More 95xx questions! In the past I have learned that Cisco marketing doesn't provide full details so I want to make sure I don't get dragged under the bus a 3rd time! I know that specs contained in their data sheets can sometimes be misleading. Scenario - I am designing an upgrade for our aging network and need to come up with a rounded cost for our budget managers. The core 6509 pair will be replaced with a set of 9606Rs with a SVL - that's a done deal in my mind and already figured out. However at some of our larger remote sites (users only with no real servers) I am trying to cut corners to keep the costs down --- so a pair 9606rs or even a single 9606r with dual sups is just too much considering the bandwidth they actually need. So --- I have a remote site with a lot of 10Gb connections to a 6509 (24 presently). As we upgrade our 3750E/X switchstacks (20Gb etherchannels) and add more 93xx stacks I want the ability to upgrade to 40/100Gb links. This site links to our data center via a pair of dark fiber links along with dual backup rings in case the two point to point links fail. Since I will first replace the 6509 by itself and the stacks slowly over time, I want to be able to support all the 10Gb uplinks and eventually convert many or all to 40Gb. The two dark fiber links to the main site will be upped to 100Gbs. My thoughts are that I will have a pair of C9500-24Y4C-E using a SVL to support all of my 10Gb etherchanneled stacks and these C9500-24Y4C-E will be multi-chassis etherchanneled to a pair of C9500-32C-A switches that are also using a SVL. The L3 routing will all be done on the C9500-32C-A stacks. Questions--- I need more info on the C9500-32C versus the C9500-32QC switches. Can I assume that I could create 10Gb etherchannels (dual for a 20Gb total link) directly on the C9500-32C if I use that 40 to 10Gb adapter in a 40/100Gb slot?? If so maybe two C9500-32Cs would totally suffice for everything! What does the 40 to 4 10Gb breakouts provide? Can I create an etherchannel to a 3750X with this if I used four ports?? Could I just use two of the four ports (assuming it supported the four ports in an etherchannel) How does the C9500-32QC actually get cabled? If I use a 100Gb port do I loose the port under it or if it is port 1 do I loose port 16??? Is everything else identical on these two machines (except for the 100Gb port count, speed, mem etc). In other words do they both support the same exact transceivers? Like the new 40/100 BIDI one that was released? If I create an SLV between C9500-32Cs can I use 100Gb connections or are they limited to 40Gb (with a maximum of 8 links??)? THANKS!
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Unfortunately I haven't looked at the switch stats on a WAP interface to see the max throughput. Even though the 3802s all connect at 5Gb, I don't know what their real max throughput speed would be unless I have a bunch of users with high end laptops trying to download at once and that would be a rarity. Plus most laptops are older models - not the latest so their wireless speeds are greatly hindered by their older chipsets. I will attempt to see what it is when I get the right conditions.
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Quick question based on reading material. Can I assume the following....I can take a new 40Gb interface and use an adapter to change the interface to a single SFP+ (10Gb) interface. This is a one for one port connection. The 40Gb to 4 10Gb interfaces is where I need clarification. Does these adapters simply take a 40Gb interface and create a 4 port etherchannel connection to another device, which means all four ports are dedicated for this specific bundled connection to another device? In other words this does not give me the ability to use this adapter type to create four separate unique 10Gb connections to different switch / device entities - correct?
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?? What do you mean? Do I have 1 Gb switch ports exceeding the 1Gb physical limit or do I have devices that are reaching the 1Gb limit,,,,,,or 10Gb limit on a 10Gb interface? All of our PCs are usually attached to 1Gb ports but some will be attached to mGb as time goes on. Our laptops and PCs can push the 1Gb to the limit during large file transfers and images and I can see it max out on both the switch and laptop so it is limiting our transfers to a small extent some of the time. On the 10Gb interfaces we have servers and NAS devices with etherchannels. These push well above the Gb speeds but most stay under 6Gb - 8 Gb mainly because of the older hardware and card interface hardware I suspect. I am telling our server admins to only order 40Gb interfaces from now on since I suspect that our newer Flex and Vms will easily attempt to push way past the 10Gb speeds during backups and large file transfers. Note - If QOS is on a 1Gb port with a laptop, it will hamper the speed somewhat and you will never come close to the 1Gb speed. On our 10Gb interfaces to servers and NAS I ususally turn off QOS since it greatly impacts 10Gb ports on the older 3750E/G/X models.
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Thanks...I was hoping it worked that way so I will stay with ME for another year or two since we really have no complaints with speed or connections issues at our sites! We did not like the fact that ME did not support a LAG but once the mGb connections were brought up to 5Gb that was no longer an issue for us.
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We have some wireless controllers (2504s, 35xx) but never used them yet and have been using Mobility Express at our large remote sites. Since it has mGb, the 3802s connect at 5Gb on our 3850s. We basically setup ME using trunks on our access points to allow local lan connections authenticated via a radius server with laptop certs and also have ssids for open internet using third parts devices like GIS Internet services. This all works fine and we only have about half a dozen sites switches over so far....about 100 WAPs total. So when I see statements about the 3850...saying up to 40Gb of wireless, I am assuming they are referring to the wireless controller limitations since I don't see how that would have any effect on my ME. So what are the limitations of ME....if I have 32 access points connected to 3850 stacks on mGb (5Gb speed connections) are the total speed limitations limited to the just the local access point to switch speeds? In other words once the radius authenticates a user on the ME controller, is there any speed limitations to the users and access points based on the ME controller? I like the ME since it is easy to setup and I am not passing data all the way across the network to a centralized single controller but if there is a better practical / faster solution please let me know.
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Normally we order 3750/3850 IP base or IP Services switches (main stack at remote sites) and only rarely do I use Lan base switches - like in a few 4948 switches. If I switch from my 3750/3850 IP base base switches and start using the Catalyst 9300 with network essentials, what will I actually lose versus the IP base functions in the 3750/3850 stacks? I see that the network essentials supports OSPF (which is our routing protocol) with 1000 routes. Can I assume this means it fully supports OSPF but cannot hold more than 1000 OSFP routes in the routing table? (which would not be an issue for us). We use Voice paging but as long as my main routing stack at the site uses IP services or the new network advantage then I don't see the multicasting as a problem either. QOS is supported with network essentials ....so what would I lose the ability to do really with network essentials versus the versus IP base code of the 3750 stacks? I assume if needed I can still add local OSPF routes with the network essentials and import them into the OSPF routing. Thanks
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Thanks, That pretty much sums it up once i understood your notations. Disappointed in that the SVLs kinda drops the ball speed wise compared to the stacking backplane speeds of the 9300 and 3850s. It would have been much better if the 9500 series allowed a physical high speed connection between two switches for redundancy in addition to this virtual connection link which requires wasted ports to get the same speeds as the 3850/9300 backplanes. A single 1U high speed switch is never an option anymore for todays networks and physical redundancy options should be included in the hardware.
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I am leaving in a year and our group wants options as to what to do in the future with our current pair of 6509s setup in VSS. We currently use a Sup 720 10G in each chassis and I know that going to 40Gb interfaces requires the 2T sup at least and want to use them with our 3850 stacks to the core 6500s and not just between or stacks. (We also have another single 6509 at another site with a sup 720 10G pair.) Most of our connections to our larger sites are via 10Gb fiber connections set in etherchannels (20 and 40Gb) from the 6500s to stacks of 3750s and 3850s. We will probably keep installing or add 3850 stacks as we replace or upgrade sites with older 3750X/E E models. Our main concern is that the 6500s will have an end of life soon and we really don't want to pump a lot of money into new sups and 40Gb interfaces since the boxes themselves are older and have limitations (like channel slot limits of 80G) compared to the speeds of some of the newer equipment out there. Since 80Gb etherchannels (pair of 40Gb links) is probably what we will standardize on due to costs, we want our core 6509s and 6509 to be replaced with something that can handle a lot of mainly 10/40Gb interfaces and maybe a few single Gb. I don't see any direct info for a 6500 VSS replacement so I suspect a single box like a 9000 Cat would have to do with redundancy in it. Any recommendations as to the best options out there? We will remain using Cisco equipment since people I work with are at least familiar with some of it and the 6509 VSS setup has worked out well even when I had SUP failures on one side and lost a box (due to the redundant portchannels configured between the boxes.) We will also probably remain using 3850s (I know there are 3950s) just to keep consistency in our network for replacement parts. We probably have 150+ switches total in our network (data and Voice). Thanks
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Current network scenario - 6509s (VSS with two 6509s at core site connecting to remote sites (wan - L3 routed connections) using 10Gb fiber connections (20Gb port-channels). Remote sites consist of a core stack (3750) connecting to other 3750 stacks with layer 2 20Gb portchannels.
We use QOS in our network but on our 10Gb connections we simply trust the settings and do not impose the service policy like we do on our 1Gb PC/Phone connections as shown below:
PC port setup:
switchport access vlan 210 switchport mode access switchport voice vlan 510 switchport port-security maximum 3 switchport port-security aging time 3 switchport port-security aging type inactivity switchport port-security power inline auto max 15400 srr-queue bandwidth share 10 10 60 20 queue-set 2 priority-queue out mls qos trust device cisco-phone mls qos trust cos auto qos voip cisco-phone spanning-tree portfast service-policy input AutoQoS-Police-CiscoPhone
Sample port of an L3 etherchannel connection over the wan to the 6509 from a 3750X core stack
interface TenGigabitEthernet1/0/1 description connection to OCIS-FR-6509-1 no switchport no ip address mls qos trust dscp channel-group 48 mode active
Sample port of etherchannel between 3750X core stack and layer 2 3750X stack at a remote site
TenGigabitEthernet2/1/1 description conn to CS-F1-3750X-1 TE2/1/1 switchport trunk encapsulation dot1q switchport mode trunk mls qos trust cos channel-group 1 mode active
Finally to questions:
We don't put the service policy on the 10Gb interfaces on the 3750X/E devices since we were told it actually hurts performance and therefore we just trust the QOS settings on the packets. In a few tests we did long ago we did see a performance it on the 10Gb with QOS policy enabled.
NOW TO my main 3850 questions...
We applied layer 2 QOS to our 3850 stacks - example of result on port below:
interface GigabitEthernet4/0/7 switchport access vlan 230 switchport mode access switchport voice vlan 530 switchport port-security maximum 3 switchport port-security aging time 3 switchport port-security aging type inactivity switchport port-security trust device cisco-phone storm-control broadcast level 0.50 storm-control multicast level 0.50 auto qos voip cisco-phone spanning-tree portfast service-policy input AutoQos-4.0-CiscoPhone-Input-Policy service-policy output AutoQos-4.0-Output-Policy
WHat should we do our our 10Gb and 40Gb Wan (L3) and lan (L2) etherchannel connections between our new stacks? Should we apply the service policy or just trust the COS or DSCP settings on the packets over the high speed connection between the stacks and the 6509 L3 connections?
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okay...so how do I remotely reboot an individual unit from the ME GUI screen...used to be able to do it on old code...don't see that option on the newer codes that I have installed....not the controller reboot but a single AP reboot only....????
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