Cisco Switching/Routing :: Is It Better Take 6724 With DFC3BXL Then Only S720-3BXL

Jan 22, 2013

We have 7 interfaces with rj45 connections.. all around 100Mbit per connection .. most likely in the future we will need a couple more interfaces.. i was thinking it would be better to take a WS-X6516-GE-TX card then a FE card as for example a WS-X6148-RJ-45 .Now we want to implement a 7606 with a SUP720-3BXL with 1GB dram for the RP(MSFC3)...  so enough memory to support the 2x a FULL BGP table to two peers.
Q :  Does the SUP720-3BXL work well with two peers sending the FULL BGP table ?
Q : And does that also work with a WS-X6516-GE-TX connected to the two peers sending the FULL BGP table ?  .. or is it better to take a 6724 linecard with a DFC3-BXL so that the 6724 will lookup routes locally instead a 6516 will have the S720- perform the routing ? I know that adding the DFC's increases the bandwidth of the chassis significantly (40gbps per slot most 6700 linecards ,and  20gbps for the 6724 which is 1:2 oversubscribed )
Q: Or is it better to connect the two peers to the two SFP interfaces on the SUP720  , and connect the small routers and customer networks to the 6516 linecard? 

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Cisco Switching/Routing :: High Memory Utilization On Line Card 6748 And 6724?

Apr 15, 2012

I am writing with regard to a high memory utilization that we have on a pair of line card WS-X6748-GE-TX and WS-X6724-SFP for a VSS 6500. I am enclosing a little part of the "show tech"of this VSS 6500 where is possible to see the high memory utilization of the line cards 1/1, 1/2, 2/1, and 2/2, in despite of having some ports in state connected.  In addition of this, the IOS installed on VSS 6500 is s72033-ipservicesk9_wan-vz.122-33.SXI6.bin for checking if there are some bugs affecting the behaviour of the Switch for this case.
 System Resources
  PFC operating mode: PFC3C
  Supervisor redundancy mode: administratively sso, operationally sso
  Switching resources: Sw/Mod    Part number               Series      CEF mode
1/1      WS-X6748-GE-TX            CEF720           CEF
1/2      WS-X6724-SFP              CEF720           CEF


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Cisco Switching/Routing :: Sup720-3BXL Stuck On SP

Mar 19, 2013

I have a SUP720-3BXL that will not boot. It will get stuck at booting from the SP. It never switches over to the RP.  [code]

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Cisco Switching/Routing :: Need To Know RMA Procedure VS S720

Dec 3, 2011

we purchase only Cisco Supervisor Engine VS-S720-10G and use it in our old C6509-E chassis.Now the supervisor engine was dead,(means not working and no LED's are ON). How can i claim the RMA from cisco?
We purchase from one of our partner. We send it to them,they are not able to find the Serial number from the Supervisor Engine module (Because lot of serial numbers are on the board). Also the customer through the catoon.
Now how we can know which is exact serial number of sup? How to get RMA from the Cisco on which serial number?

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Cisco Switching/Routing :: VSS With VS-S720-10G-3C And WS-X6748-GE-TX Compatibility?

Feb 7, 2012

We are upgrading two standalone 6509E chassis to a VSS system with new VS-S720-10G-3C cards.  The 6509's have WS-X6748-GE-TX card with DFC3B daughter cards (see below).  The compatablity matrix (see below) states that 67xx cards are supported but it goes on to state DFC3C or DFC3CXL cards are needed.  So does this mean that the existing WS-X6748-GE-TX cards have to be upgraded or will they be supported? 

Core #1Mod Ports Card Type                              Model              Serial No.--- ----- -------------------------------------- ------------------ -----------  1   48  CEF720 48 port 1000mb SFP              WS-X6748-SFP       SAL  2    4  CEF720 4 port 10-Gigabit Ethernet      WS-X6704-10GE      SAD  5    2  Supervisor Engine 720 (Active)         WS-SUP720-3B       SAL  6    2  Supervisor Engine 720 (Hot)            WS-SUP720-3B       SAL  7   48  CEF720 48 port 10/100/1000mb Ethernet  WS-X6748-GE-TX     SAL  8   48  CEF720 48 port 10/100/1000mb Ethernet  WS-X6748-GE-TX     SAL


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Cisco Switching/Routing :: Downgrading IOS On Sup720 VS-S720-10G?

Oct 26, 2011

I got a new VS-S720-10G it had 122-33.SXH8b on there. I had to downgrade it to 12.2.33.SXI1 to match our other switches. I installed the file I use in all the other switches, s72033-adventerprisek9_wan-mz.122-33.SXI1.bin but the Sup is now is only booting up only to ROMMON mode.
Initializing ATA monitor library...
Self extracting the image... [OK]
Self decompressing the image : #################################################
################################################################ [OK]
 %SYSTEM-1-INITFAIL: Network boot is not supported.
System Bootstrap, Version 8.5(4)
Copyright (c) 1994-2009 by cisco Systems, Inc.
Cat6k-Sup720/SP processor with 1048576 Kbytes of main memory

How do I get the older version of IOS to load up?

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Cisco Switching/Routing :: C6509-E And VS-S720-10G Visio Stencils?

Sep 9, 2009

I need those two stencils.I have checked here [URL] but:

- the one for the C6509-E is not there

- the one for the supervisor does not work properly (misaligned anchor points).

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Cisco Switching/Routing :: Configure Egress Netflow In 6500 (VSS) With VS-S720-10G Supervisor?

Jun 9, 2013

I'm trying to configure a egress netflow in a 6500 (VSS) with VS-S720-10G supervisor. I foud some old posts and understood that netflow wasn't supported on 6500 but i found a new document and it seems that netflow is supported in Supervisor Engine 2T:[URL] Does the netflow still not supported in VS-S720-10G? It's weird because the command is supported:
#sh run int vlan 4
Building configuration... 
Current configuration : 353 bytes
interface Vlan4
ip address X.X.X.X


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Cisco Switching/Routing :: VS-S720-10G - Key Sequence To Go Into ROMmon From Console Port For VSS System

Jan 19, 2012

What key sequence to go into ROMMON mode from the console port for VSS system with 2 VS-S720-10G?

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Cisco Switching/Routing :: 6500 Sup VS-S720-10G Traffic Forwarding In Active And Hot State

Jan 24, 2012

I have catalyst 6500s with two VS-S720-10Gs, one is in Active and one is in Hot state. Both Sup cards have two 10G uplink ports. How does the traffic forwarding works in this case on the uplink ports? Do these uplink ports actively forward traffic or it is only the uplinks ports on Active that forward traffic? I see CDP neighbors on both Active and Hot SUPs uplinks ports - it  indicates that packets are flowing on both cards.
I want all uplink ports on both SUPs to actively forward traffic. Does it work? What is the config for this?

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Cisco WAN :: SUP720-3BXL / Using Of ECC Or Plain Memory?

Dec 7, 2010

i know that Sup720-3BXL has been used the SDRAM.but i don't know that which of memory? using of ECC or plain memory?if use the plain SDRAM, how can prevent to parity error?

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Cisco WAN :: WS-SUP720-3BXL And WS-X6748-GE-TX Configuration

Feb 20, 2013

I have the above config in a 6509-E chassis with X2 Cac-3000 psu's
The problem i'm having is when everything is powered up it runs fine for about 10minutes then reloads the switch,The 6748 has a 6700-CFC installed the only way i have managed to get it run without crashes is to remove the 3BXL card from the sup and replace it with a PFC-3B, whilst this has solved the problem the client wants the 3BXL card to be installed, am I right in thinking that the CFC installed on the 6748 is incompatible with the 3BXL or maybe the 3BXL is faulty

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Cisco WAN :: 7613 - Redundancy With WS-SUP720-3BXL Module

Mar 20, 2012

We have Router CISCO7613,SSO redundancy configured with two Sup 720-3BXL running 12.2(33)SRC1 image. Even thought I've configured SSO, my standby sup remains in COLD state with the following logs generated.
Mar 20 22:07:32.514 IST: %ISSU-SP-3-PEER_IMAGE_INCOMPATIBLE: Peer image (c7600s72033_sp-ADVENTERPRISEK9-M), version (12.2(33)SRC1) on peer uid (8) is incompatible
Mar 20 22:07:32.514 IST: %ISSU-SP-3-PEER_IMAGE_INCOMPATIBLE: Peer image (c7600s72033_sp-ADVENTERPRISEK9-M), version (12.2(33)SRC1) on peer uid (8) is incompatible
Mar 20 22:08:48.263 IST: %PFREDUN-SP-4-INCOMPATIBLE: Defaulting to RPR mode (Runtime incompatible)

These logs says that due to some reasons, the configuration is not being synchronized with active and standby sups and hence the redundancy mode remains in RPR mode and SSO not achieved, and hence COLD state. However, I couldn't find a reason why the configuration is not being synchronized, I've issued the command, redundancy config-sync ignore mismatched-commands, and everything worked fine, SSO achieved and standby sup came to HOT state.Now my query is, 

1. Why the configuration was not synchronized and standby SUP got in COLD state??
2. Since I issued the suggested command, at least, some of the mismatched lines in configuration will be ignored, Will that create a problem when my Active sup fails and standby become active?

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Cisco WAN :: VS-S720-10G-3C On 7600?

Nov 5, 2012

I am pretty far out of my comfort zone here but these VS-S720-10G-3C cards were purchased to upgrade our 7609/7606 routers, the spec sheet says they are compatable but I can't find an IOS that "likes" them. I had no problem finding an IOS and using the vss cards in our 6506...


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Cisco WAN :: 6509 - VRF Limit In VSS With VS-S720-10G

May 8, 2011

I'm planning to implement a VSS system with two 6509 and VS-S720-10G supervisor engines. In technical specifications is said that this card can support up to 1024 VRFs. Is this limit the same when working in VSS?

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Cisco Firewall :: Will FWSM 3.1(20) Run With VS-S720 Running Native

Jun 26, 2012

I am about to replace the supervisor engine in our pair of distribution switches in our data center. We currently have a FWSM module installed in each of my distribution switches running 3.1(20) code. The old sup720 are running 8.6(4) and the mfsc are running 12.2(17d)SXB11a. I am wondering about the compatibility of running the FWSM with the same code after installing the new VS-S720 modules. I do not plan on configuring virtual switch yet and did plan on upgrading the FWSM to 4 code train but just not immediately. Will I be able to run my FWSM using the current 3.1(20) code after I install my new VS-S720 running in native mode?
If I have to upgrade the FWSM then I need to know if I have to upgrade the module in each distribution switch at the same time? Furthermore I do not believe that the FWSM 4 code is supported in hybrid mode, which means that I will have to convert to native before upgrading to FWSM 4 before I install the VS-S720 in one of my distribution switches. Currently the FWSM modules are in active/standby mode in different chassis.
I had planned to install the VS-S720 module in one of my distribution switch and do the other installation a week later. I would rather not have to convert to native and upgrade the FWSM modules in both distribution switches during the first switch upgrade.

cnDS02> (enable) sh mod    
Mod Slot Ports Module-Type               Model               Sub Status
--- ---- ----- ------------------------- ------------------- --- --------
1   1    16    1000BaseX Ethernet        WS-X6516A-GBIC      no  ok
2  .... Please refer to Detail Note. cnDS02> (enable) sh mod    


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Cisco Switching/Routing :: N5K-C5548UP-FA - Switching / Routing Capacity?

Jan 29, 2013

I am buying a Nexus 5K (N5K-C5548UP-FA) with the layer 3 card (N55-D160L3 - Nexus 5548 Layer 3 - Daughter Card).The switching capacity of it is 960 Gbps but I know I should expect less doing the Layer 3 function  (it will only be used with static routing).What switching/routing capacity should I expect? How can I estimate it? What else should I consider?

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Cisco Switching/Routing :: 6509 / 4900 - Network Down Cause Switching Supervisor With Redundancy

Jan 11, 2012

we've had an issue with our network, we have 2 6509 connected with redundancy, which are connected with 2 x 4900 Switches, from which are connected to a ESX Chassis for visualization, the thing is that the ESX stopped working, and the 4900 switches, and the main core were suffering from overload, they hang on it very well, in order to stop the overload, one of the links to the ESX Chassis were disconnected from one of the 4900 switches. The CPU usage from the 4900 and the core(6509) went down below 40%, and then they started to migrate the virtual servers from the chassis to another 2 chassis that were added right after. They were actually working well, but suddenly the 6509 changed to the other supervisor after everything was OK. We were wondering what could have been the cause of this, maybe the virtual servers migrations, maybe the overload from the ESX ? We also had a few question, is there any need to reload the cores every few months as a planned task ? Because the cores have been up for more than 1 year. And also is there any kind of of tool to monitor the CPU status, or the status overall from the cores or the switches ?

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Cisco Switching/Routing :: 7609 For Switching / Based On LAN (VRRP / HSRP) Feature

Oct 18, 2011

I am facing an isssues with 7609 for LAN switching , based on  LAN (VRRP/HSRP) feature.Actually  we are having ES+ cards (on 7609) and we are using multiple groups(say  350 vrrp groups) running on the router . the routers are connected as router 1>>> mux(which is working as switches)>>> router2

my questing are

1.  does their will be "multicast packets" (for VRRP/HSRP group) "from backup  router to Master router", when in stable state( ie when Master and  backup are already chosen) , or the packet from backup to master should  be unicast.I know for sure, the packet from master to back is multicast packets denstination to Multicast IP packet and To MAC address.I am not sure but I think from backup to master it should be multicast
2. what is frequency of these packets( from backup to master)
3.  As i have multiper group on a single interface ( we are using q-in-q),  when the connectivity from router's is broken, then does all the groups  will muticast their active roll in the lan sengment "at once" or it will  be in a groups say 100 groups at once, and after few ms few 100's and  sone ( as is on OSPF or RIP)
we are in between troubleshooting I hope we get the ans( Actul problem we are seeing in the router's that we have 2 ports on active routers and 2 ports on standby router , but we are not seeing muticast on 1 port on standby router where as all other 3 ports are seeing multicast packets) [code]

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Cisco Switching/Routing :: Catalyst WS-C3750G-48TS-E - Virtual Switching System

Sep 10, 2012

I would like to know if Catalyst WS-C3750G-48TS-E recognizes and understand Cisco VSS ( Virtual Switching System) . Is there a List available which tells us which Old Catalyst Switches or current switches understand Cisco VSS?

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Cisco Switching/Routing :: 2921 Process Of Switching Infrastructure Of Firewalls / VPNs

Jul 4, 2012

We are in the process of switching our infrastructure of our routing/firewalls/vpns over to cisco.  We are switching our first location and one of the issues I'm struggling with is windows authentication pass-through for internally hosted web pages.  Meaning, user inside our network has the 2921 as their default gateway, they try to access a web page that is hosted on the internal network but is secured with windows authentication.  In the past, because they are logged into the domain internally, the website authenticates and loads.  After switching to the Cisco, it asks for a password even though they are logged in.
Because its the web server that actually authenticates I'm not sure why the router isn't allowing that to happen, but I can't think of anything else that could be causing this behavior.

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Cisco Switching/Routing :: Nexus 7010 / VSS - Does It Support Virtual Switching?

Apr 9, 2010

Does the nexus 7010 support virtual switching yet?  All of the posts I have found from about a year ago say that it is going to be supported, but there were no dates listed.  I heard the same thing from Cisco a while back, but haven't followed up with it.If it is supported finally are there any configuration guides available for it?

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Cisco Switching/Routing :: Switching Redundancy For ESXi VMHosts Scenario

May 12, 2013

I have the following devices :
-1 VM Host
-2 Layer 3 switches
I would like to provide full redundancy for all vlans being used by VM Guests on the VM Host as well as the management vlan being used by the VM Host.I have created two LACP etherchannel connections on the VM Host. Each etherchannel from the host consists of  4 ports spanning a single NIC. One etherchannel connection goes to a trunked etherchannel connection on switch 1, and the other etherchannel connection goes to a trunked etherchannel connection on switch 2.Switch 1 and switch 2 have an etherchannel connection between them that carries all of the vlans in the topology.Vlan 2 is the managment vlan. Vlans 3, 4, and 5 are vlans that VM guest systems will be using for normal data traffic.
I intend to use switch 1 as the VRRP active router and spanning-tree root bridge for vlans 2 and 3.I intend to use switch 2 as the VRRP active router and spanning-tree root bridge for vlans 4 and 5.The spanning-tree configuration is using multiple spanning-tree with two instances. Instance 1 has vlans 2 and 3 associated and Instance 2 has vlans 4 and 5 associated. I would like to have this topology be fault tolerant to the point where if one of the etherchannel links between the host and one of the switches goes down, (for example, if switch 1 was powered off) traffic will be automatically redirected through the other functional link. I believe that my VRRP configuration would allow for a fairly quick failover of layer 3 services, but I am not certain that my design will be functional at a layer 2 level.
What I am uncertain about is how spanning-tree will converge. I am assuming that the virtual switch on the VM host will not be forwarding any BPDUs being sent by either switch. Would either of the links connecting to the host be considered a redundant link by either switch?Would the link between switch 2 and the host be inactive for all vlans in MST instance 1 during normal operation?Conversely, would the link between switch 1 and the host be inactive for all vlans in MST instance 2 during normal operation? Would all links remain active for ALL vlans? Would this mean that some traffic may travel through switch 2 to reach switch 1 instead of going directly to switch 1?

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Cisco Switching/Routing :: 6500 Switching Fabric Bandwidth 720 Is Calculated?

Jan 21, 2012

As per my understanding 6509 all slots are dual channel, so 9 slot * 40 per slot (20 g in and 20 g out) = 360 GB How cisco claim the 720 ?? What about the 6513 chassic switch fabric connection?

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Cisco Switching/Routing :: Switching Fabric And Forwarding Rate C3750x

Aug 6, 2012

It is said that the switching fabric of WS-C3750X-24T-E is 160Gbps.Could any body tell me what is switching fabric, any relevance or difference from forwarding rate?,Is there any document to know how will the switch reach the 160Gbps full switching fabric performance?

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Cisco Switching/Routing :: 3750G - Stack Switching Priorities Not Correct

Mar 21, 2012

I got Two Distribution Switches of Cisco 3750G. Each Distribution have two 3750G switches stacked. I also have one Cisco 3750V2 Access Switch connected to both Distribution. When I am checking for redundancy, I can only get redundancy test pass for one link not atall for other. If I have a link up with Distribution 1 only then its fine; but disappointment with Distribution 2 link. I can see that the switch priorities of Dist 2 is not correct ie. Master's priority is 10 and Member's is 15.
My question is that due to misconfigured priorities on Distribution 2 stack switches I am failing with redundancy if ONLY Dist 2 is up and Dist 1 is down.

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Cisco Switching/Routing :: 6500 / High Switching Processor Utilization?

Sep 20, 2012

I am seeing a strange situation on my 6500 switch?By having snmp walk on '' (== cpmCPUTotal5sec), I came to know that there are two processor and the cpu util for switching processor is gone to 88 % and some time creeps to 99 %.
snmpwalk -v2c -c "removes"  sw6500 ''
SNMPv2-SMI::enterprises. = Gauge32: 12 (--- this is for CPU of Router Processor )
SNMPv2-SMI::enterprises. = Gauge32: 99 (--- this is for CPU of Switching Processor )
but when I do sh process cpu on the console, all looks normal as it shows cpu utilization of RP.  why the value is so high on the switching processor ?

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Cisco Switching/Routing :: Sub-50ms Protection Switching At Ethernet Layer (ERPS G.8032)

Jul 24, 2011

It is understood that sub-50 ms ERPS convergence can be achieved with certain HW/SW combinations.
1) What are the platforms supported (and with what FW/SW) has this been tested ?any results that can be shared?
2)  Link failure detection in GigE on Copper is slower compared to GigE  over "pure" Fibre; so no sub-50ms would be possible with Copper ring sub-50ms convergence achievable with "combo SFP ports" ?

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Cisco Switching/Routing :: Facebook Forum Data Center Switching With Nexus 5000

Oct 8, 2012

Lucien is a customer support engineer at the Cisco Technical Assistance Center. He currently works in the data center switching team supporting customers on the Cisco Nexus 5000 and 2000. He was previously a technical leader within the network management team. Lucien holds a bachelor's degree in general engineering and a master's degree in  computer science from Ecole des Mines d'Ales. He also holds the  following certifications: CCIE #19945 in Routing and Switching, CCDP, DCNIS, and VCP #66183

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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 :: 2951 - HSRP Backup Taking Two Minutes When Switching Off Primary Router

Oct 7, 2012

I configure HSRP on Router 2951 as a primary router, and Router 2811 as backup router. But when I am switching off my Primary router the backup router is  taking 2 mins to take over form primary router. 

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Cisco Switching/Routing :: 2906 So Much Switching Capacity In Switches

Sep 13, 2012

Why 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?

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Cisco Switching/Routing :: 6509 - Upgrading Switching Infrastructure

Apr 11, 2012

The have around 80 staff and I think the current infrastructure is overkill for the size of the company. The current kit is old and they have no GB ethernet ports. They currently have:-

Core Switch:
1x Cisco c6509with a 48 port fast ethernet module (WS-X6248-RJ-45)
and an 8 port fibre module (WS-X6408A-GBIC)

I'm looking to replace this with something with 72 ethernet ports and 8 fibre ports

Access Switches:
2x 3500Replacement needs at least 48 ports and 2 fibre modules each

and 2x 5500Replacement needs at least 72 ports and 2 fibre modules each.

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