Cisco Switching/Routing :: Catalyst 2950 Failed To Get Default Gateway

Apr 1, 2013

Using Network Assistant in XP, plugged ethernet cable to first front port and keep getting "Failed to get Default Gateway. Check your security settings to make sure the current Java Virtual Machine is not prevented from running commands.", I have tried reducing secruity to nothing but I still get the same problem.
 
I also have an official cisco console cable and tried that, but Hyperterminal just does not pick it up when plugged in. I have left the IP dynamic, turned off all netowork adapters apart from ethernet, set the baud rate etc... correctly, still no joy.

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Cisco Switching/Routing :: Catalyst 2950 Failed Password Reset?

Jun 7, 2012

I am not able to successfully accomplish the password reset function. This 2950 does not respond to the mode button held down at power up or to sending a briak. I have tried both several times and the switch continues to fully boot. [URL]    
 
C2950 Boot Loader (C2950-HBOOT-M) Version 12.1(11r)EA1, RELEASE SOFTWARE (fc1)Compiled Mon 22-Jul-02 17:18 by antoninoWS-C2950G-48-EI starting...Base ethernet MAC Address: 00:0b:fd:a1:4f:80Xmodem file system is available.Initializing

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Cisco Switching/Routing :: Catalyst 4506 - Default Gateway Doesn't Work

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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Cisco Switching/Routing :: Catalyst 3750-x Icmp Delay To Default Gateway?

Sep 10, 2012

i am facing a problem when the client vlan is commmunicating with the default gateway on the core 3750-x.
 
ios in 3750-x core is  3750e-universalk9-mz.150-2.SE.bin.  But, client to client communication is happening without any dealy and icmp is less than 1 ms always.
 
When try to ping default gateway of client vlan, it is getting delayed (variable icmp delays). Is this an ios bug?

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Cisco Switching/Routing :: Catalyst 3560 - Routing Enabled With / Without Default Gateway Or IP Route Command

Feb 25, 2013

We have two catalyst 3560 switches running  c3560-ipbasek9-mz.122-58.SE2.bin  They are connected using etherchannel using gi 0/21 -  24 interfaces.
 
on 3560-1 switch, there isn't any ip-default gateway or ip route configured. It only have 1 interface vlan configured.
 
on 3560-2 switch, there is ip default gateway configured along with 1 interface vlan.
 
What i dont understand here is that, i can reach out to other subnets from 3560-1 switch in which the routing is not enabled?

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Cisco Switching/Routing :: Multiple Vlans On Catalyst 2950?

Sep 13, 2012

I have a above said switch at my remote office (600KM) which is connected with L2 Point to Point leased line. Both the ends I have Cisco 3950 catalyst switches with Vlans configured at both the ends. Now, for obvious reasons I should remove the other end 3950 switch and replace with Cisco 2950 switch. The other end 3950 is having 4 Vlans configured on 4 ports. Now my requirement is, I should configure 3 Vlans (one for P2P, one for 10 Desktops and one for to bring traffic from other network).

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Cisco Switching/Routing :: Catalyst 2950 Not Connecting Internet?

Oct 29, 2011

I bought refurbished Catalyst 2950. I followed all steps(even ip address and subnetmask and ..etc) guided in [URL] no thing happen, my computer doesn't connect internet. I guess switch has no routing.. Before bought that, i thought it is plug and play type. And now having some serious issue which i have to configure via telnet and/or ssh.

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Cisco Switching/Routing :: Trunking Between Catalyst 2950 Switches?

May 14, 2012

have setup a small lab as per CBTNuggets. Everything was going well until I introduced a second switch to create a trunk. Now I cannot ping between my two switches. Both show operational mode as down:
 
SWITCH1#show interfaces f0/12 switchport
Name: Fa0/12
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: down
Administrative Trunking Encapsulation: dot1q

[code]....
 
I have tried to allow all vlans or vlan 1 specifically and the output of the above doesn't seem to change. I am wondering if there is something in the config-register that is preventing trunking, but I don't really know enough yet!

The output of my second switch is identical to this one, the only difference is that I have it configured as a vtp client.

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Cisco Switching/Routing :: How To Configure RSTP On Catalyst 3650 And 2950

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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Cisco Switching/Routing :: Catalyst 2950 Disable Login Password

Aug 30, 2012

I have a customers Catalsyt 2950 switch come in for the configuration to be cleaned to factoy default, using the link below removed the customers banner and login information whitch worked
  
[URL] 
 
When i restart the switch and enter Enable mode I'm prompted with the  password which i used when following the link above,
 
I want to remove all passwords so when the switch is redeployed to the next site who ever the engineer is that is going to be reconfiguring the switch is able to access privlage mode with out the password promt.

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Cisco Switching/Routing :: Catalyst 2950 - Cannot Remove Banner And Login

Aug 12, 2012

I'm having trouble with a Cisco Catalyst 2950 Series Switch where by I'm following the procedure from Cisco's web site to remove the Banner and login information, url..

Each command is being accepted by the switch from following the information given within the help sheet above,the problem i have now is when i turn the power off then turn the switch back on I'm still getting the banner and login information even though i have follwed Cisco's help correctly.

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Cisco Wireless :: 5500 - Default Gateway ARP Lookup Failed

Aug 31, 2012

On a 5500 series WLC I see I have an issue where peap clients get randomly disconnected with these errors
 
MAX_EAPOL_KEY_RETRANS: 1x_ptsm.c:444 Max EAPOL-key M1 retransmissions exceeded for client 24:77:03:35:79:34
 
AAA-6-ARP_LOOKUP_FAIL: radius_db.c:3232 Default gateway arp lookup failed.
aaaQueueReader: Aug 31 19:12:14.938: %AAA-4-RADIUSMSG_SEND_FAILED: radius_db.c:3567 Unable to send RADIUS message to

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Cisco Switching/Routing :: Configure Virtual Circuits On Layer 2 Switch Catalyst 2950

Feb 14, 2013

can i configure virtual circuits on cisco layer 2 switch catalyst 2950 ?

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Cisco Switching/Routing :: Catalyst 2950 - Release For Snmp-server Enable Traps Errdisable Command?

May 16, 2013

We have a catalyst 2950 switch running:
 
IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA6, RELEASE SOFTWARE (fc1)
 
This release doesnt have the snmp-server enable traps errdisable command.
  
Where to look on the cisco site for the next available release for me that would have this command in place?

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Cisco Switching/Routing :: Catalyst 3750X Upgrade Failed?

Jan 27, 2013

I try to updgrade a stack of two 3750X-48PS to the IOS 15.0-2
 
Same commande has the twelves others stack I have upgrade lately
 
archive download-sw /overwrite tftp://x.x.x.x/c3750e-universalk9-tar.150-2.SE.tar
 
or
 
archive download-sw /overwrite usbflash0:/3750/c3750e-universalk9-tar.150-2.SE.tar (much faster!)
  
At the end I have this message :
 
extracting c3750e-universalk9-mz.150-2.SE/info (511 bytes)
extracting c3750e-universalk9-mz.150-2.SE/c3750e-universalk9-mz.150-2.SE.bin (19842267 bytes)

[Code].....

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Cisco Switching/Routing :: Default Gateway And VLAN200

Oct 18, 2012

imagine I want to make VLAN200 workstations communicate like the show in the attachment. What would be the default gateway to be configured in the workstation? If I configure 192.168.1.1 as the default gateway (R1 interface fa0/0) is this right?That could be possible because the switch should be configured with command "ip default-gateway 192.168.1.1"?

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Cisco Switching/Routing :: 6509 MSFC - LAN Default Gateway Routing

Mar 6, 2012

I have two ISPs. Each is on it's own subnet connected to the 6509 MSFC/Switch. FW1 is on 100.1.100.0/30 and FW2 is on 200.1.200.0/30 subnet. My goal is route all traffice going to the Internet from subnet 10.133.3.0/24 to FW1 and all other subnets across the organization to FW2. I am not sure if I need to use ACL / Static route combo, or just a static routes or ACLS?

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Cisco Switching/Routing :: 3750 - Can't Ping The Default Gateway

May 3, 2012

This would probably sound like a stupid question but it took at least 2 hours of my time so far. I have a 3750 switch where a router and a server is connected. From the switch I can ping the router and server with no issue (directely connected). But from the server I am not able to ping the router. The router and the server are in the same subnet. The router is configured as the default router for the server. I am not able to ping the server from the router either. Here's the output of the ip route from the router. The server IP address is 10.1.200.21 and the router IP address is 10.10.200.1
 
10.0.0.0/8 is variably subnetted, 8 subnets, 3 masks
C       10.1.30.0/24 is directly connected, FastEthernet0/0.30
C       10.1.20.0/24 is directly connected, FastEthernet0/0.20

[Code].....

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Cisco Switching/Routing :: 2960 Default Gateway Ip Route

Jan 24, 2013

I have a Cisco 2960 ( WS-C2960-8TC-S)  running 12.2(46)SE  C2960-LANLITEK9-M  image.I would like to set an ip route 0.0.0.0 0.0.0.0 87.101.156.97  but the current image does not allow.Will ip default-gateway 87.101.156.97 work or do I need ip routing ?The ISP has provided a /30 address and we are using an additional /29 for our network devices.  I dont think this image can be upgraded.  I need to forward routes directly out to ISP. [code]

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Cisco Switching/Routing :: 3750 - Default Gateway And IP Redirects?

Apr 10, 2013

I have a bit of a mystery on my hands. I had a whole campus of Cisco 3750's cache a new default gateway. Example
 
Cisco3750#sh ip redirects Default gateway is 10.10.10.1
 Host               Gateway           Last Use    Total Uses  Interface172.16.0.5      10.10.101.179        0:00        185749  Vlan1172.16.0.76     10.10.101.179        0:01         47254  Vlan1192.168.0.154     10.10.101.179        0:00        183090  Vlan1
 
My question is what generates a IP Redirect packet or how does the switch know what to change the gateway to? As in my case the changed gateway was a dead IP address. So I am at lose how this happened. I this case the Host IP's are network management servers conducting polling.

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Cisco Switching/Routing :: Catalyst 6513 - Error / Module Failed SCP Download

Dec 8, 2012

I have a Cisco catalyst 6513 with sup720-3bxl and WS-X6724-SFP modules , the switch was working fine until yesterday ,but after a maintenance the modue WS-X6724-SFP failed to bring online , the error code is (Module  Failed SCP dnld) does it mean the module has hardware problem or i need to replace it ?

-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
ios version
s72033-adventerprisek9_wan-vz.122-33.SXH7.bin
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
show module
Mod Ports Card Type
Model           

[code]....

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Cisco Switching/Routing :: 3500 XL - Remove Default Gateway IP Address

Aug 9, 2012

I have a 3500 XL switch with the following default gate IP address that i need to clear from the switch but not quite shore how to remove it.
 
I've removed the customer original Ip for security reason as this is an open discussion forum and just replaced with 1.1.1.1
 
switch#show ru
Building configuration...
Current configuration:
!

[Code].....

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Cisco Switching/Routing :: SGE2010P VLan Cannot Ping Default Gateway

Oct 15, 2012

I have created two vlans, vlan 1 data and vlan 200 voice. the issue is that when an on one vlan i cannot ping the default gateway of the othe vlan from my PC. An using sge 2010p switches.
 
below is my configuration
p route 0.0.0.0 0.0.0.0 192.168.0.1
ip dhcp relay address 192.168.0.100
ip dhcp relay enable
ip dhcp information option
interface vlan 1
ip dhcp relay enable(code )

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Cisco Switching/Routing :: 1841 Tunnel Without Default Gateway Not Connecting

Feb 12, 2012

I'm trying to configure an IPSEC VPN + tunnel for multicast data. When the default gateway is set on the router (1841) it works fine but if I only set a route to the IPSEC peer via our gateway then the tunnel fails to come up. The end point is to a 3rd party. [code]
 
I found that if I add a static route for the tunnel destination via fa0/0, the public facing interface, the tunnel comes up..ip route 10.23.4.2 255. 255. 255. 255 FastEthernet0/0
 
and I can then ping the tunnel IP at the far end - 10.23.0.5.Why would that be? Is there a better way to do this without using a default route??

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Cisco Switching/Routing :: Extending VLAN Default Gateway With 2821

Jul 25, 2012

I have a design hurdle that I cannot seem to cross. I have two sites and I need the same VLAN to span both sites. I have accomplished this using L2TP but my issue is that I can no longer assign a gateway for this VLAN on the router. The 2 routers are 2821's and are connected with a dedicated fiber run.
 
Ant recommendation for how this could be accomplished? It would be great if I could have the same gateway at both sites by leveraging some sort of bridged interface (BVI so I've heard) but I am at a loss as to where I should start with this. Also, this is not the only VLAN that needs to traverse the link.

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Cisco Switching/Routing :: WS-C3560CG-8PC / IP Connectivity Without Route Or Default Gateway

Sep 19, 2012

Recently we observed that newly installed WS-C3560CG-8PC access switches are able to communicate without a default route or default gateway.The 3650 switches are used as a layer2 access switch behind a layer3 distribution/core. They have only the management VLAN configured for IP with a single address.
 
The ARP table looks like there is an implicit proxy-ARP request sent for any IP address.
 
We definitely have no configuration whatsoever which would explain this.
 
Is this a new feature? We don't observe that with the older 2960-series...
 
Here is a brief trace of what's happening (debug arp):
 
host41#ping 1.1.1.1 
Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
 
Sep 20 14:44:06.706: IP ARP: sent req src 10.1.8.41 1833.9dc9.wxyz,
dst 1.1.1.1 0000.0000.0000 Vlan1
Sep 20 14:44:06.711: IP ARP: rcvd rep src 1.1.1.1 2c54.2dd3.wxyz, dst 10.1.8.41 Vlan1..

[code]....
 
The mac address if of course the mac address of the layer 3 interfaces of the distribution switch, no surprise here (proxy ARP is turned on by default).
 
Why is the 3560 sending out proxy arp requests without being told to? As far as I understood proxy ARP on Cisco IOS it only means it will reply to a proxy ARP request but will not send out proxy ARP requests by default.

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Cisco Switching/Routing :: 3560G - Cannot Ping Default Gateway With Route Map Applied

Apr 11, 2012

I have a 3560G and an ASA FW, for which I am trying to use PBR to append the next hop. The gateway is the switch VLAN address and the amended net hop is the same VLAN interface on the ASA. Trouble is, I can ping the FW from a client, but not the switch. If I remove the route map, I can ping both. Even more strange is this is the case for some VLANs, but not all!
 
Config:
 
HOST ON VLAN 96
IP 10.11.120.99
S/M 255.255.255.240

[Code].....

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Cisco Switching/Routing :: 3750 Switch - ICMP Delay To Default Gateway

Aug 25, 2012

I had setup a lan infrastructure with 5 3750 stack swithes. In these 3 of them are in one stack which is acting as access switch, 2 of them in another stack which is as core switch where all the SVI is configured. Now, when i tried to ping from our edge pc which is connected in access switch to default gaeway, which is configured in core switch, the ICMP is getting delayed . But when try to ping from the same edge pc to another user PC, it is getting less tahn 1 millisecond icmp replies.
  
why icmp is delaying to default gateway , but working with another edge to edge pcs without any delays?

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Cisco Switching/Routing :: Default Gateway Of VOICE Providers 2600 Router

May 21, 2012

We have two MPLS circuits managed by two different suppliers, one carries VOICE the other DATAWe are to decommision the VOICE MPLS and have increased the bandwith of the DATA MPLS to carry VoIP traffic too. 

At both of our sites A & B ,devices connected to the LAN have a default gateway of the VOICE providers Cisco 2600 router , which then goes into the LAN switching. (see diagram)So what I am trying to achieve is toto simply replace these 2600 routers from the VOICE MPLS provider with our own so we dont have to change the default gateways at both sites. 
Testing
 
Our Cisco 2600 routes are plugged into each LAN switching environment with two subinterfaces configured, one for voip and the other for dataThe problem is from the router and respective subinterfaces we can get to the other sites destination without any issue, but if for example a user is at site A with Ip address 10.16.11.12/16 they cant ping the VOIP subnet at site B 10.3.11.0/24. But If a ping is issue from the Site A test router then the 10.3.11.0/24 subnet is reachable but only on the 10.3.12.0/24 configured subinterface.So i guess what Im saying is 10.16.0.0/16 from the LAN needs to be able to get to 10.3.11.0/24Note at site A 10.16.0.0/16 & 10.3.12.0/24 can communicate no problem and at site B 10.207.0.0/16 & 10.3.11.0/24 can communicate no problem.We are using IP routing, should we be using route-maps? 

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Cisco Switching/Routing :: 6509 / 3750 - No Default Gateway Or Static Routes To Any IP

Mar 5, 2013

We have a 6509 series of core switches and 3750 series of L2 switches, There is no default gateway or any static routes to any IP.VLAN 1 is made admin down and another vlan is used for all communication here in this environment

Attached is configuration for reference But still I am able to take telnet or SSH. I want to know how telnet or SSH or tacacs authentication happens without any static or default route.

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Cisco Switching/Routing :: Benefits Of Using Static Route With Default GW With Catalyst 3560

Jul 4, 2012

A check out a network segment and want to know why SwA has a static route to SwB if SwA already has a Default GW to Core?

(SwA, SwB - Catalyst3560, Core - Catalyst4948)Note, there are distribute list on SwA - it does not has any OSPF route (exclude O*IA).

Does this mean when SwA send out packet with DA 10.5.64.0/26, Core will use only L2 switching (instead of L3)? Is this more effectively for Core Switch?

Pleace check my reasoning:
1. When use a static route: SwA receive packet from Vlan 20 with DA 10.5.64.0/26 it will strip out Dest. MAC and replace it with MAC of SwB. Core will switch this packet to SwB based on mac add. table (l2 switching)

2. When SwA has only Default gateway and receive packet from Vlan20 with DA 10.5.64.0/26 it replace Dest. MAC with Core MAC. Core receive this packet, lookup route table for 10.5.64.0 entry and forward packet base on this.

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Cisco Switching/Routing :: 4500 / 2960 - How Layer 2 Switch Works Without Default Gateway

Aug 14, 2012

4500 switch is connected to 2960 switch.
 
4500  config
Vlan 10
name Data
 
It has ip helper configured that points to DHCP.From 4500  switch port  - port  x connects to 2960 port.Port x is configured as trunk between 4500 and 2960.

2960 config
vlan 10  
name data 

All user ports are configured under vlan 10 and as access ports.Port x is trunk port connected frpm 2960  to 4500 switch allowing vlan 1 and 10 only.This switch has no default gateway configured.
 
We connected user PC on 2960 switchports and they were able to get the IP from DHCP server and were able to access the network? My question is how users on 2960 switch are able to access the network without ip default-gateway configured  on 2960 switch?

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Cisco Switching/Routing :: 4503 Blocking Usage Of Duplicate Default Gateway IP By Rogue Attacker

May 16, 2012

We had a core switch (4503), distribution switches and access in our network and consists of many vlans. Almost all vlans uses DHCP Pools. But for few vlans DHCP is not yet configured. Recently one of the rogue user in vlan 1 gave the corresponding interface vlan ip of core switch (gateway) as his ip and caused a prolonged network outage for the vlan. Any way we are going to seggregate vlan 1 into different vlans, but before that we need a temporary plan to block such kinds of attack.What are the possible ways we can avoid the network outage problem even if a user gave the gateway ip to the machine?

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