Cisco Switching/Routing :: Catalyst 3650 Doesn't Pass Voice?
May 22, 2013
|_voip PBX___|-----|__3650___|------fiber-------------|__3650_____|------|_voipphone__| I have a case where voipphone is registered on the voippbx but peaple on both end can't hear each other . No ACL on both 3650 , no firewalls between them , distance is about 2 miles . I tried to make telnet x.x.x.x 1720 or 1719 or 1721 (h323 ports) to opposite switch -connection refused . How can test if ports are open on the 3650 ? Is it coorect If I create allowing acl and apply it on both 3650 on the interfaces connected one switch to voippbx "IN" , second switch on the interf connected to voipphone "IN" ?
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Aug 3, 2011
Configuring a network with Rapid Spanning Tree Protocol. There's a combination of Cisco 3650s, 2950 and 2960 switches. It is a flat Layer 2 network with a single VLAN. CLI configuration?
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Sep 20, 2012
I have a question regarding fabric storage and cisco catalyst switch 3650.My plan is connecta a esxi server to a nexus switch and then to a san storage. I want add a new switch to have a redundant link between esxi and the storage.Can I use a cisco catalyst 3650 with a fiber conecction to connect the HBA esxi server card to 3650 sw and the SAN storage to the 3650 sw ?
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Sep 4, 2012
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?
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May 14, 2012
I am trying to write an extended ACL for the voice vlan.My scenario is the following:I have two PBXs with two Catalyst 4505 L3 switches.The C4505 are connected trough a trunk link.I have a VTP domain configured.
Voice VLANs are Vlan 100 and Vlan 101 with networks 10.2.0.0/16 and 10.4.0.0/16 Voip telephones are communicating between them self and everything is working fine.I want to secure both voice VLANs with an ACL to allow only couple of IPs to administer the phones.The PCs are connected trough a integrated switch via VOIP telephone.Here is the sample configuration of the dhcp pool for the PC VLAN:
ip dhcp pool PCs
network 10.1.0.0 255.255.0.0
default-router 10.1.1.1
dns-server 10.10.10.1
option 43 hex 010a.5369.656d.656e.7300.0000.0204.0000.0064.0000.0000.00ff
I had to implement the 43 hex option because the PCs did not get the ip from the DHCP because of the vendor specific information.The thing that worries me is will the DHCP forward the ACKs for the PCs if I implement this test ACL:
ip access-list extended VLAN100
permit ip 10.2.0.0 0.0.255.255 10.4.0.0 0.0.255.255
permit ip 10.4.0.0 0.0.255.255 10.2.0.0 0.0.255.255
permit ip 192.168.2.0 0.0.0.255 10.2.0.0 0.0.255.255
permit ip 192.168.2.0 0.0.0.255 10.4.0.0 0.0.255.255
permit udp host 0.0.0.0 eq bootpc host 255.255.255.255 eq bootps (this I am not sure do I need)
permit udp host 255.255.255.255 eq bootps host 0.0.0.0 eq bootpc (also this)
deny ip any any
I only want to allow the network 192.168.2.0/24 and maybe some other hosts to access the web based http gui to adiminister the IP phones.All PCs are connected trough the VOIP terminals. I do not want to deny the traffic to PCs.
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Oct 26, 2011
We have a Cisco Catalyst 4506 running: "Cisco IOS Software, Catalyst 4000 L3 Switch Software (cat4000-I9K91S-M), Version 12.2(25)EWA14, RELEASE SOFTWARE (fc1)" I have configured the default gateway as: ip default-gateway X.Y.116.65, However, when I do, "show ip route", it only shows the 3 connected networks and states "Gateway of last resort is not set". The Command "ip classless" is not set. I read on some blogs that this might explain the issue. However, when I go into config mode (config t), I get the following output.
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Nov 1, 2011
the problem shows an error in a switch catalyst 2900XL - its a 2924 -, i was copying the image of the ios via xmodem and before finished the the power energy in the facility shuts down, when the energy supply returns the switch get power energy normally but the flash memory doesn't initialized and the loader stuck when i try to initializy the flash or reset
this is the error that shows me:
switch: flash_init
Initializing Flash...
flashfs[0]: 21 files, 2 directories
[Code]....
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Mar 14, 2013
I have created a PBR in 3650 switch to route traffic from a specific IP address to a specific next hop or IP address(Router)
ROM: Bootstrap program is C3560 boot loader
BOOTLDR: C3560 Boot Loader (C3560-HBOOT-M) Version 12.2(44)SE5, RELEASE SOFTWARE (fc1)
SW1 uptime is 6 weeks, 2 days, 16 minutes
System returned to ROM by power-on
[Code]....
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Mar 11, 2012
We have a 3750 and a 3560 defined as a layer 2 switches. One gig port on each switch is trunked to layer 3 switches, which containall the VLAN definitions etc. The other gig port on the 3650 and 3750 switches are trunked together to provide an alternative path in the event of a failure.
We have added a new device to the 3750 and given it a VLAN 9, and the VLAN added to allowable VLANS on both trunk ports between the layer 3 and layer 2 devices ie:
switch port trunk allowed vlan 9,10,20,30,40,50,60,90,200,202,206,211,212,700.
From either of the 3750 or the 3560 we can ping any device on any VLAN on any switch in this group with exception ofVLAN 9. We can however ping the ip address of VLAN 9 on the layer three switches.
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Sep 16, 2012
I have a small network using a 24 port 3750 switch. I need to add five computers in another room and only have one Cat 6 cable running there and no room left on the 3750. I got a 3650 to put in the new room with the new computers. The problem is, whenever I plug the new switch into the 3750, it shuts down the port and gives me an err-disable. I can do a shut/no shut and re-enable the port. I searched the web and read about trunking and clusters. I'm not sure which, if either, is appropriate. I see various documentation that shows you can put one switch behind the other. But nothing tells me the configuration which will allow it.
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Nov 22, 2011
Does 3650-X IP Base support Static Load Balancing or i should upgrade to ip service SW ?
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Dec 22, 2012
I have set up a scenario for a small business and have some questions about how to manage the access between the VLANs. Is there is a better / another way to do it. See the attached picture for the topology / info.
My question is:
My switches is set up with x numbers of VLANs and a routed port (no switch port) to the ASA for internet connectivity. How is the best (or only??) way to manage the access between the VLANs? Is it ACL's on the switch?
And by "managing access" I mean VLAN 50 (public WiFi) only have access to the internet, only management servers have access to management VLAN, Client VLAN only have RDP access to server VLAN and so on. Is there any way to do this in the ASA (or add another (gigabit) router to the topology)) or it the only way to have lots of ACL's on the switch itself? I have thought about "router on a stick", but then I imagine there will be a bottleneck between the switch and the ASA?
(Equipment is 2 x 3650G, ASA5505, AP1252 - see attached file).
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May 18, 2013
I have a question about speed negotiation process between interfaces. I have 3650X Sw and 2960S-48port. All ports of two are GigabitEthernet, however the link between them is only 100Mb/s, Full duplex. I try to set the speed 1000 Mb/s manually in the interface then the interface never up. Its status is down/down. I must set back to speed auto. I show interface Gigabit0/24 in Sw 3650-X and figure out that there are many output drop (over 600000). I clear counter then after two days the output drop is over 70000. This link is trunk link between two switches, all ports of access SW are Gigabit and connect to PC. First, I thinks the 3650X is throttled somewhere in output direction of trunk link. But there is another trunk link (Gi0/23) to another 2960S-48port and no output drop number in this interface. This Giga 0/23 speed is 1000 Mb/s (auto speed, auto duplex)
Does any outside things impact the speed negotiation process between 2 interfaces? And output drop number may caused by abnormal speed between two Gigabit interface?
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May 2, 2011
I setup the ikev1 client and can connect but I can't pass traffic either way. I have tried icmp, port 80, smb etc... here is my config: ........
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Sep 13, 2011
Why aren't the fa ports that i assign to a voice vlan showing up when i issue show vlan?
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Aug 6, 2011
Just setup a site to site vpn between 2 ASA 5520 Firewalls in two locations but vpn doesn't work even though i see phase 2 completed on the logs. I can't ping across the LANs.
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May 24, 2012
I'm having some trouble with my P660RU-T1 configuration. I have recently set up a linux SFTP server at my home and am trying to access it via my public ip (eg 1.1.1.1), the problem is this public IP goes to the router which doesnt pass on the requests to the server.Last summer when i first messed around with this i had no problems with using the public ip to access the server, its only recently.
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Oct 31, 2012
How can I configure Cisco 200 (SG200-08P) to learn Voice VLAN and CoS/DSCP from upstreamCatalyst 2960?
The Cat 2960 is today used together with LLDP-MED to announce config to Aastra IP Telephones. In some cases I need to use a small switch inbetween and plan to use the Cisco SG200-08P for this. However, I would like to avoid manual config of the Cisco 200 switch.
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Oct 25, 2011
We're looking at implementing a new phone system which will use voice over ip. Currently we have a mixture of Cisco 3750 and Cisco 3550 switches which don't support power over ethernet. Its been suggested we could continue using the current switches and power the new phones using power adapters.
Int terms of implementing qos (we don't have any at the moment) for the voice will a Cisco 3550 be OK and will having a mixture of different models using 3550 and 3750 pose any challenges with the qos policy for the voice. I believe there are differences in that the Cisco 3550 doesn't support srr-queues but having little experience with qos I'm not sure what impact this will have if any?
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Dec 4, 2012
asa 5505 do not pass traffic as a patch cord, how to make it pass traffic? [code]
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Feb 19, 2012
WAN1 <-> LAN traffic
WAN2 <-> LAN traffic
WAN1 <-> WAN2 traffic?
Say, it is set DISABLED, what is / isn't blocked?
It reads: Multicast Pass Through IP Multicasting occurs when a single data transmission is sent to multiple recipients at the same time. Using this feature, the Router allows IP multicast packets to be forwarded to the appropriate computers.
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Apr 17, 2012
I've just started a CCNA course and my lack of knowledge has me a bit stuck. My network is comprised of Cisco components and I'm semi familiar with them just from reading and looking through options. I currently am using a Cisco ASA 5520 on my network and I am trying to join another network via one of the interfaces. My network is 192.168.0.0 255.255.0.0 and my inside interface is 192.168.1.1 255.255.0.0. I enabled a second interface using a static ip of 10.0.0.1 with a subnet of 255.255.255.128. Connected to that interface, I have a Fortigate firewall at 10.0.0.2 255.255.255.128. I can ping just fine from the Fortigate network to the 10.0.0.1 interface on the Cisco ASA 5520 network, but I can not ping the 10.0.0.1 interface (or anything past it) on the ASA 5520 from any computer on the Cisco network. I've read that ACL's and NAT have to be done as well as enabling traffic between interfaces with the same security levels. (both interfaces have security levels of 100 and the option is checked to allow traffic).
Note: each network has it's own internet connection. The connection is to share information on servers on both networks with each other.
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Nov 6, 2012
due to upcoming changes to our network I'd like to be able to pass vlans across the FE ports of a Cisco 1841 router.1 port would go to a managed switch and then to local devices on different VLANs.the 2nd port would go upstream to a Cisco 3825 at a different location which would then connect to the internet.due to monitoring behind the Cisco3825 we would like all NAT to occur on the 3825.
what I would like to happen is this example device connected to port 7 on managed switch gets an IP (10.0.7.10) from the Cisco 1841 in VLAN 7 (10.0.7.0/24).traffic from that device goes to the switch, then in f0/1 on the 1841 and out f0/0 still with the same IP info, no NAT occuring.traffic is received on the 3825 port 0/1 and then NAT occurs and out port 0/0 to the internet.
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Jan 10, 2012
I have a customer who has a Cisco 2821 router with software 2821/HSEC/K9 and they wish to upgrade to C2821-VSEC-SRST/K9.From my understanding they want to use the same router but install an IOS with the capabilites it has at the moment but with voice. [code]How do I go about pricing this up and what upgrade sku's will do this?I am not to worried about the memory.Is it just a simple ios upgrade as the srst licenses are on a trust basis?
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Oct 12, 2006
Had problems with voice quality on VoIP with 4500 series switches and the qos dbl feature (which gets enabled by the auto qos feature)?? I have had a couple of customer complaining about voice quality and our voice team spent a lot of time investigating; I had ruled out the network infrastructure because it was all QOS enabled. The voip people came up against a blank so I looked at the network once more and disbaled dbl with hope more than anything else. Mysteriously the voice quality issues the customer was having have now disappeared. Not sure whether a coincidence (though I have done this on two customers now) or something to with with dbl. There is nothing on this on cco.
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Dec 4, 2011
I'm using CISCO 3524 switch as access switch and trying to enable voice vlan in fast eth ports as below.
L3 vlans are created in core switches which is cisco 6509
vlan 1 - data vlan
vlan 2 - voice vlan
in cisco 3524
[code]....
if i use the above configs, the phone which is connected to interface fa0/1 is not taking ip from dhcp server. even it didn't work with static configs.while troubelshooting, i have configured as below and it's started working..
int fa0/1
switchport acces vlan 2
speed 100
duplex full.
in this case i can't use this port for data connectivity where as it's required for data too.
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Jul 31, 2012
I have cisco2811 and HWIC-1CE1T1-PRI in the main office are using to connect 10 branches ( 10 ISDN lines) for Data.
I have available channels in the used E1 so I can use them for voice using PVDM2-64 ?
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Apr 9, 2012
I have CME on Router 2800 series, and switch 2960 PoE connected to this router.On 2960 switch, there is existing 7945 IP Phone that already work properly and get IP 14.x.x.x from voice vlan 2.
Problem is when I add cisco 6921 IP Phone connect to 2960 switch, it get data vlan 10.x.x.x, not voice Vlan 14.x.x.x I have check CDP and it use CDP v2
Config on 2960:
interface GigabitEthernet1/0/34 <--- this is connected to IP Phone 7945
switchport mode access
switchport voice vlan 2
spanning-tree portfast
[code]....
With same config and condition on port 2960, why the IP Phone 6921 can't get voice vlan 14.x.x.x, whereas IP Phone 7945 can get voice vlan 14.x.x.x
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Nov 10, 2012
I have encountered a different issue. When I configure " switchport voice vlan 2" under f0/2 connected to ip phone, it does not have any effect.
Below is my set up:
Sw is cisco cat 3524 XL.
ip phone-------f0/2( vlan1)-----SW----f0/1---trunk------f0/0-CME-router+dhcp
|
f0/3( vlan2)
tftp server ( 201.201.201.3)
switch has two vlans:
vlan1 (data) 200.200.200.0/24
vlan 2 (voice) 201.201.201.0/24
Switch management int vlan 1 : 200.200.200.3
router
f0/0.1 200.200.200.1
f0/0.2 201.201.201.1
The trunk is working correctly. (code)
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Jan 4, 2012
Wireless Phone --> 881W router --> VPN --> ASA5510 --> LAN with CCM and Voice Gateway
Phone registers to CCM Internal calls work External calls connect but get no voice in either direction
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Mar 18, 2013
I have spent several days tearing my hair out trying to properly configure our small business switch (SG300-10p) for voice. The phones are a relatively new addition and will replace old POTS phones.Our network consists of a 1941 ISR router, the SG300-10P switch, a mac server (handing DHCP, DNS, AFP), 4 client desktops and 4 SGA525G2 IP phones. The router, server, desktops and phones all have their own connection to the switch and the second data ports on the back of the IP phones are not used. We do not have any unified comms devices for voice. Our VOIP solution is hosted by a local SIP provider, and each phone independently registers with the provider's SIP proxy over the internet.
Left almost to it’s own devices (or presumably flat, default settings on VLAN 1), this whole setup works just great. We can TFTP files, make and receive calls, and do all the usual XML stuff. Calls are crystal clear. Even the localisation and directory works. However, I’ve been told several times that to ensure good quality on VOIP calls during periods of busy traffic, I should set up some form of QoS. A Voice VLAN on the switch, I was told, is the best way to do this as it automagically gives priority to the whole voice VLAN over the normal data VLAN.
I have followed instructions in numerous manuals, articles and guides, and have managed to create the Voice VLAN, both manually and automatically (I can watch Smartport detect the phones and see the Auto Voice VLAN add the ports to the VLAN as I connect them). The trouble is, as soon as this happens, the phones lose connectivity with the rest of the network, including the DNS server and the router, and therefore the internet, causing them to lose registration with the SIP service.
I tried adding the server and router ports to the Voice VLAN and tweaking every possible combination of tagged, untagged, excluded, trunk, access, general and PVID settings I can think of (by the way, I have no idea what any of those mean). The switch is in Layer 2 mode, but adding the port connected to the router to all the VLANs does not result in internet connectivity to the phones. I have told the phones to tag frames with the VLAN ID and told them not to. I have tried upgrading firmware and I have rebooted the switch so many times I'm tired of those wretched little flashing lights.
Nothing seems to work. And so I am stuck with everything on VLAN 1. My most recent thought is that the 1941 needs to know about the Voice VLAN (I checked CDP and it knows about the switch), but I’m reluctant to start messing with the router config when this is our production network, at least without knowing what I'm doing. I don’t even know if QoS applies when a Voice VLAN is not set up and we're on VLAN 1, some articles say yes, others say no. And when it is set up right, how does that priority transfer to the router? I’ve looked in the router manual and config options and found something called 802.1Q, but I have no idea what it is, how it works or even if it applies to our situation. Can I forgo VLANs altogether and use QoS some other way, perhaps?I have googled enough to cobble together our setup in IOS up until now. Ideally, I would still like to be able to ssh or https into each device (as I do now) for management, and I’ve read about setting up a another VLAN for config, monitoring etc, but I guess that would mean routing between VLANs in Layer 3.
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Jun 4, 2013
If we configure a Voice and Data VLAn on a switch. And connect EX90 on voice VLAN and PCwith EX90 terminals. Than can we able to share a presentation or data with EX90 or not?
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Nov 9, 2011
i am facing a strange issue on cisco 2950 .IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA9, RELEASE SOFTWARE (fc1) suddenly my phone stopped working for DTMF tone, i mean when i dial a conference bridge lets say 6565 and then it ask for conference bridge code lets say 12345, it doesnt recognize the code and says code is invalid, SIP Proxy is Asterisk in this case.Currently my cisco switch port is configured for dual data + voice vlan, where DTMF dont work, sample config below [code]
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