Cisco Switching/Routing :: 3560E-24TD And IGMP In Layer 2 Environment

Apr 13, 2011

I have 3560e which doesn't appear to be passing igmp traffic to the upstream router
 
PC1 ----------- ASA ------------ PC2--------- 3560e ----------- 3825 -------------------- WAN --------------------- Router ------------- Server
 
My ASA runs SMR, has an igmp forward interface outside command on the inside and has a trunk port to the 3560e (V lans 32 & 48).PC2 is a test pc on the 3560e on vlan32. 3825 is my ISPs router on vlan32.
 
- if i try to access the stream from PC2 it works. 
- if i try to access the stream from PC1, i see the igmp join leave my ASA onto the 3560E (i've captured on the 3560e's link to the ASA). 

I've also captured on the ASA and i can see the igmp packet leave the outside interface but the join doesn't reach the 3825 (i've captured on the 3560e port facing the router and there is no join being forwarded).the switch is running in layer 2, 12.2(35r)SE1.
 
switch#sh ip igmp snooping querierVlan      IP Address               IGMP Version   Port---------Switch# 
Global IGMP Snooping configuration:------------------------IGMP snooping                : EnabledIGMPv3 snooping (minimal)    : Enabled Report suppression    : Enabled TCN solicit query    : Disabled TCN flood query count        : 2Robustness variable          : 2Last member query count      : 2Last member query interval   : 1000

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Cisco WAN :: C3750E-24TD-E Connecting Sites Using Multi-layer Switch

Jan 5, 2011

I'm thinking of connecting a branch office to the main office with just using multilayer switch. The sites will be connected using ethernet leased line, so I'm thinking of connecting it directly to the switch.
 
We're running eigrp on our network so the Multilayer switch will do the eigrp routing.Thinking of using C3750E-24TD-E (IP Services) as the multilayer switch. Can this work or do I still need a router to terminate the WAN?

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Cisco Switching/Routing :: Why Does Routing Work Without Declaring Vlan10 On 2960s-24td-l

Oct 28, 2012

I have recently split the voice vlan (10) from the data network (1), and am wondering why my catalysts and router do not require an interface Vlan10 statement.  In the past I used OpenBSD boxes to do the routing, and I first needed to configure vlan 10 on the interface before I could get inter-vlan communication to work.  With these Cisco devices it works, and I am wondering if it is because of VTP, for the fact that the ports maybe just pass all traffic, or is there some other explanation?  Below is the setup, and firmware is up-to-date on all of the devices.
 
When I plug a phone into the POE SGE, the phone turns on, obtains an address on the proper subnet, and conversations are clear (whereas without the ip nat inside on the new subnet the calls had a lot of static).  Possibly the reason that it works is because the phones properly create the tcp/ip packet, and it hops over the trunks and creates the states so that traffic routes back properly.  I will install wireshark to see exactly what is going on, but is there a simple explanation that I am overlooking?

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Cisco Switching/Routing :: GLC-GE-100FX Supported On WS-C2960S-24TD-L?

May 10, 2013

Does GLC-GE-100FX is supported on the WS-C2960S-24TD-L.  I don't see this switch listed under the compatibility matrix.URL
 
But the datasheet for the 2960S says this:
 
"The Cisco Catalyst 2960-S with SFP+ does not support the GLC-FE-100BX, GLC-FE-100FX, or GLC-FE-100LX." But it provides no reference for the GLC-GE-100FX The easy answer is, no the 2960S-24TD doesn't support it, any clarification if possible.

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Cisco Switching/Routing :: Sg300 And SLM2024 VLAN As Layer 2 And Layer 3 Switches Connection

Mar 18, 2012

I want to setup VLAN with the switches SG300 and SLM2024. What is the suggestion to connect these 2 switches. We have the Juniper net screen.

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Cisco Switching/Routing :: WS-C3560E-24TD IP SLA Responder And Conflict IP Addresses

Sep 8, 2012

I have a network topology which you can see on image. All routers are Cisco 3745 with IOS (C3745-ADVENTERPRISEK9-M), Version 12.4(12). SW1 is L3- switch Cisco Catalyst WS-C3560E-24TD  with IOS  (C3560E-UNIVERSALK9-M 12.2(58)SE2). [code] After that I have problem. When PC with OS Windows 7 begins to work in corporate network, it sees "coflict ip addresses" and doesn't work with network. I've used wireshark and seen, when the PC send arp request a SW1 always send arp reply (see attached file). I think problem with command "ip sla responder", but I haven't searched information about it and I want understand this is bug or normal functioning.

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Cisco Switching/Routing :: Can Stack 3750G-12S-S Switch With 3750E-24TD-S

Apr 22, 2012

Can we stack a 3750G-12S-S switch with a 3750-E-24TD-S switch?

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Cisco Switching/Routing :: C2960S-24TD Cannot See Switch Listed Under Compatibility Matrix

Nov 30, 2010

Does GLC-GE-100FX is supported on the WS-C2960S-24TD-L.  I don't see this switch listed under the compatibiilty matrix.URL,But the datasheet for the 2960S says this:"The Cisco Catalyst 2960-S with SFP+ does not support the GLC-FE-100BX, GLC-FE-100FX, or GLC-FE-100LX."But it provides no reference for the GLC-GE-100FX,The easy answer is, no the 2960S-24TD doesn't support it.

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Cisco Switching/Routing :: Can 3560E Be Configured To Do VRF

Feb 19, 2012

I have a few 3560E running Ver 12.2(50)se2.  Can these boxes be configured to run VRF.  I see a "sho IP VRF" option, but I do not see it available when under config t.  Do I need to do a IOS upgrade to be able to configure VRF?

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Cisco Switching/Routing :: 3560E - Can't Get Into ROMmon

Sep 2, 2010

I upgraded four 3560E, 12.2(44) to 12.2(55)SEThree 3560 works fine, the last one stops after 17-18 seconds with a solid green LED. I cant get into ROMmon, the switch doesn't boot up. its like "dead but still alive"
 
My TS:
1: Removed all SFPs.
2: Reset PSU and fan modules.
3: Replace PSU and fan modules.
4: Try to get into ROMmon.(pushing mode button and break seq.)
Startup LED:0-1 seconds:    SYST: Amber    RPS: Amber    STAT: Green    DUPLEX: Green    SPEED: Green
1-17 seconds    SYST: Blinking Green    RPS: OFF    STAT: OFF    DUPLEX: OFF    SPEED: OFF
18 s--> (only testet up to one hour)    SYST: Solid Green    RPS: OFF    STAT: OFF    DUPLEX: OFF    SPEED: OFF
 
A working 3560EStartup LED information. If I compare a working switch with the faulty switch I can see about 18 seconds into bootingSYST change very fast from green to amber and continues with booting,this doesnt happened on the faulty switch (solid green 18 seconds).   Pushing MODE button, doesn't get me in to ROMmon, this works for all the other switches.On a normal 3560 it takes around 40 seconds before I get in to ROMmon. With this faulty switch it stops after 18 seconds(solid green) and it doesnt respond.

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Cisco Switching/Routing :: 3560E - HSRP Gateway Failover And Routing Table

Nov 12, 2012

We have two Cisco 3560E layer 3 switches at the core of our network. The switches are configured as an HSRP pair and the clients on our network point to the HSRP address as their default gateway. So if CORE-A dies, then CORE-B will pick up the address and the default route for the clients will continue to be available.We also need to specify a few static routes on the core switch to allow us to get to specific networks. Is there a way to do this so that the routes failover in the same way that the default gateway does?

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Cisco Switching/Routing :: 861 Do Not Use IGMP Snooping?

Nov 21, 2011

I useing Cisco861  : C861-universalk9-mz.124-24.T3.bin on my Cisco861 the command "ip pim dense-mode","ip igmp static-group "command does not exist,
 
router(config)# ip p?
port-map    prefix-list
router(config)#

[Code]....

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Cisco Switching/Routing :: 3560E / Routing Between 2 VLans On Same Device?

Feb 19, 2012

I have a 3560E with 2 vlans that I want to route between.  one device with 2 vlans and route between.Interfaces are configured as such:

int g0/11
switchport mode access
switchport access vlan 10
 int g0/12
switchport mode access
switchport access vlan 11

[code]...
 
Laptops on each port with 10.10.10.2 and 10.10.11.2 configured on them.  I can ping from 10.10.10.2 to 10.10.11.1, but not to 10.10.11.2.What do I have to configure to be able to get the 2 laptops to talk to each other?

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Cisco Switching/Routing :: 3560E - PoE Switch With Routing Capabilities?

Apr 18, 2012

I am looking for a PoE switch with Routing capabilities (e.g osfp) something lower end than 3560E.

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Cisco Switching/Routing :: IGMP Snooping On 3560

Nov 28, 2012

how to configure igmp snooping on a 3560.
 
I have a pure L2 switching network and 2 hosts on the same vlan that want to communicate a protocol between each other using multicast packets.
 
I wanted to configure ip snooping only on this vlan and create a multicast group limited to only these 2 host ir order to make sure that the multicast traffic is only between both of them.
 
Since both are sender and receiver I´m not quite sure on how to configure this. In theory I also need to set an IP Multicast Address on the switch to where the hosts will send their multicast packets.
 
This is basically the network:
 
HOST_A---|SWITCH_A|==|SWITCH_B|---HOST_B

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Cisco Switching/Routing :: IGMP Snooping On The Cat3560?

Oct 10, 2012

In the following topology
 
R1(f0/0)------------(f0/1)SW1(f0/2)------------R2
  
R1 is configured as host (no ip routing) with ip igmp join 239.10.10.10 on fa0/0 and R2 with ip pim sparse-mode on f0/0. SW1 is a Catalyst 3560 running IOS 12.2(25)SEE4 working at Layer 2 only in this topology (VLAN 1).
 
I configured SW1 for igmp snooping:
 
ip igmp snooping
ip igmp snooping vlan 1
  
Basically, I can see 'snooped' muticast group (via IGMP reports sent by R1)
 
SW1#sh ip igmp snooping group
Vlan      Group             Type        Version     Port List
----------------------------------------------------------------
1         224.0.1.40        igmp        v2          Fa0/2
1         239.10.10.10      igmp        v2          Fa0/1, Fa0/2
SW1#
SW1#
SW1#

[code]....

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Cisco Switching/Routing :: 3560E Switch Went Down Due To A Power Surge

Jan 27, 2012

recently a Cisco 3560E switch went down due to a power surge. the switch is getting power but i am only seeing the below message continously. it is keep on rebooting. i try to reset to factory settings/ safe boot nothing worked. is there any way i can bring the switch up or it is hardware failure.Using driver version 1 for media type 2Base ethernet MAC Address: 00:23:33:af:1b:00Xmodem file system is available.The password-recovery mechanism is enabled.Using driver version 1 for media type 2Base ethernet MAC Address: 00:23:33:af:1b:00Xmodem file system is available.The password-recovery mechanism is enabled.

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Cisco Switching/Routing :: New Default Vlans On 3560e Switch

Nov 2, 2011

3945 is running c3900e-universalk9-mz.SPA.151-4.M2
3560e is running c3560e-universalk9-mz.150-1.SE
 
I've got brand new 3945's with onboard 16-port 3560e switches.  On the first power up I see that there are several new vlans added that appear to be default vlans..

vlan 2 name fst2
vlan 3 name fst3
vlan 4 name fst4
vlan 5 name fst5
vlan 6 name fst6
vlan 20 name VLAN0020
vlan 21 name VLAN0021
vlan 22 name VLAN0022
vlan 23 name VLAN0023
vlan 99 name VLAN0099
 
I deleted the vlan.dat and reloaded the switch but these vlans come back. What these vlans are intended for and is there a better way to get rid of them?  What does "fst" stand for? 

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Cisco Switching/Routing :: Packet Loss With LACP 3560E

Mar 11, 2013

I have a cisco 3560E switch setup with LACP, when using LACP i receive alot of packet loss / output drops
 
When a ping from the server behind LACP:
--- google.com ping statistics ---
44 packets transmitted, 39 received, 11% packet loss, time 42990ms
 
what would cause this packet loss with lacp?
 
some output from the switch:
 
Port-channel12 is up, line protocol is up (connected)
Hardware is EtherChannel, address is d0d0.fd58.7390 (bia d0d0.fd58.7390)
Description: LACP-PORT

[Code]....

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Cisco Switching/Routing :: 3560E Switch - Uplink Port

Jun 17, 2012

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.

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Cisco Switching/Routing :: IP Igmp Filter Command On 2960G?

Jun 21, 2012

I am unable to configure an interface using the "ip igmp filter <profile #>" command on a 2960G running 12.2(58)SE2. The switch allows me to create a profile using the "ip igmp profile <profile #>" global configuration command. It also lets me enable filtering with the global "ip igmp filter" command (which I didn't see in the documentation). But, the command is not accepted when configuring an interface. "ip igmp ?" does not even show "filter" as a valid auto-complete when in configure interface mode, and the command is rejected if I try to enter it.
 
I verified the command worked on a much earlier version of IOS, so it must have broken somewhere along the line. I'm wary of moving up to 15.0(1)SE. Is that a major IOS change?

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Cisco Switching/Routing :: IGMP On 6500 Versus 4500

Mar 11, 2012

I encountered a problem migrating configuration from Cisco 4500 with IOS 12.2(53)SG4 to Cisco 6500-VSS with IOS 12.2(33)SXI7.
 
With 4500, we had  2 servers with JBoss running multicast to build up the cluster. They used 239.X.X.X multicast IP. There was no need to configure "ip igmp snooping vlan XX static XXXX.XXXX.XXXX interface X" neither static arp entry.
 
When we migrated to 6500 in VSS, we had to do:
 
mac-address-table static XXXX.XXXX.XXXX vlan XX interface X disable-snooping
 
With this command, the JBoss cluster worked well. The question is, ¿Is there any difference regarding IGMP in 4500 versus 6500?

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Cisco Switching/Routing :: 3560E / IP PIM Sparse-Mode On Vlan Interface

Sep 23, 2012

I'm trying to configure "IP PIM SPARSE-MODE" command on a vlan interface on a 3560E switch but it doesn't give me the option to do this. The only option available is ip pim passive. What would cause this ? On the same switch a physical interface is already configured with IP PIM SPARSE-MODE.

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Cisco Switching/Routing :: VG224 Quits After Upgrading IOS To 15 On 3560E Switch

May 15, 2013

I recently upgraded a remote site of mine to IOS 15-2.SE ipbasek9 on 3 3560E series switches. On switch number 2 I have 5 VG224's running (vg224-i6k9s- m) 12.4(22)T3. After the switches reloaded the VG224's dropped their connection. After doing all basic troubleshooting I reloaded the 12.2 (58)SE2 ipbasek9 image back on to the 3560E's and the VG224's reconnected immediately after reload and all phones registered.
 
Is the problem a licensing issue with the 15.x IOS on the 3560's or do I need to upgrade the VG224's to IOS 15.x as well for them to connect and operate via the 3560e switch running 15-2?

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Cisco Switching/Routing :: IGMP And QoS On CAT6500 Platform With SUP720 Engine

Mar 27, 2013

I am having problems with IGMP and QoS on CAT6500 platform with SUP720 engine.The problem is, it seems that all IGMP packets are getting marked with DSCP 48 when sent out of the switch regardless of any input service policy. I found several articles saying that PFC QoS does not apply to IGMP packets. However in IOS 15 that should be possible, but I didn't get it to work there either. [code]

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Cisco Switching/Routing :: Nexus 7010 - IP IGMP Snooping Querier

Sep 23, 2012

I've got a pair of Nexus 7010's running vPC. I am having a Multicast issue with a cluster of Linux servers that need to talk Multicast for cluster/high-availability operation. All the servers need to talk to a single multicast address and I am having trouble getting them to communicate. I believe I need to enable IP IGMP Snooping Querier on the N7K's and it needs to be enabled on the VLAN where the servers reside. How to enable IP IGMP Snooping Querier on a VLAN ?

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Cisco Switching/Routing :: 3560E Connecting A Fiber Between Remote And Main Site

Apr 15, 2012

We have a Site that is connected via Wireless Bridge to the Main Site, the site is on separate VLAN with Cisco 3560 switch. The main site has 6509 swith. Configuration as per attached diagram. We are connecting a fiber between the remote and the main site and adding a 3560E switch at the remote site, however we would like to keep the wireless connection as a backup in case the fiber is severed the wireless will be availble. Attached diagram shows detailed cofiguration. I would like to know what should I change to make this working. STP is enabled on all switches.

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Cisco Switching/Routing :: Private Vlan Configuration On 3560E 24 Port Switch

Dec 12, 2012

We have a 24 port and 48 port 3560 E switches with identical IOS the 48 port switch supports private vlan while 24 port switch doesnt
 
configure private vlans on 24 ports 3560e and is it best practise to configure private vlan on this platform(3560)?
  
IOS version : C3560E Software (C3560E-UNIVERSALK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1)
flash:/c3560e-universalk9-mz.122-55.SE3/c3560e-universalk9-mz.122-55.SE3.bin

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Cisco Switching/Routing :: 3560E - Catalyst Switch As Console Terminal Source?

Nov 11, 2012

is it possible, to use a Catalyst Switch (in my case a 3560E) as a source for a console session to another Catalyst? In principle to use it as a console terminal server.

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Cisco Switching/Routing :: Default IGMP Snooping Is Enabled On 3750 From Documents

Nov 14, 2012

We have a 3750 acting as the core. By default IGMP snooping is enabled on cisco 3750 from the documents.but, when we see the ip mroute table on the switch, it doesnt show any output.

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Cisco Switching/Routing :: IGMP Snooping Configuration For Multicasting On Catalyst 3020

Nov 24, 2011

Our switch model is "Cisco Catalyst Blade Switch 3020 for HP" We are building HA (High Availability) Databases infrastructure.Currently, there are two nodes(hosts- servers) and two above switch for HA.
 
Oracle said we need to turn off the IGMP Snooping in order to use the multicasting for their interconnect communication.So my question is:
 
Q1> Is there any way to use Multicasting without turning off IGMP Snooping on Switch side?
 
Q2> If 'yes', how can we configure the switch for Multicasting ?
 
Oracle uses 230.0.1.0 & 224.0.0.251 IPs with 42000 range port for Multicasting communication.

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Cisco Switching/Routing :: Key Functional Differences Between Catalyst Switches 3560E / 3560X And 3560G

Dec 1, 2011

I need to know the key functional differences between the Catalyst switches 3560E, 3560X and 3560G.

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Cisco Switching/Routing :: 3560E Receiving A Large Amount Of Output Drops On 4 Interfaces

Dec 6, 2011

We are receiving a large amount of output drops on 4 interfaces that connect to microwave wireless.This is playing up with our Management system. Saw a bug report but that was for 3750, not the IOS version  but was a similar issue. [code] The output errors tend to happen at the same time. All ports are trunks however there are other trunks on the switch that are not having these issues. [code]

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