I am trying to connect a cisco catalyst 3750g-48ts with our exsiting 3com corebuilder 9000 using the SFP ports, I have established a link and the interface is up.
The issue is that no data is passing through between the two, everything looks like it's up and enabled, spanning tree has detected the uplink port and has automatically set it to forward, both devices suggest the link is in place and the lights are on .
If I have two stackable switches one that connects to the 6509 core switch and the other switch does not, do I have to uplink the switch to the other switch so that switch has route to the core switch or because the switches are daisy chain there is not need to cable one switch to to the other switch connected to core switch?
View 6 Replies View RelatedI have three switches:
primary - Cisco Catalyst 3750G-24TS-24
and two SG300-28
I need to apply uplinks as follows:
3750G-24TS-24 SFP (1) -> SG300-28 (first) mini-GBIC (1)3750G-24TS-24 SFP (2) -> SG300-28 (second) mini-GBIC (1)SG300-28 (first) mini-GBIC (2) -> SG300-28 (second) mini-GBIC (2)
I would like to know, What type of mini-GBIC and SFP and cable I should use for SX Multimode?What max speed rate I will get?
I have a new Cisco 2960 S series switch with a basic configuration that needs to be uplinked or daisy chained to a Cisco 3750 switch. I am not getting any connectivity to the network with either a straight through or crossover cable. the port remains in amber but a 'show interface' indicates that the interface is up. I can manage the switch with a PC patched into any port on the switch with a static IP address. Must be something very simple that I am missing. Outlined below is the configuration.
Refresh_SW1#sh ver
Cisco IOS Software, C2960S Software (C2960S-UNIVERSALK9-M), Version 12.2(55)SE3,
RELEASE SOFTWARE (fc1)
Technical Support: [URL]
[Code].....
i have standalone 3750 switch. RPS light is green and system light is off.
3750TS#sh env all
FAN is OK
TEMPERATURE is OK
[Code].....
i have another switch with same model and ios its RPS light is off and system light is green
We recently purchased two 3750-X 48-port switches. We are in the process of connecting the Data Stack and StackPower cables. The question we have is what is the recommended Data Stack and Power Stack cable configuration if you only have two switches? All of the documentation that we have seen is for three or more switches.
Data Stack: Our assumption is that we will go from Stack 1 on the top switch to Stack 2 on the bottom switch. Do we need to then connect another cable from Stack 2 on the top switch to Stack 1 on the bottom switch? We would think not, but figure we should check. We plan on adding another three in the next budget year, which starts in May.
StackPower: Our assumption is that we will go from S-PWR on the top switch to S-PWR XPS on the bottom switch. Do we need to then connect another cable from S-PWR XPS on the top switch to S-PWR on the bottom switch? We would think not, but figure we should check.
I have a RSPAN session configured between a Cisco 3750 and Cisco 2950 switches and I dont see the traffic I am expecting to see on the destination port. I only see broadcast traffic .. HRSP hellos etc. Below is what I have configured on both switches.
3750 (gi1/0/33)----TRUNK------(fa0/47)2950(fa0/4)-----windows server
3750
---------
monitor session 1 source interface gi1/0/18
monitor session 1 destination remote vlan 901
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I have a problem, here are the situation
- 1 Catalyst 3750
- 1 Catalyst 2960
- 4 Finger Print
- 1 HUB
Configuration
- Catalyst 3750
Interface VLAN182
IP Address 10.62.182.254 255.255.255.0
Interface G0/2
Description Finger Print Server
Switchport mode access
[code]....
Here are the problem,If i connect Finger Print Device to port catalyst 2960, some device not sending data to server, but if i connect all Finger Print to HUB and from HUB connect to Catalyst 2960 at port F0/5, All Device(Finger Print) can send data to server...Is there any special configuration in catalyst so all device can direct connect to port catalyst 2960 without HUB?
Why the nexus 2k has 8 uplink ports ?
the nexus 7k or 5k can be devided into 4 virtual devices ( using vdc)and making 8 uplink ports in the 2k will allow us to use the extender for all the 4 vdc's with 2 uplinks ( for redundancy ) from each vdc
I have a two Cisco 4510R each with two sup V-10GE redundant. The code on these sup modules are 12.2(31r)SG3. I need some assistance in getting this setup worked out. I have all four of the 10GE populated with appropriate optics. I setup a link from one 4510R to the other using these interfaces. From the documentation I found I had to use Tengi1/1 and Tengi2/2 as the redundant pair. I plugged the up link into these ports. The Tengi1/1 (active supervisor) links up and works fine. But when I look at the ports port Tengi2/2 it isn't showing link or active. Now port 2/1 (nothing plugged into it) is showing as active.
Now is the redundancy supposed to be 1/1 and 2/1? If so, the switch is in production, when I move the connection over from 2/2 to 2/1 will it cause a outage? The reason for this is I now have a system with a 10G port and would like to utilize one of the other 10G ports. Is that possible? Or does it have to be a lag/redundant up link to work (say to another switch)?
I have a switch 2960-24TC-L with GEC (realised with 2 giga interface uplink) with switch 3750. the configuration is ok, the GEC is up and other feature working. I try to upgrade 2960-24TC-L from 12.2.44SE6 to 12.2.46 or 12.2.5x or 15.0.x...the upgrade it's ok the swithc boot..and the configuraiton is same.. but the giga 0/1 and 0/2 on 2960 not bring up....and the better the interface on 3750 are up.
View 3 Replies View RelatedI'm trying to configure VXLAN on 1000v but it not working between two esx.
As I followed the troubleshooting guide on Cisco's website I discovered the following error: Can't get uplink MTU: 4681 Here is the output of the "vemcmd show vxlan-stats ltl 50" command. Port LTL 50 is the VM's port.
vemcmd show vxlan-stats ltl 50
VXLAN Port Stats for LTL 50
Unicast Encapsulations: 0
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I've set mtu to 9000 on the UPLINK profile (port-profile) and enabled jumbo frames support on the upstream switch.
Here is the output of show run: [URL]
I implemented the 3560E switch, this one have two Giga bit ethernet/10-Gigabit Ethernet module slots. I used the Twin Gig Converter Modules and one SFP. All configuration was applied in the Ten Giga bit, however the interface giga bit ethernet is UP UP state and the Ten giga down down.
View 3 Replies View RelatedI have configured about 20 of these switches now, and notice in the port listings a TE1/1//1 TE1/1/2 and GI1/1/1 GI1/1/2 uplink port. There are only two uplink SFP+ ports. I now have a reason to install with a 1Gb uplink to the Core. I am using a GLC-LH module at each end. I did configure the TE1/1/1 port for the uplink. Does not work though..Do I need to configure the two GI1/1/1 and 1/1/2 ports for uplink, remove the TE configuration for the uplink to work? Using the UNIVERSAL code with a LANBase license.
View 2 Replies View RelatedI was trying to uplink a switch today on a 1500m run of SMF. I have a 6509 core switch with a 16 port GBIC module. On that end I have a WS-G5486-LX with a 3m SC to LC patch cable.On the other end I have a 3750G with a GLC-LH-SM SFP. I have checked my fiber path and it seems good, (by sight, did not have an OTDR avialable).I can't get the link up at all. Tried swapping Tx Rx at one end, Tried different transceivers. Tried different patch cables. Nothing worked. At about the mid-point of my fiber run the cable passes through another network closet with a core switch for a separate network. If I break my fiber path there and try to connect in either direction it works. The only differences are the length of the fiber run and that the core switch on the other network has a CLC-LX-SM SFP.Is it the distance? Or is there some issue connecting a GLC-LH-SM to a WS-G5486-LX?
View 7 Replies View Relatedwe have several uplink ports on a verity of cisco switches connecting to the nexus 7000, recording CRC errors.most are trunked ports with the following configuration. [code]
View 2 Replies View Relatedour network is spread over 15 floors and each floor we have 5-6 switches. we are planning to purchase cat3750-x 24 ps poe with C3KX-NM-10G network modules. Each floor has two up links to the core switch with single mode fiber and other being the multimode.Suppose if we are purchasing 75 switches do we have to purchase 75 C3KX-NM-10 G modules.? or can we limit our purchase with 15 C3KX-NM-10G sothat two uplinks from each floor can be made? since network modules are optional cost factor is invovled. Or any issue with stacking ? the SFPs will be LR and LRM MODULES.looking for an answer ? whether the new usb type console cable comes bundled with cat350x or shall we have to order separately?
View 7 Replies View RelatedI'm currently trying to diagnose a re-occuring problem with output drops on an uplink interface to a SonicWALL firewall, between 1am - 3am every night we receive alerts that the output drops (discards) counter has incremented.
This time frame happens to be when several network based backups are running so that's probably to blame for the added traffic count but I'm trying to narrow down what's actually dropping the traffic.
The switch hardware is a WS-C3750X-48 running C3750E-UNIVERSALK9-M , 12.2 (55) SE3.
My current thinking is that the output drops are indicative of congestion on the link to the SonicWALL indicating that the SonicWALL unit is incapable of processing the traffic flow fast enough thus causing the congestion and ultimately the output drops on the Gi2/0/48 interface.
According to SonicWALL the unit is rated at 1.5Gbps throughput without UTM services (pure stateful), and no UTM services are enabled.
I've posted a section of the show interface command:
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
[Code].....
We have a remote site that is using 3750X switches as layer 2 switches back to our home site. The uplink port is showing dropped packets but the utilization on the link is never about 10%. We have a 100Mb circuit to this site. Our speed tests and iperf tests are not showing any issues that we can see. However the port is still droping packets. It is not dropping at a high rate but they are dropping.
switch#sh platform port-asic stats drop gi1/1/4
Interface Gi1/1/4 TxQueue Drop Statistics Queue 0 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 1 Weight 0 Frames 52876 Weight 1 Frames 2 Weight 2 Frames 0 Queue 2 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 3 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 1330874 Queue 4 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 5 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 6 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 7 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0switch#
Is there a way to capture these dropped packets to see what they are? We do have VOIP phones at the site and are using Qos.
we have just purchased a few 3750x's that we intend to add to our 3750g stacks. We've purchased the 10gb uplink modules, C3kx-nm-10gt, but when they are installed they are not appearing in the switches web gui nor can you configure them correctly. If we upgrade a 3750x to 15.0.1 they seem to work fine. All of our current 3750g's are running 12.2(58)SE2 IPBASE so we don't really want to have to upgrade them all to 15.0.1
Are we missing something or do the 10gb modules only work properly with ios 15.0.1?
I know in the past on earlier models of the supervisors that you couldn't use all eight uplink ports(4 on each supervisor) simultaneously when you have two supervisors on the chassis. Is this the same case for the 10Gb uplinks on the supervisor 7-E on the 4500 chassis? I tried doing my research but couldn't find an answer.
View 3 Replies View RelatedI need a L2 switch with dual AC power supply and RJ45 uplink The optin I got was WS-C3560X-48T-L + C3KX-PWR-350WAC , but the problem is with uplink . There is no RJ45 1G uplink , there is only option for SFP uplink The another option was WS-C2960G-48TC-L , but there is no dual AC power supply option a good model ( Dual AC power supply , RJ 45 uplink ports (Gig) , with 48 port 100/1000 UTP)
View 3 Replies View RelatedI have a Nexus 5500 which is the core of our network and we have access layer switches uplinked to it. I know by default the qos markings will be trusted.
1. On a trunk uplink from an access layer switch to the Nexus, I have "mls qos trust dscp". Will the DSCP marking be preserved when it reaches the Nexus?
2. How do I do prioritization of voice traffic on an uplink on Nexus based on DSCP EF?
I need 10gigbit uplink for this switch. What are the other devices that i need order along with this device.And what is the diff between X2-10GB-LR= and CVR-X2-SFP.if i take CVR-X2-SFP, in future how can i upgrade from one gig to 10 gig?for current use i need 10gig support required. so what are all the other devices that i need to order.Fiber multimode and distance 15Mt only.
View 2 Replies View RelatedDo I need the Universal image to perform stftp on a 3750 or 3750-X?
View 8 Replies View RelatedWhat the little green/red light is on the back upper left corner of the switch is? It inside a little mesh and I belive it says vt_fail next to it.
Had water get on our switch over the weekend and this guy goes red when I fire off on demand diagnostic, but not relevant errors in any of the logs. Haven't gotten to the point where I am putting data back on the switch yet.
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
View 1 Replies View RelatedI have a problem to solve in our data center, see attached drawing. HW: Our core switches consists of two stacked C3750 with ip routing. What I want to do is probably simple but I haven't been able to figure out the best method.
VLAN10 and VLAN20 should not be able to communicate with each other. (ACLs?)VLAN10 will have it's own default route/firewall. Both VLAN10 and VLAN20 should be able to send server backups to server in VLAN30. All 3 V LANs come in on a trunk from a pair of stacked C2960-S. I need it to be able to scale if we have 50 VLANs for instance, hopefully without long complicated ACLs. I've been considering VRF's, PBR but can't decide what's the simplest solution to this problem. I have never done this before so I would prefer to start off on the right foot.
I just completed installation of a stacked pair of 3850s in my datacenter. While I was installing them, I noticed that the lights on ports 1-8 on one of the switches were on solid even though there were no cables connected to that switch. I don't see anything in the logs or anywhere else in the CLI that indicate a problem, however the lights remain on. This only happens on switch 1, not switch 2. Once I plugged the cable into port 1, it flashes normally with activity, but 2-8 remain on solid even though nothing is connected to them.
Before I put the switches in place, I had configured them at my desk with the console connection, and those lights were not lit up.
The indicators on the front of both switches are set in STAT mode. I thought initially I had hit the button and flipped it to a different mode, but that is not the case.
I have (2) Sup 32 configured in a 6509 chassis. I have 1 power supply plugged into the wall and 1 power supply that is not plugged into anything but it is in the chassis and has green light to show that it has been recognized.
My problem is the "system light" on both sup32 remains amber and does not turn green. I have done show modules and sh diagnostics and sh power and everything checks out OK. Also there is an amber light on "active" on the 2nd Sup32 which I am assuming means that it is in standby mode so that would be correct.
Q: My question is could it be the power supply that is not plugged into anything causing the "system light" to stay amber and not turn green?
Q: Will this amber system light on the Sup32 stop the 6509 from running as normal?
I just managed to get my hands on a CISCO 871 router but when I turn it on I have some errors:
*** Data Access Exception ***
PC = 0xfff3026c, Vector = 0x300, SP = 0x8000498c
The first time I powered on the router it booted, then I turn it off and since then I have this errors every time it boots up. If someone can give some info about the errors so I can try to remediate.
[Code]....
I'm looking at adding a Cisco 3750-X switch running c3750e-universalk9-mz.122-55.SE1 (IP base license) into a stack of 3750-G switches running c3750-ipbasek9-mz.122-55.SE1.bin Given that the version and feature sets are the same I don't forsee any compatibility issues. Would there be any reason why a universal image wouldn't stack correctly with other switches running the single .bin file?
View 9 Replies View RelatedFor the past few days I've been attempting to configure a data T1 on a Cisco 1760, but I'm stuck at:
Serial0/0 <our ip address> YES NVRAM up down
To provide a bit of background. This router used to be configured with a T1 via Frame-Relay; which worked fine. Now we recently change offices and providers, and the provider did not offer any information as to which encapsulation type to use, and if Frame-Relay which DLCI to use, etc.
Now I've been trying to setup the T1 connection and testing various settings such as encapsulation HDLC and PPP, but no luck. I also played around with the line codes and framing; which resulted in the following framing sf int down, line prot down, framing esf int up, line prot down. Regardless no luck.
Now I've been following several guides and examples mainly the following: [URL] In this guide they make mention of a WIC-1DSU-T1-V2, but as you can see in the show diag snippet at the bottom; we have a WIC-1DSU-T1 version 1.5. I dont' know if this poses a problem for us.
Throughout the entire process I've seen a few irregularities for example:
1. Router(config-if)#service-module t1 cablelength short 110ft
^
% Invalid input detected at '^' marker.
The IOS doesn't recognize any command with service module t1 ca , and the only recognized command with C is clock.
2. If I enter the following list of commands under the serial interface:
!
interface Serial0/0
ip address 10.0.0.51 255.0.0.0
service-module t1 framing esf
service-module t1 linecode b8zs
service-module t1 timeslots 1-12 speed 64
[code]...
And I do a sh run all I get is the following:
!
interface Serial0/0
ip address 10.0.0.51 255.0.0.0
load-interval 30
!
Although i can do a show service-module s0/0 I can see all of the configured parameters (see below)
Module type is T1/fractional
Hardware revision is 0.128, Software revision is 0.2,
Image checksum is 0x73D70058, Protocol revision is 0.1
Receiver has no alarms.
Framing is ESF, Line Code is B8ZS, Current clock source is line,
Fraction has 24 timeslots (64 Kbits/sec each), Net bandwidth is 1536 Kbits/sec.
Last module self-test (done at startup): Passed
[code]...