Cisco WAN :: Set Up QoS Between 2811 Router And 3750g Switch?

Feb 14, 2011

I'm trying to set up QoS between a 2811 router and a 3750g switch.  I'm currently using the 3750 as the router for one side, having the interface connecting to the router as a routed interface. 
I have this config on the router side:
 class-map match-any IPTel-Traffic-CL
match ip dscp ef
match ip precedence 5


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Cisco Switching/Routing :: Upgrading From Router 2800 To L3 Switch 3750G?

Feb 19, 2013

I wan to migrate from a router 2800 to L3 switch 3750G , the thing is that we have several vlans and we use a router sometimes with each interface configure with correspoinding vlan subnet ip to route traffic between vlans there is no static or dynamic routing only directly connected interfaces on router routing traffic to each other ?How would i configure a L3 switch interface for simillar functionality , below is my current router configuration

ip domain name
multilink bundle-name authenticated
vtp mode transparent


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Cisco Security :: To Put A Switch 3750 In Place Of 2811 Router

Dec 29, 2011

I have an ASA 5510 that I want to connect to 2 isp (one of my private network uses the isp1, and all others the isp2). Excluding the 5510 does not accept PBR(policy based routing), i saw that you could put a router, like cisco 2811 in front of the ISP. my questions are : can i put a switch 3750 in place of the 2811 router? , I have vpn connections in isp1, this architecture is compatible?

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Cisco Infrastructure :: 2811 Router Is Sitting Behind 3650 Switch?

Jul 9, 2012

Seeing very strange behaviour my 2811 Router is sitting behind  3650 switch, when the link between switch and router is trunk the router start rebooting itself, to test i changed to access mode then I can see ip address of router on cdp neig de or else not seeing ip address of router.

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Cisco Switching/Routing :: Flapping Between Router (2811) And Switch (2960)

Jul 23, 2012

we have cisco 2960 switch which is connected to a cisco 2811 router. flapping issue between these two devices??
The following actions i have taken, but no result.. I have changed cables. have set speed to 100 and duplex full on both the interfaces but the interfaces are showing up up still not getting connectivity. same i have to auto on both sides still no result what configurations should i set to resolve this issue...?

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Cisco WAN :: 3750G-12S Not Able To SSH To Another Switch When VRF Configured

Jan 26, 2011

I'm having issues with SSH on my 3750G-12S.  I'm not able to SSH to another switch when VRFs are configured.I've tried ip ssh source-interface, ssh -vrf doesn't exsist and I've upgraded the IOS to the latest version.

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Cisco WAN :: 2811 Router And 3560-48 Switch / Test Cable-diagnostics Output

Feb 26, 2012

what's the meaning of the output:
 Interface Speed Local pair Pair length        Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi0/40    100M  Pair A     2    +/- 4  meters Pair A      Normal
Pair B     2    +/- 4  meters Pair B      Normal
Pair C     2    +/- 4  meters Pair C      Short
Pair D     2    +/- 4  meters Pair D      Short
From the command

test cable-diagnostics tdr int gi 0/40
It's normal?If not, then. the problem is on the cable or on one of the interfaces?The interface is connected between a fastethenert on a 2811 router and a 3560-48 switch.The cable is a straight through cat 5e cable. (I have changed several cables with same result).

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Cisco Infrastructure :: Is GLX Compatible With 3750G-24PS Switch

May 23, 2011

I am trying to buy a GLC-SX-MM SFP module via Fed Stock, and I keep getting a GLX-SX-MM. What is the difference between these two part numbers? I can't find it on the Cisco Web site and eve a search of Google comes up relatively fruitless! Is the GLX compatible with my 3750G-24PS switch?

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Cisco Switching/Routing :: 3750G Switch With PBR With IP SLA Not Working?

Oct 8, 2012

I am having a switch 3750G (WS-C3750G-24TS-S) running a software version (c3750-ipservicesk9-mz.122-55.SE6.bin) and using the PBR with IP SLA.While, i am applying it on interface, it says not supported....
route-map TO-CAS-E0 permit 10
match ip address 125
set ip next-hop verify-availability 10 track 100     (if i change this command to set ip next-hop, it works)
WAN-L3-3750SW01(config-route-map)#interface GigabitEthernet1/0/11


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Cisco Switching/Routing :: Switch 3750G-12S-S Configuration?

Jan 2, 2013

I have one switch 3750G12S I joined the company new, I found that they want to replace it with Alcatel stack switches. I didnt configure this Cisco switch before. how to configure it. I have 4 other new cisco switches in the topology which is not created yet. the 4 switches are all 2960.

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Cisco Switching/Routing :: Switch 3750G Stack

Jun 17, 2012

have one 3750G stack with 4 switches and this stack is presenting the follow log message:
%PLATFORM_UCAST-4-PREFIX:  One or more, more specific prefixes could not be programmed into TCAM and are being covered by a less specific prefix, and the packets may be software forwarded.
In this stack we are using the layer 3 with OSPF routing, and the current sdm prefer is default:
switch-01-3750#sh sdm prefer
The current template is "desktop default" template.
The selected template optimizes the resources in
the switch to support this level of features for
8 routed interfaces and 1024 VLANs.(code)

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Cisco Switching/Routing :: 3750G / Errors In Switch Log

Feb 7, 2011

I have two 3750G switches that are in a stack, and I am seeing these errors in the log: 
002258: Feb  4 17:06:06.355 UTC: %PM-3-INTERNALERROR: Port Manager Internal Software Error (vlanid >=0 && vlanid < PM_MAX_VLANS: ../switch/pm/pm_vlan.c: 1279: pm_vlan_get_vlan_data) (CBAC01-3750-2)
-Traceback= 190F078 19729A0 1972A64 1963764 110BC24 195F2F8 110BB9C 196D2C8 195ECD4 110BC24 19658B0 110BB9C 196D1D8 194C2B8 195D24C 110BC24 (CBAC01-3750-2)
002259: Feb  4 17:06:06.355 UTC: %BIT-4-OUTOFRANGE: bit 4096 is not in the expected range of 0 to 4095 (CBAC01-3750-2)
-Traceback= 10273BC 1027478 1972B50 1963764 110BC24 195F2F8 110BB9C 196D2C8 195ECD4 110BC24 19658B0 110BB9C 196D1D8 194C2B8 195D24C 110BC24 (CBAC01-3750-2)
002260: Feb  4 17:06:06.355 UTC: %PM-3-INTERNALERROR: Port Manager Internal Software Error (vlan > 0 && vlan < PM_MAX_VLANS: ../switch/pm/pm_vlan.c: 773: pm_vlan_set_portlist) (CBAC01-3750-2)


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Cisco Switching/Routing :: 3750G Replacing VTP Server Switch

Apr 8, 2013

I'm due to replace a stack of 2 x 3750 switches very soon with 2 x 3750Gs.  These 2 current switches are the VTP server for a small domain.  I have put the config on the new switches switches and I made it a server and used the same VTP domain and password etc and got the VLAN info ported over.Now I did this a while back and noticed the switches are in transparent mode with a revision number of 0, I need to set this back to server and swap the switches out but the revision will be lower than the client switches (around rev 200), what do I need to do?

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Cisco Switching/Routing :: 3750G - How To Bypass Old Configuration In Switch

Mar 7, 2013

I am having an issue bypassing a switch 3750G series. How i can bypass the old configuration in the switch.i have tried the CTRL+BREAK at startup but it wont work.      

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Cisco Switching/Routing :: Stack 3750G-12S-S With 3750X-48T Switch?

Apr 14, 2012

if we can stack the 3750G switch with a 3750X switch ?

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Cisco Switching/Routing :: IOS Upgrade Procedure Switch 3750g?

Apr 23, 2013

I am looking few information on IOS up-gradation for the switch   WS-C3750G-48TS-S . I loaded new Image on the flash and current flash and sh boot as below
 Switch#sh flash 
Directory of flash:/
     2  -rwx     8859636   Mar 1 1993 00:08:14 +00:00  c3750-ipservicesk9-mz.122-37.SE.bin
    3  -rwx         556   Mar 1 1993 00:02:38 +00:00  vlan.dat
    4  drwx          64   Jan 9 2012 03:17:56 +00:00  crashinfo_ext
    5  -rwx        5768  Apr 24 2013 04:25:28 +00:00  private-config.text

1) I would like to set  boot sytem parameter for the new IOS and secondary old IOS as well  is below command works??? if IOS not coming up with new one 12.2.58   is it boots with old  12.2-35 ?
   boot system flash:c3750-ipservicesk9-mz.122-58.SE2.bin;flash:c3750-ipbase-mz.122-35.SE5
2) If I set only  boot system flash:c3750-ipservicesk9-mz.122-58  ,  if new image corrput swicth will check valid image and boot up with old image ?
3) If switch went to room1 switch mode  and still I have valild running IOS c3750-ipservicesk9-mz.122-37.SE.bin  at flash memory, how to restore with old image

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Cisco Switching/Routing :: Catalyst 3750G / WS-3750G-48PS Memory

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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Cisco :: 3750G-48 Good Sources Of Information To Program And Configure This Switch

Dec 24, 2012

I am a very basic user on the Cisco Switch programming. I was given a Cisco 3750G-48 to tinker with in my home office. I was wondering if someone could lead me to some good sources of information to program and configure this switch? I am wanting to create a GB network in the house with the computers that I have and the storage arrays.

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Cisco Switching/Routing :: 3750G / Switch Loses Connecting To Distribution SW

Feb 21, 2013

The two stacked Cisco 3750G Access switches on a particular floor in my coy just lost connectivity to the distribution Switch this morning. This meant that all Users connected to it couldnt connect to the Internet nor access local network resources.I couldn't ping the Switch IP, I couldn't also access the Switch via Console port. Each time I tried to gain access via the console port, I keep getting "Authentication Failed" message.What should I do next? How do I gain access to the Switch?

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Cisco Switching/Routing :: Unable To Add New 3750G Switch Into Existing Domain

Mar 30, 2013

i am not able to add new 3750G switch into existing domain even after the domain name is correct and unable to authenticate with tacacs.

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Cisco Switching/Routing :: 3750G Spanning Tree On New Switch Stack

Nov 3, 2011

I am about rip and replace my current 3750G stack with a 3750X stack. I have trunked over vlan and vtp info and implemented a config so it should be ready to go other then moving cables onto it. However one thing I want to correct with our current setup is that the root bridge on our vlans including vlan 1 is on a separate set of switches that we control, however I would like this new stack to be the root bridge for all of our vlans. It will be the central set of switches that all other switches trunk into.  I have pre-set higher spanning-tree priorities for each vlan on the new stack so I expect as I move lines into it that the tree will be re-calculated with it as the root bridge. I've ensured that there are no root guards on any of the other switches trunks and priorities are all at default levels for each vlan. Should I enforce root guard on the trunk interfaces of the new master stack?  Most of the trunks are port-channels to the other switches - do I need to set root guard on the Port channel interface or on the individual ports that make up the Port channel? On both? Any other recommendations in regards to implementing spanning-tree with the new stack? I know using port channels eliminates a lot of potential for loops but not every trunk is and I'd still like to have spanning-tree on.

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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 :: Connect Two Switch Catalyst 3750G Without Success

Nov 24, 2011

I try to connect two switch Catalyst 3750G without success.switch1 ( vlan 2) <=> ( vlan2) switch2.I use this configuration for swich1 [code]

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Cisco Switching/Routing :: 3750G / (int Fa1/0/26) Connected To Switch / Goes In Err-disable State

Mar 30, 2013

I am cascading one new switch 3750G (int Gi1/0/1) with an existing 3750G (int fa1/0/26) switch.. But the interface fa1/0/26 goes in err-disable state even after NO SH.. also i have diable Spanning treebpdu guard and disable spanning tree portfast. But still the issue is not resolved.

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Cisco Switching/Routing :: 3750G-12s-s Switch Reboot When Power Source Restore From RPS To AC?

Dec 7, 2011

I am facing switch reboot issue when power of switch restore from RPS to AC.

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Cisco Routers :: 3750G Switch Configured VLAN Port Will Not Communicate With RVS4000

Feb 16, 2013

There are 5 VLAN's and all can communicate through all the different subnets, but VLAN5 can not communicate to the RVS 4000. 
VLAN Smart Port set to switch and router - this is not working What Smart Port configuration should be set up to talk to the LAN port on a RVS4000?
VPN is set up and connected, but when trying to connect to the client can not connect to remote networks.

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Cisco Switching/Routing :: 3750G - Adding Additional Switch And Making It Stack

Feb 29, 2012

I currently have Cisco 3750G which is currently live and active and fully populated and only have remote access.
I have an additional same switch which I would like to stack. My initial plans were to have 2 GIbit etherchannels, but I came across the option to Stacks both switch with each other.
When I do a show switch on the live switch its set as a Member: [code]

I would like to add the new switch to the stack without losing the config for the switch which is live. I understand that the highest priority of the switches becomes the Master but as the live switch is Priority 1, would chancing this affect the switches config, or would it lose connection at all?
Also when I plug in the new switch and it reboot how do I ensure it becomes the slave without rebooting the live switch?The cables on the switch do they have to go to port1 on the live switch and port 1 on the new switch or can they be port 1 and port 2?

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Cisco WAN :: 2811 - Routing The Switch Ports

Mar 10, 2011

I have a 2811 router with a 9 port switch module and a four port ISDN module.  The ISDN Module is our connection to the outside world.  FE 0/0 and FE 0/1 are connected to separate networks and both route our the ISDN connections.We are getting a new satcom system that consists of a modem, antenna control unit (ACU), and an antenna.  The ACU and the modem communicate accross Ethernet and are generally hooked to a switch.  Anything computer hooked to the switch can simply use the modem IP as it's gateway and be surfing the Internet without much hassle (just need the correct DNS addresses).I'd like the networks behind FE 0/0 and FE 0/1 to be able to route out the satellite modem for their Internet connection -- when the satellite is available.  Is it possible to put two switch ports in a VLAN (one for the modem and one for the ACU), give the VLAN an IP in the same subnet as the modem and ACU, and then tell the router to route traffic out the modem IP address ?

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Cisco WAN :: 2811 Access Point And Switch Is Not Connecting

Aug 22, 2011

I have a Cisco 2811 router with C288nm-advsecuruityk9-mz.151-4-4.M.bin IOS version.The router has two LAN interface FE 0/0 and FE 0/1.The router have too, two interfaces ADSL ATM0.0.0 and ATM 0.0.1, both are connect to internet..I need the next configuration.The interface FE 0/0 is directly connect to a Switch A.The interface FE 0/1 is directly connect to a Access Point Cisco.The Access Point and the Switch is not connecting between.The subnet of Switch A and AP are different (Switch A and AP devices in the switch A have dynamic IP address, the router must be a DHCP pool to assign theses IP.The device in the AP have dynamic IP address, the router must be a DHCP pool to assign theses IP.I created two DHCP pools in the router, one for the subnet and other for, but the devices of FE 0/0 assign IP of or 192.168.181. 0, but not only in the

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Cisco WAN :: 2811 Non-stacked Dual Switch Failover

Jun 6, 2012

I'm trying to see if I can use both ethernet ports on a 2811 to run hsrp for non-stacked dual switch fail over.  Then link the the NM-32A ports to L0, so the remote access server trying to use them can use the l0 ip and failover much faster (it's programming is limited).  This is on IOS 12.4(25)f, though we are moving to 15 soon.

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Cisco WAN :: 2811 HWIC Switch Cannot Be Configured As A Network Interface

Apr 14, 2012

I currently have a Cisco 2621 powering a network at our  co-location facility... It's a simple setup and is working well. The colo  provides a redundant HSRP uplink, so I have their two uplinks going into  a Dell switch. From that Dell switch I have a uplink into  FastEthernet0/0 on the 2621, configured with my routing network, and  then FastEthernet0/1 gets an address from my block of routable IP. FastEthernet0/1 then plugs into another  Dell switch where I have all my servers connected. The servers get public routable IP addresses and use the address on FastEthernet0/1 as their default gateway.
It's time to upgrade off the 2621, so I aquired a Cisco 2811 which has two FE interfaces, as well as a modular HWIC-4ESW switch. My question is, can I get rid of the Dell Switch A in the setup above and just use the internal switch on the 2811 to accomplish the same thing? And I if I did this, would my two uplinks from the colo plug into ports 1 and 2 of that HWIC, and then port 3 would physically connect into FE 0/0? Or can I logically do that via configuration in the Cisco? I'm not sure how all this works and haven't received the new router yet, so I thought I'd get a head start and reach out to the experts.
My second question is unrelated, but each port on the HWIC switch cannot be configured as a network interface right? I'm pretty sure they can't as they aren't considered network interfaces but just thought I'd ask.

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Cisco Switching/Routing :: 2811 With 16 Port Switch Module Configuration?

May 12, 2013

I have a laptop with a single physical NIC which I have used the advanced management tools to create two virtual NICs (say vlan 10 and vlan 20) and both are on the same subnet (say 192.168.4.x). One NIC is for normal TCP/IP traffic and one is for broadcast/multicast traffic (I have some custom software that requires this to be the case and works fine on an older laptops with built-in physical NIC and PCMCIA XIRCOM NIC). The dual NIC laptop communicates with a dual NIC server via a Cisco 2811 router (which has a 16 port switch module at the back) and has vlans set up so.
What I want is for the single NIC laptop (with two virtual NICs) to be able to also communicate with the server. Basically, one NIC is for normal traffic and one is for multicast/broadcast traffic. All three machines need to be able to talk to each other using the NIC for normal traffic and both laptops must be able to receive broadcasts from the server. What is the best way to configure the router to handle the trunking/tagging? Most configuration documentation I read has two complete subnets for the two virtual NICs. Note that all three machines use static IPs and are part of a workgroup so no DNS and domain servers etc.

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Cisco WAN :: 2811 - Configuration Of Router And BGP

Nov 8, 2011

I want to configure BGP but i am finding it very difficult to know BGP as I am new to this concept.
What is theoretical and practical approach to configure bgp??
I have to configure my office router 2811 for two ISPs which will be acting as fail-over.
I have to start it from scratch.

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