Does g0/1 port (dual purpose port but set to use sfp) support udld? If yes, what's the command to enable it? I have it connected with a 3750v2 switch. On the switch I have udld enabled.
View 2 RepliesI'm trying to implement the UDLD protocol (Cisco-compatible), but face some problems. There is no enough information for implementing this protocol neither in RFC 5171 [URL] nor on [URL] How can I get a more detailed information regarding protocol state machines and timers?
View 2 Replies View RelatedI have the following problem with
Situation:
- 2x 3750G-12S Distribution-Switches (DS) and several 3560/2960 Access-Switches (AS)
- redundant Fiber optic uplinks between AS and DS
- Cross-Stack Etherchannel config on all uplinks
- UDLD aggressive mode configured on all uplinks
Problem:
- when I reload the DS and the switch comes up again, I've lost the connection with several (not all) AS
- looking at the AS log I found the following error message: "%UDLD-4-UDLD_PORT_DISABLED: UDLD disabled interface Gi0/1, aggressive mode failure detected"
Cause:
- in the log of the AS I don't see intf Gi0/1 go down during the reload of the DS
- this means the DS didn't shuts down all its ports during the reload
- but this also means that UDLD on AS didn't know about DS reload, and therefore didn't resets counters
Workaroud/Solution
- I'm now configuring errdisable recovery on all AS
So I'm forced to configure errdisable recovery, even if I don't want.
we're running 4 c4500 Switches at 2 sites connected to each other via Layer-2 crypto boxes and VPLS in a point-to-multipoint configuration which ist completely transparent (it's more or less like connecting them via a Hub - every switch sees the other 3 ones as neighbors). Our basic configs have udld globally enabled in aggressive mode. I wanted to disable that for the interfaces (routed ports) to the crypto boxes, because I don't want them in ErrDisabled for 5 minutes if there are connectivity problems in the VPLS-cloud (every switch also had 3 UDLD neighbors because of the P2MP configuration). In if-config mode I could do this simply with "udld port disable", but I thougt it would be better to run normal mode (not aggressive) to have the chance to use the UDLD show-commands. So I configured "udld port" for the affected interfaces.
interface GigabitEthernet1/2
udld port
!
[Code].....
I have a problem between two switches with ether channel configured:
Model number : WS-C2960S-24TS-L
System image file is "flash:/c2960s-universalk9-mz.122-58.SE2/c2960s-universalk9-mz.122-58.SE2.bin"
Gi1/0/23 ETH-CH_1_SW-EDGE01 err-disabled trunk auto auto 10/100/1000BaseTX
Gi1/0/24 ETH-CH_2_SW-EDGE01 connected trunk a-full a-1000 10/100/1000BaseTX
Po1 Trunk_SW-EDGE01 connected trunk a-full a-1000
[code]...
I already change the wire without success, and already restart sw-edge02. With "u dld port disable" the link is working correctly.
I have two another switches working with SFP Cable:
Gi0/25 ETH-CH_1_SW-CORE02 connected trunk a-full a-1000 1000BaseCX SFP Cable
Gi0/27 ETH-CH_2_SW-CORE02 connected trunk a-full a-1000 1000BaseCX SFP Cable
Po1 Trunk_SW-CORE02 connected trunk a-full a-1000
Model number : WS-C3560G-24TS-S
System image file is "flash:c3560-ipbase-mz.122-50.SE1/c3560-ipbase-mz.122-50.SE1.bin"
I'm working on a lab where I am trying to load a new IOS onto a 3750V2 switch.
Here are the details.
Network. /24
Switch IP 192.168.1.1
PC IP 192.168.1.3
Switch1.1#show runBuilding configuration. Current configuration : 3954 bytes!version 12.2no service padservice timestamps debug datetime msecservice timestamps log datetime msecno service password-
[Code].....
In a lab environment, I have a stack of two 3750v2-48ts switches. I upgraded the stack from 15.0(1)SE2 to 15.0(1)SE3 using archive download-sw.
Switch 1 in the stack reloaded and came back with the new image.
Switch 2 appears to be dead. No console out put. When power is applied, the SYST LED blinks 22 times, then stops. I've held in the mode button for up to 60 seconds, held in mode while applying power, removed the stack cables and repeated...there's not a whole lot else I can think of to do at this point.
I would like to confirm if Cisco 3750 and 3750v2 can work in a stack? My Cisco 3750 is working on 12.2(37)se while 3750v2 is working on 12.2(50r)se.
I tried to configure the above on a same stack but seem to have compatibility issue and fail to work.
I've been reading the documentation for the new 3750v2 switch, and I'm wondering is the IPBase license supports FULL OSPF. The product sheet notes that it supports OSPF in the IPBase license, but then further down the page it notes that for advanced routing functions (EIGRP,OSPF) you need the IPServices license. Are there any limitations to the OSPF process on a 3750v2 with the IPBase license?
View 3 Replies View RelatedAccording to documentation Cisco RPS 675 should have support for Cisco 3750v2 switch(WS-C3750V2-48PS).What kind of cable should be used to connect them?Cisco RPS has 16 pins and 3750v2 has 22 pins.I could not find that type of cable,
View 2 Replies View RelatedMy old switch software version is c3750-ipbase-mz.122-35.SE5 and model number is WS-C3750-48TS-S and my new switch Software version is c3750-ipservicesk9-mz.122-50.SE5.bin and model number is WS-C3750V2 . I want a compatible (prefer same) version of IOS which works on both the switches as both the switch will be in a stack..
View 4 Replies View RelatedI recently installed DHCP snooping on a 3750v2 switch (Version 12.2(55)SE4) and configured the uplink(Po2) as a trusted port. The problem is that clients cannot receive an IP address. When I disable DHCP snooping it is working properly. DHCP snooping is configured correctly but I don't have an idea how to resolve it. [code]I tested the solution on the same kind of hardware switch and firmware and it worked out fine. What is causing the clients not to receive an IP address from the DHCP server?
View 10 Replies View RelatedDoes the new 4500X series will support a per port MTU?
View 2 Replies View RelatedA new Cisco 3750V2 (WS-C3750V2-48PS-S) running IOS 'c3750-ipbasek9-mz.122-50.SE5.bin' waspurchased to add to a stack of 3 Cisco 3750 (WS- C3750- 48PS-S) switches. The IOS on the stacked switches is 'c3750-ipbase-mz.122-25.SEB4.bin'.I loaded this IOS on to the new Cisco 3750V2 and deleted its original IOS. Boot up failed with error 'hardware not supported by firmware'. I am now trying to follow the recovery procedure but the I can only initialise the flash (flash_init) and there is no 'boot_helper' command to load the boot helper files. There is no option to rum 'copy xmodem' so I cannot upload the original IOS image via xmodem on hyperterminal.
View 7 Replies View RelatedWe're going to be switching some of our gear from Foundry to Cisco, and were looking at the WS-C2960S-48TS-L. We currently have 3 different VLAN's, and I wanted to have 1 uplink back to our firewall (ASA 5550) and then let the firewall do the routing between the subnets. I realize that 1 link will carry the traffic twice then, but is that possibly with those switches to have all three vlans assigned to one port and then just let the firewall do the routing between the vlans or would I need to have 3 uplink ports back to the 5550?
View 1 Replies View RelatedNexus 5500 support auto negotiation on 1gig sfp port? There is an end device that only support auto negotiation and cannot be manually set speed/duplex.
View 0 Replies View RelatedDoes 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?
View 7 Replies View RelatedDoes Catalyst 3550 switch support inter vlan routing ?
View 12 Replies View RelatedCan nexus 5010 supports inter v lan routing , as there is no core switch and router available in current network.
View 2 Replies View RelatedDoes the Model "WS-C2960-24PC-L" Supports IP Routing or not?
View 9 Replies View RelatedOn the supervisor card of a cisco 6500 series, according to the following link, [URL] it only has 2 uplink ports on the card. Would I be correct in assuming that I only have those to ports that I can configure IP addresses on?
The cisco that is being devlivere is coming with a 48 port switch and 24 port fibre switch. Could I change any of those ports into a router port and configure IP addresses on those?
The supervisor card is a ws-sup-720-3b the 48 port switch is a ws-x6748-ge-tx the 24 port fibre switch is ws-x6724-sfp
I'm trying to enable port security on several 4507R's. When I try to configure a range of ports the switch will randomly put 1 or 2 in err-disable. It's different every time I apply the config to the same group of ports. However if I do them one at a time it seems to work. But I really don't want to configure 6 fully populated switches one port at a time. We also have a lot of 3750's and they gave me no problem using a port range. [code]
View 4 Replies View RelatedWe just installed a hosted VOIP system using Cisco 7900 series IP phones. We are having a strange issue with a few computers where they pull DHCP information from our VOIP provider's DHCP server on the Internet and not our LAN DHCP server.
The switchports areconfigured as: switchport mode access
My rationale behind this is that the phones would use CDP to get their VLAN info from the providers Cisco router and the PCs would just ride on the default VLAN. But this is not the case. Computers randomly keep getting DHCP info from the provider's router. Do I have to use voice vlan x and make the switchports trunks?
I have an all gigE 3560. I don't use the management FE0 port on the back. I was thinking to use that for a 100Mbps WAN connection.
Seems to work just fine when I plugged in an test. But I am not routing across that link yet as I still need to setup the far end.
Is there any reason this would not work? I would like to not burn a gig port if the max throughput of the circuit is 100Mbps.
I have a 3750g connected to a "core" switch stack of 7 other 3750g's via 2 GigE ports in a trunk. This is currently in a switchport mode access port- channel so only the default vlan data is sent over. Now we have a need due to physical location of these switches, to allow vlan20 (DMZ) from this 3750g to the switch stack. I will configure a few ports on the switch stack for vlan20 and they need to be able to talk to the stand alone 3750g.To do this I will change the port channel on both endpoints to
-switchport trunk ecapsulation dot1q
-switchport mode dynamic desirable
also making the appropriate change on the interfaces belonging to this trunk.My question is, now that its a trunk port that carries multiple VLANs, how much is the bandwidth reduced on that 2gbps link?I have a very active VLAN (10) on the stand alone switch, but on the core I'm not going to be assigning VLAN 10 to any ports. So does traffic from VLAN10 even come across the trunk (wasting bandwidth) if no ports on the core side are assigned to it? I really just need vlan 1 and 20 (for now).
is it possible to shutdown a specific port on my 3750x and monitor this port at the same time .for example , im dealing with a mac authenticated network using port security , i want to shut down all the ports that are not used at the moment , however , if some one gets connected to the one of the shutdown ports i want to know the mac address of the user or atleast to know that i have someone who is just plugged in to the one of the shutdowned ports .
View 4 Replies View RelatedI'm fairly new to Cisco products am in the process of developing my network knowledge on a deeper level. I have a 3825 with a HWIC-4ESW and I'm struggling to fully understand how the two "see" each other. I've setup a V LAN with a layer 3 address on the HWIC and added the switch ports to it. This seemed to allow devices connected to the switch ports to talk to the built-in router ports. I thought this was all making sense until i applied an access-list to the router port. It's a simple ACL i'm just using for testing and the only thing it does is blocks telnet from anywhere. I know the ACL is setup properly because if I connect a device directly to the router port i cannot telnet to the port. However, if i connect a device to one of the switch ports, i am able to telnet to the router port successfully.
It seems that I'm missing something with how traffic flows from the switch port to the router ports and how the two "see" each other.
I have Cisco 800 series (888w) with BRI-ISDN port. Is there any way to change the usage of ISDN port to normal RJ45 port?I want to use this SOHO router to sharing connection.
View 0 Replies View RelatedI was looking for a way to connect an AUX port from a 1700 router to a 6500 switch module console port, to see the output of the Switch's on the 1700 router, in case there is a network downtime, I could see what's going on in the switch, what cable should I use ? Also, is there is any kind of documentation for this type of config what have I seen is very few info.
View 2 Replies View RelatedCoincidentally when i tried to configure router 877 as an adsl router i found that a vlan configuration is included. my question is what is the benefit of using vlans in router ??? i studied that we use it in switches for the purpose of network enhancment from broadcasts and netwrok segmentation. why we use vlans in routers ?
View 9 Replies View RelatedDoes the 4500 support VSS (Virtual Switching System) ? On the official product overview page it says: 1.6 Terabits capacity with Virtual Switching System (hardware-ready)What means Hardware ready ? Does it mean that it supports VSS in the same manner as the 6500 ? The reason I'm asking this question is that I didn't find any info on the Internet about this. We would like to upgrade our network by interconnecting the 2 sites with Layer 2 redundant links (Layer 2 extension), but I'd like to use the both links in a load-balancing manner, which can be a real pain in the *** with STP. The choice is between 4500 and 3750 stackable core switches. The 6500s are very expensive.
View 6 Replies View RelatedDoes this Router Support SIP Forwarding?
View 1 Replies View Relatedwhen the VSS will be supported on Catalyst Supervisor Engine 7-E or 7-LE and on Catalyst 4500-X?And does VSS will require Enterprise license ? or the IP base will be enaugh?
View 7 Replies View Related