E, 3560X and 3560G.

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Cisco Switching/Routing :: Using 6509 Series As Core Switches

Jun 2, 2012

we are using cisco 6509 series switches as core switches. and Cisco 4510,4507 series switches as edge switches. all the vlans are created at core switches and propogating to edge switches through VTP. we are using OSPF as routing protocol at core switch for internal routing. till now we are using 4510,4507 switches as layer 2 switches. Since, 4510 & 4507 switches are hign end swithces i want use them as layer 3 switches instead of layer 2.if i change these switches from layer 2 to layer 3 does it make any impact on our network or better to keep them as layer 2 switches.if i change these switches to layer 3 is there any advantage i will have.

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Cisco Switching/Routing :: Adding UCS 6248UP To 6509 Core Switches?

Apr 21, 2013

In the next couple weekends I'm planning to add 2 CISCO UCS 6248UP Interconnects to 6509 Core Switches via 10G links.
 
Is there any impact anticipated?  It's a production environment and no loss of up-time is acceptable.

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Cisco Switching/Routing :: Inter-connecting 3 Core 6509s Switches

Jan 19, 2012

I currently have 3 core switches on my campus.  They are 6509 catalyst switches.  They currently are not interconnected to each other.I want to interconnect them to each other.  The IP addresses of each core sit on a interface Loopback500. [code] How can I interconnect each core to each other and what IP scheme could I use.  I want them to be straight L3 to each other.

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Cisco Switching/Routing :: High CPU Utilization In 6513 Core Switches

Apr 8, 2012

we have two 6513 core switches redundant to each other by using HSRP and MST. Currently we have a problem in a CPU as it's high in both cores as appeared in the following logging message:
 
1: 04/09/12 16:06:20    7/-1: MAJ, GOLD,
test_sp_rp_inband_ping[7]: diag_hit_sp_sys_limit. SP-RP Ping Test skipped. Reason(s): netint_thr_active[1].

[Code].....

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Cisco Switching/Routing :: Access Layer Switching With 2960 / 3560x / 3750x And 4506

Jan 17, 2013

My management has tasked me to give them a high level overview of the different switching we can choose for our new building.
 
This is what I know so far.4 Closets, each closet has 450 ports,One MDF room that is will contain one UCS Chassis and a Nimble iSCSI SAN.
 
I am working on the spreadsheet and it looks like this (Not totally filled):

2960s3560x3750x45064510Approx cost (Each, 48PORT, POE+, 10G uplink, Dual PS, IP BASE)
6K7K8K45K75KMax Capacity192432432192384Backplane speed206464520520ProLeast ExpensiveStackable to 9Stackable to 9ProDual PSDual PSDual PSDual PSDual PSProLayer 3 opt
Layer 3 optDual SupsDual SupsConExpensiveExpensiveConNo Dual PSConLayer 2 OnlyCannot stack more than 4 
For the MDF I would like to use 2 Nexus 5548's with FEX's, and the layer 3 daughter board.  For the IDF's I was thinking of two 4010's.

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Cisco Switching/Routing :: 6500 / Connect A Juniper SRX Firewall To Core Switches?

Mar 17, 2013

Assume that we have 2 Cisco 6500 series which redundant via GLP, now my question is how can we connect a Juniper SRX firewall to our core switches?

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Cisco Switching/Routing :: Connecting 5548 Pair To 2 6509 Core Switches / No Vss

Jun 8, 2012

connecting a 5548 pair to our core 6509s.  Just want to be sure we don't introduce any issues into the network.The 6509's are connected and perform all the routing.  Essentially, we're moving away from a 3750 stack in the data center and the 5548s are the replacement.  We'd want to limit the vlans to the specific server network vlans. Our current setup is a port channel between the 3750 and each of the 2 6509s for redundancy. I'd like to use the same functionality when we connect the 5548's but I'm looking for what the config should look like to ensure no spanning tree loops are introduced and that it is configured optimally.

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Cisco WAN :: Windows 7 Cannot Obtain An IP Address From 4503 Core Switch

Dec 14, 2011

we have Core-Siwtch 4503 in the main building which is connected to another Core 4503-E in another building ,, now our PCs connected to the 4503-E ,,, any XP M/C can  pick an Dhcp-ip but and M/C run Win.7 Cannot !!

action taken :
 
1st we try to connect our win 7 pc in the node which was connected to xp M/C ,, and it didnot take ip from the DHCP . ,, 2
 
2nd we ensure from the core-switch configuration and its normal with no mistake
 
3rd trying to use tool from Microsoft Fix-it Center whih name is ( Microsoftfixit 50475 ) which is just .msi file but the problem face us is that this tool donnot accept to run on win 7 cause its made for vista .
 
4th after some researchs we notic that there is some modifications have to be performed on registery by disabling the dhcp broadcast flag we did it but nothing change yet
 
5th now we are waiting to perform another action which is Disable the IP Helper service in win 7

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Cisco Switching/Routing :: Cannot Access Property Web Interface On 3560X

Jun 9, 2013

I configured a Switch Cisco 3560X with a basic configuraction, My problem is that when I access Web interface by http://X.X.X.X an login after the image that I attached.I tried restore the default configuration, also tried with different navigator, chrome, Internet explorer, fireffox, safari, change laptop... and update the java client.

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Cisco Switching/Routing :: View Capacity Throughput (backplane) Of Core Switches (6509)?

May 30, 2012

How i can view the capacity throughput (backplane) of core switches (6509)? How i know much is in use?

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Cisco Switching/Routing :: 3750 / 4507 - Upgrading Core Switches With Nexus 7010

Feb 8, 2012

The company I work have finally decided to enter the 21st century and invest in a new telephone system (Interactive Intelligence) to replace the legacy system which has served us well for the past 10 years. The project has only just started and involves upgrading sections of CAT3 cabling to CAT6, replacing Cisco 3550 switches in one area of the building with Cisco 4507 switches and upgrading our Core switches with Cisco Nexus 7010's. The area that concerns me most is enabling the network for qos as I have very little experience with it. At the moment Im trying to read as much documentation as I can on QOS to bring myself up to speed.
 
The access layer switches will consist of a mixture of Cisco 3750 & 4507 switches connected to Cisco Nexus 7010 switches which will form a collapsed aggregation & core layer.
 
Basically, how I should approach this daunting task of making sure the network will support VOIP.

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Cisco Infrastructure :: 3750 - Routing At Core Versus Edge?

Mar 29, 2011

I have a very basic networking question If I have, say, 3750's (or any L3 switch, capable of routing) at the edge and a 4500 at the core, where should I route? At the edge? At the Core? Both?

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Cisco Switching/Routing :: Output Queue Drops On 3750 Core Stack And 3560 Edge Switches

Jan 10, 2013

I've been fighting what seems to be an increased number of outqueue drops on our core stack and edge switches for the last 3 or 4 weeks.(The core consists of a stack of 5 3750s in 32-gig stack mode. The wkgrp switches are 3560s. all are at 12.2.52) The  wkgrp switches are directly connected to users. We use Nortel IP phones with the phone inline with the user PC. auto-neg to 100/full. [code] However I have tried turning off QOS on a couple of workgroup switches (no mls qos, but left individual port configurations the same) but am still seeing drops.Since I have disabled qos on the switches in question (no mls qos)  (not the core tho) I am presuming these commands have no affect on the switch operation and therefore cannot be related to the problem. With QOS turned off one would presume that it is general congestion - especially at the user edge where busy PC issues might contribute. So I wanted to see if I could see any instances of packets in the output queues building up.
 
 I wrote some scripts and macros that essentially did a snapshot of 'show int' every 20 seconds or so, and looked for instances of 'Queue: x/' where x was greater than zero.What I found after several days of watching the core stack, and a few of the workgroup switches that are most often displaying the behavior, was that I NEVER saw ANY packets in output queues. I often saw packets in Input queues for VLAN1, once in a great while I would see packets on input queues for fa or Gi interfaces, but NEVER on output queues. [ code] Additionally, when I look (via snmp) at interface utilization on interfaces showing queue drops (both core and wkgroup), they are occurring at ridiculously low utilization levels (as low as 4 to 8%). I've tried to look for microbursts between the core and a wkgroup switch where the core interface was experiencing drops, but haven't seen any (using observer suite). [code] While the queue-drop counts aren't critically high at this point, they are happening more frequently than in the past and I would like to understand what is going on... In most cases, no error counters are incrementing for these interfaces. Is there some mechanism besides congestion that could cause output queue drops?

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Cisco Switching/Routing :: C3750X-24S-E As Core In A L2 Network

Nov 24, 2011

I want to deploy the C3750X 24-port SFP switch as the core switch in a large Layer 2 switching domain.The switch will need to run:
 
+/- only 10 large VLANs, 6 VLANs with HSRP
+/- 500 MACs total
+/- 5 OSPF sessions default timers

standard PVST+ (no Rapid PVST+)i need around 27 SFP ports (24 + 4 on network module=28=ok, extra capacity by stacking)
 
Looking at the switching capacity of the specs (160 Gbps) this is much better than a C6500 with SUP32-GE !Will it be able to handle this or should i look for C6500+SUP32GE or C6500-SUP720 or maybe even C4500 ?

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Cisco Infrastructure :: 4503 - Connection To 3COM 4900 At Physical Layer

Oct 2, 2003

I have at the core a CISCO 4503 and need to connect various 3COM 3300/4400/4900 access switches thru fiber. The problem is that the Cisco core 4503 switch fails to recognize only the 4900 3com switches ie the link status shows down. The fiber multitude link is tested and OK.The modules on both the switches ie 1000baseSX are also tested and ok.

The Cisco switch has a 6port gb ic with 1000baseSX moules and the 3COM 4900 has a 4-port 1000baseSX module.

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Cisco Switching/Routing :: 3750 / 6509 - Upgrade Core Switch Without Disrupting Network?

Feb 2, 2013

I am planning to upgrade the current core switch(3750) to 6509 series switch. Since we have a production network running we have to plan for an online core switch upgrade.

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Cisco Switching/Routing :: 2960S - IPTV VLAN In Trunk QOS

Sep 22, 2012

I need to set QOS in our new network. We have connected 2 cities together with 700Mbit leased line. On each side we have Catalyst 2960S switches and between them is TRUNK for VLAN 10 and Vlan 20.Vlan 10 is for IPTV (fixed 400 Mb/s for CATV)Vlan 20 is for Internet (rest).Sometimes is happening that Vlan 20 takes more than 400 Mb/s for a few seconds and in this situation we have problems with CATV.Is there any way to make a guaranteed bandwidth 410 Mb/s for CAT - VLAN 10  on this swithces?

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Cisco Switching/Routing :: Catalyst 2960S For IPTV Backbone

Nov 26, 2011

we have Catalysts 2960S for switching in our Wireless high capacity backbone network. As agregation switch we are using 3560x.
 
I just need to know, if are these 2960S good solution for igmp snooping for whole IPTV stream. It put only a range from backbone and put out on another port. But just specified multicast addresses.
 
Imput will be 239.128.0.10 to 239.128.0.20 on Gi 0/1,Output wil be 239.128.0.10 - 15 on Gi 0/24
 
IPTV will be separated on different VLAN for eg VLAN 20,Is needed any priorization configured od switches?,The capacity for IPTV is around 500 mbps

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