Cisco Switching/Routing :: 3750G - Maximum Throughput Reduced By Stacking Or Any Of Other Features
Mar 21, 2012
We are experiencing output drops on our 3750G-12S (IOS 12.2.55).
I have monitored throughput with MRTG, but it doesn't seem that high compared to that the 3750G is supposed to handle 17.8 Mpps.
The 3750G's are stacked, running ospf, qos, multicast (IPTV) and etherchannel.Is the maximum throughput reduced by stacking or any of the other features?
I don't know if one can estimate what the maximum throughput is per ASIC or per port, but on one of the ASICs that is having drops the peak unicast load is 1.3 Mpps and multicast Mpps is 0.9 Mpps. Total ~2.2 Mpps.
This doesn't seem high at all and I don't understand why the drops are appearing. What I can do to find out the reason for these drops?
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Oct 2, 2012
I am trying to stack the following -
3750G 12S - 12.2.53(SE2 IP Services) Running EIGRP & OSPF
with
3x 3750X 48P-S - 12.2.53(SE2 IP Base License)
Doing some research, the IP Base does EIGRP on the 3750X, does it do OSPF?
If not I will have to get licence for the 3750X?
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Nov 20, 2012
have 2 3750's one is an 3750E the other one is a G... Since they are 2 different versions Do I need to correct ios for each for example my 3750E switch i would have
IP BASE
c3750e-ipbasek9-mz.122-53.SE2.bin and for my 3750G switch should i use
IP BASE
c3750-ipbasek9-mz.122-53.SE2.bin
Which would be 2 separate images
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Apr 22, 2013
I have one 3750X with C3KX-NM-10GT, I need to interconnect using stackwise to 3750G-24TS. The 3750X needs IOS 15.0(1) to use C3KX-NM-10GT, and the latest IOS for 3750G-24TS is 12.2.55. How can I interconnect them using diferent IOS?
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Jul 18, 2012
I am trying to stack a 3750g with a 3750x. At the moment they will not stack with their current IOS as the hardware version is mismatched.
According to various posts this is possible as long as the same IOS is in use. The following IOS are currently in use:
3750g - c3750-ipbaselmk9-tar.122-55.SE5
3750x - c3750e-ipbasek9-mz.150-1.SE3
I have tried to downgrade the IOS on the 'X' to 122-55.SE5 however, i get errors regarding firmware incompatibility.
I am unable to upgrade the IOS on the 'G' to 150-1.SE3, as the size of the IOS image is larger than the available flash (Version 15 IOS for the 3750G (c3750-ipbasek9-mz.150-1.SE3.bin) is 16,074,189 bytes whereas the 3750G has 16MB of flash memory or 15,998,976 bytes total which mean the IOS will not fit).
Has not actually stacked these devices successfully? I understand there may be license implications of upgrading to 15 but at the moment I just want them to stack!
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Apr 18, 2012
I have a computer connected to a Switch3750G and another computer connected to another Switch3750G. Theses switches are connected through a Optical Fiber link in the uplinks of the boths Switchs 3750. The computers are connected in the access ports, this ports works at 1Gbps. My question is Which is the maximum transfer rate that should reach between these two computers.
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Oct 8, 2012
Does anybody know the Maximum Throuput of a Csico 4948 using its Layer 3 capability? Is it 72mpps for Cisco 4948 and 102 mpps for Cisco 4948 10 Gigabitethernet?
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Jan 15, 2012
Has any come across show ver memory details on 3750G-48PS as below, One of our Catalyst 3750G running software 12.2(44)SE2 shows unexpected DRAM as below:
cisco WS-C3750G-48PS (PowerPC405) processor (revision F0) with 0K/12280K bytes of memory. This would equate to around 11MB memory which does not seem right... Is it a known IOS bug?
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Jan 21, 2013
just wonder if the Cisco Stack Wise 50CM Stacking Cable is freely available when purchasing Cisco Catalyst 3750G-48PS-E or we need to pay for it?
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Jan 18, 2011
I need to provide a router to connect Internet circuit and run IPsec to MPLS network. Circuit is 10Mbps.
What is the max a Cisco 881 can handle if running IPsec?Also, if you are aware of any branch router (1941) which allows connection to future 4G LTE .
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Jun 21, 2012
I'm getting currently installing a full Valcom IP sound and clock system , along with all new Cisco 2960 gig ps-l switches. All devices run off of POE. In the past, I have read that most AP's only draw approx. 12.5 watts (va's). But you must take into account length of wire to add your additional draw which puts you at the 14.5 they auto draw. My question being that the clocks I have auto draw 15.4 watts, which is eating up my 370w of power on my switches. The spec sheet on the clocks show only a power consumption of 4.5 watts. So today I turned a few ports down to 4.5 watts and everything still worked fine.. Any experience by chance with Valcom devices or just turning the power down on devices in general? I can imagine that a clock is drawing enough to care about the length of the wire run.
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Jun 12, 2012
We are looking at providing an ISR 819 for one of our customers using FTTC & 3G for failover .. However, I cant seem to find any recommended throughput guidence for the device? We could be looking at up to 80Mbps via the ethernet interface and I just dont know if the device will cope?
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Apr 11, 2012
I put a QoS in a WS-C3560CG-8TC-S version 12.2(55)EX2. in our lab file upload or download speed much reduced and drop the packets with QoS everyting is fine without QoS
Here is the config: My question is why I speed reduced a lot and packets to be dropped with QoS.everything is fine WITHOUT QoS.
class-map match-any VoIP description Voice IP Phone RTPmatch access-group 157
class-map match-any WEB description Internal Web, SSL Web, DNS query, Pinnaclematch access-group 153
!
policy-map QOSMARK
class VoIP set dscp ef
class WEB set dscp cs3
[code]....
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Jan 8, 2011
Am looking at purchasing a router that is capable of serving a WAN bearer at up to 1Gbps. The 3945E has had good reviews as a high throughput router but the datasheets suggests performance of 350Mbps. It also states that additional performance can be ensured by adding SPE modules. Whether the 3945E could achieve up to 1Gbps with SPE modules?
If the 3945E can't achieve such performance, The key features I am after are:
IPV4 and IPV6 support
L2tpV3 support
BGP
IP SLA
1Gb Copper Connections on-board with capability of at least 4 Ports
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Aug 31, 2011
I have a asa5580 with multiple interfaces. To replicate me databases to another site, I mainly use two interfaces on that firewall. Those interfaces have a steady pace, around 95%.
I am wondering when I should consider that the thoughput between those two interfaces is too much? Is there a good document that could explain me clearly why?
Also I want to be sure that I won't affect the normal traffic between the other interfaces. Is there a way to garantee certain traffic over others on an ASA? I don't have any router in me setup layer 3 role is perform by asa firewalls (static routes).
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Mar 6, 2012
I have a little problem...I want to see the maximum tcp connections that I had on my Cisco. I tried using show ip statistics but it's not working. I have a Cisco Catalyst 3750G (WS-C3750G-48TS)
IOS -> Version 12.2(52)SE, RELEASE SOFTWARE (fc3)
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May 24, 2013
When WAN traffic meter is enable on RV180 router maximum throughput drops to 40Mbps from ~120Mbps.Enabling WAN traffic meter is needed to get SNMP data from WAN port.
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Oct 15, 2012
what the maximum Data Througput can be for this router. Right now, the router is limiting my internet speed compared to what the cable modem can provide..So far, I know that when I connect my computer directly to the output of the Motorola Cable Modem and run a Speed Test on my Charter cable connection, the test shows ~ 50 Mbps for downloads and ~5 Mbps for uploads. That would be great, but I have multiple computers and need to use a router/gateway to feed my LAN. When I insert the RVS4000 router between modem and computer, the Speed Test results drop to ~ 16 Mbps for downloads and remain ~ 5 Mbps for uploads. During that test, there were no other computers online via the router. While 16 Mbps is not shabby, I would like to achieve the full value... is that possible?
Is the RVS4000 unit capable of 50 Mbps for 30 Mbps? How do I setup the router to achieve the maximum available download speed?There is a setup page for the router which has settings right now set at 50000 Kbps Upload and 60000 Kbps for Download; this implies to me that the router is capable of such speeds.
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Aug 11, 2011
I cannot find this info on the cisco site.
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Dec 17, 2011
I would like to configure the policy base routing (PBR) on router (3900) base on the "specific tcp port" (TCP port 16255) to re-direct the traffic to another FE port.
From cisco web portal, CAT 4500 should support PBR as below:"Policies can be based on IP address, port numbers, or protocols. For a simple policy, use any one of these descriptors; for a complicated policy, use all of them." url...
Does 3900 router has the same features on the PBR? if yes, can it support "source tcp port" and/or "destination TCP port"?
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Feb 24, 2013
We just purchased a bunch of 3750s, and we need to do EIGRP stub routing and VRF routing
For the newer IOS versions (15+), will I need activation keys?
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Feb 12, 2012
using the 55xx as a L3 Distribution switch or even as a Core. By enabling the L3 features does it allow you enabled L3 SVI's for VLAN interfaces or are there interfaces on the daughter card that are used for routing instead?
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Jan 1, 2012
I have a 2921 router and want to use mpls feature. Right Now we are using c2900-universalk9-mz.SPA.151-4.M1 image but mpls static cross connect” is not working with this image. And will this image(c2900-universalk9-mz.SSA) be worked?
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Jan 20, 2013
What features are supported in the image ipservces cisco 3750X-24T-S? Need NAT
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Nov 14, 2012
How to stack a set of these switches with the copper 5G SFP on these switches. We currently have 4 switches stacked with Cat5e jumpers between S1&S2. We want to stop using this stacking method and go to the SFP. What is the best way to do this. Live would be preferable but whatever is the safest method is the way we will proceeed. Any goth'ca's in this process?
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Jan 1, 2013
There seems to be a lot of conflicting information on what can and can't stack together in the 3750X range.
I know that LAN Base can only stack with other LAN Base switches.
Can IP Base stack with IP services in 3750X? I have also heard that the 15.x.x IOS restricts mixed feature set stacks?
I know that Cisco recommends that all switches in a stack have the same IOS and feature set but having all IP Services in a stack can get too expensive.
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Mar 29, 2012
some of the features of 6500 are enabled by default and woudn't appear in the "Show run". See the command below and how do I make sure whether these featues are enabled by default or not. Would it appear in the config if enabled?
ip verify unicast source reachable-via rx
ip verify unicast source reachable-via any
storm-control broadcast level 70
what are the difference between the commands below and can they be enabled together.
spanning-tree guard root
vs
spanning-tree loopguard default
vs
spanning-tree guard loop
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May 23, 2012
Someone had told me the 6500 switches can be stacked via fiber. This feature is available for the 3750s?
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Nov 1, 2012
I have two WS-C3750-48PS-S switches and I need to add two more. The new part number I am looking at is WS-C3750X-48P-S will these all stack together ?
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Aug 12, 2012
We have three Cisco 3750 - 48port POE -LAN switches and i am trying to see if there are any issues when we stack POE and Non-POE type of switches.Aslo looking for information on the advanatage and disadvantage the stacking can provide on a Cisco 3750 48port.
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Jan 23, 2013
We currently have a stack of 3750G switches that are running 12.2(46)SE C3750-ADVIPSERVICESK9-M
Our 3750X is currently running 15.0(2)SE C3750E-UNIVERSALK9-M and I believe we were told you can't stack with a Universal IOS image. We have the universal on there because we have some 10GB fiber connections on it that Cisco told us wouldn't work otherwise.
I realize that the switch versions need to match, but the question is, which version should we work off to have use of the 10GB SFP card?
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Mar 30, 2013
I am having troubles to get 2 C3750-X switches WS-C3750-X-48P-L) to stack. They are both running iOS 15.0(2)-UNIVERSALK9, and are licensed for IP Base.
If I connect stack port 1 of switch 1 to stack port 2 of switch 1, and stack port 1 of switch 2to stack port 2 of switch 2 I get the following:
WS-C3750-X_STACK1_SW1>show switch stack-ports summary
Switch#/ Stack Neighbor Cable Link Link Sync # InPort# Port Length OK Active OK Changes Loopback Status
[Code].....
I have tried restarting (powering off for about 1 min and turning back on) simultaneously, and powering off switch 1 for 1 min and switch 2 for 2 min. I have also tried both enabling the stack ports, and disabling followed by enabling.
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Mar 14, 2012
Im going to be ordering a new 3560X L3 switch (ws-3560x-48pf-s). We currently have a 3560 V2 switch and I've read it supports stacking, but looking at the back I just see a console port. Is there an extra card I have to get for this 3560V2 to make it stakable with the 3560X?
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