Cisco Switching/Routing :: 6500 Shutdown Interface On One Router / Deleted Secondary Address
Jul 15, 2012
I have just updated a VLAN interface on my router. I have two 6500's with GLBP configured. The particular interface had a primary and secondary IP address. I shutdown the interface on one router and deleted the secondary address then assigned the orignal secondary address to be the be the only address associated with the interface and enabled the interface and it came right back up...all looks good. I proceeded to do the same thing to the other router and once again all looked good. Now, I am able to PING the devices in the subnet from router, but am unable to ping them from any place else. [code]
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Jun 14, 2012
I have used the two sl and tm scripts that was on the previous discussion but with no luck. I'm currently using IOS version 15.how I can get this work on my c3750 and 6500.
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Jun 14, 2012
I have used the two sl and tm scripts that was on the previous discussion but with no luck. I'm currently using IOS version 15. how I can get this work on my c3750 and 6500.
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Sep 13, 2012
I understand the vlans on the catalyst side of the house on 2900 to 6500 Catalyst switches.
This 7010 running nx-os 5.1(3) I did not setup, but have to manage it. Hasn't really been a proble till now.
My nexus 7010 has a Layer 2 only vlan 11. It is "Active" but the interface is "shutdown". Yet, it is passing traffic across the directly connected ports on the nexus 7010 and to other switches in my network. Vlan 11 is being set out via VTP to all my switches and things are running fine.
I need to create another L2 only Vlan. I can't seem to find any docs that indicate that a Layer2 vlan Interface on nx-os should be in "shutdown" mode as part of the setup. I do see in the docs where it has to be set "Active" as part of the process.
Is this the correct way to seutp a L2 only vlan on nex-os? Leave the interface in "shutdown" but make it "Active"?
Mystery Vlan 4 and 6
The mystery deepens. I have other L2 vlans ,Vlan4&6 that are NOT defined as "Interface Vlan4" in the nexus config, yet it is applied to GigE ports on the nexus and these Vlans 4/6is also being sent out VTP to all switches. Even weirder is that these vlans have names associated with the numbers. These are valid Vlans that were configured on the old 6509 before the Nexus was installed.
I have checked all switches, NONE are running in Server mode for VTP, all are in CLIENT. The nexus 7010 is the only device running in VTP Server mode.
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Feb 21, 2013
I have a few old 2600 routers (2621, different IOS's) which I'm now replacing for new one's from the 2900 series (2901, Version 15.1(4)M4).In my configuration I have two IP addresses in my LAN interface and I have HSRP configured within the secondary IP subnet range. It would be something like this:
interface GigabitEthernet0/1
ip address 172.x.x.x x.x.x.x secondary
ip address 10.z.z.z z.z.z.z
[Code].....
Now, in the new 2900 routers, my interface configuration hasn't changed however I can see that the hello packets are now sent with the source within the respective HSRP IP subnet so I had to edit my acl for that:
permit udp 172.x.x.x x.x.x.x host 224.0.0.2 eq 1985
Is there a way I can force the HSRP to work as it previously did in the old IOS's?
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May 11, 2012
I have recently configured secondary ip address on LAN Interface of Cisco C6509.. We have some application which needs to use broadcast traffic communication to communicate with client... Broadcast is working within subnet & also working from broadcast server to primary subnet. But not working from secondary subnet.. I have checked broadcast within secondary IP range & it's working fine... Secondary not working broadcast with primary and also with broadcast server... broadcast address is different for these subnet but both should be communicate since configured on same interface... When I went through Cisco website found that command "ip directed broadcast" which will pass broadcast to different subnet... But I'm not sure whether any other impact if I enable that command on particular Ethernet interface...
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Feb 12, 2012
On a 6500 switch running ios 12.2, is there a way of clearing all config settings for a specified interface? I want to avoid going through and having to type "no blah blah etc" for each line.
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Apr 23, 2012
I'm trying to add an outbound policy on Layer3 interface on a 6500. The will be used to prioritize voice traffic. The environment contains 2 sites with 2 6500's each with VSS and a metro Ethernet link between them. I seem to be having problems prioritizing the voice across this link.
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Oct 31, 2012
The customer has 4 6500 switches. 2 Physical locations, and 2 switches at each locations. The locations are connected via 1 200mpbs metro ethernet(layer 2). We ran into an issue during a DR exercise. We had created a VLAN for DR testing purposes, that did not have any SVI configured, but the VLAN did exist on one of the 6500s. When the customer restored a VM to the DR VLAN, we lost connectivity to the production server. After some troubleshooting, we found the cause to be the same mac address showing up, but in a different vlan. Once we removed the DR vlan from the 6500 all was well. It seems like switches are ignoring the VLAN in the mac address table, and forwarding to the incorrect ports. The switch is not reporting any mac flapping in the logs. No spanning tree topology changes are occurring. Code version is 12.2(33)SXJ2 on all switches.
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Mar 5, 2013
I have a really weired thing happening on 6509 device with one of my customers.The device has a SUP 2 (MSFC2) with version 12.2.18SXF17B.
any VLAN interface once administratively down or simply down shows on "show interface status" output as VLAN.While it supposed to show "Routed". However once the port is up it is shows "routed" like it should.
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Apr 8, 2013
we have 6500 cisco switch as a backbone switch in universty. When ı want to look mac addres table , it does no show all mac address.ı mean if ı type ;show mac address-table there are not all mac address.
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Apr 30, 2012
I have an Issue.In my networks, 1 single user is facing Network Slowness issue. i needs to check to which port user is coneected in switch to CHeck whether that port has any errors.But problem is, i am providing support from remote location.And my concern LAN segment is Very big,I have only user Ip address details,when i ping the Ip address from Core switch it is pinging. but when i give show ip arp & give Ip address then its not learning and listing out the Mac address to trace down to the specific port.
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Feb 12, 2013
Q. Does the Supervisor 720 support all existing Cisco Catalyst 6500 series interface and services module, protecting customer investments?
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Jun 11, 2013
I have 2 servers, one active, the other standby, both will be using the same IP. If the active fails then a re-patch for the standby to make this the active. I understand that i will need to clear the arp & maybe mac address table on the 6500 for the new active server to work, as the failed server will have its mac address on the 6500,.
is there a way around this so i dont have to clear the arp cache & clear the mac table? [code]
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Dec 26, 2012
We are facing issue with mac address learnt from different port-channels, Connectivity is like 6500 as core running VSS and 4500 access switches are connected to Core and WLC is also connected to Core.WLC to 6500 PO 60 , 4500 to 6500 PO 32.
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Jul 12, 2010
We want to configure the "mac-address-table synchronize" command on our 6500 series switches to ensure that the CAM tables on our DFCs are in synch with the PFC on the supervisor modules. url...it is recommended that we disable the routed MAC purging with the mac-address-table aging-time 0 routed-mac global configuration command. What is a routed mac entry? Are there any issues with running that mac aging-time command?
We also plan to run this command "mac-address-table aging-time 14400" to keep our ARP and CAM tables on the same aging time to reduce unicast flooding on our network. Can we run this command with the "routed-mac" command above?
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Feb 22, 2013
Version 12.2(33)SXI
int vlan 1
description client vlan
ip vrf forwarding A
ip address 10.1.1.1 255.255.255.0
standby 129 ip 10.1.1.2
standby 129 timers 1 4
standby 129 priority 105
standby 129 preempt
ip helper-address 10.1.2.20
[code]....
dhcp requests are not making it to the dhcp server SAME VRF (ip helper-addres is not doing anything.....)extended vrf traceroutes on udp 67 sourced from vlan2 are fine
I am expecting udp unicast packets on port 67 "giaddr" relay packets on the DHCP server generated and sourced by the relay on Vlan1
eg. Mar 1 01:59:06.731: DHCPD: setting giaddr to 10.1.1.1
This exact setup works in our preprod environment with the same code.Only difference is we run Distributed etherchannel on the 6500's where this doesnt work.
Wireshark on the client I can see the requests being sent Going to check it with debug ip dhcp server to check the relay logs out of production hours.
I have seen so many people say it IS and ISN'T supported on this version of the code.e.g. [URL]
I am aware the helper-adddress should inherit the vrf of the interface ip helper-address vrf command is not supported.The fact it works in the PP environment.... could this be due to the Distributed EtherChanel difference? or just some bug....
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May 22, 2013
I have an MPLS network router(Router1) and an internet router(Internet1) at a site of mine(Site1). the MPLS router sends all unknown traffic out the internet router. Router1 is the default gateway for all hosts and directs the traffic.I also have another network at an alternate site (Site2) on the same mpls network also with an internet egress. It is composed of an MPLS router (router2) and an internet router (Internet2).I would like Router1 to send internet bound traffic out Internet2 if Internet1 is down. Basically the statement on Router1 for the unknown traffice is ip route 0.0.0.0 0.0.0.0 172.31.1.254I have never heard of IP SLA before but it seems to be the best method for this situation.
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Apr 19, 2012
I have a cisco 878 router and I can’t assign ip address to it’s fast Ethernet interface. When I assign ip address give me this message: “you can not assign ip address to layer 2 interface”.
But I can not understand why give me this alert when I use a layer3 device?!
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Aug 29, 2012
I have a Cisco 2811 with fa 0/0 as my bearer, and a switch module for internal clients.
I have an issue with my fa 0/0 flapping, I want to move that ip configuration to fa 0/1
as this is a branch office I am reliant on the bearer port to give me coms so changing the IP addresses is difficult.
Has any one tried this with a TCL script?
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Apr 23, 2012
I always though that sh mac address table dynamic interface xx/xx/xx was a subset of "sh mac address table" 6590 Version 12.2(33)SXI I have two mac addresses on downstream switches that will only show up when using
sh mac address-table dynamic interface Te4/10
* 903 0050.77a9.6e3c dynamic Yes 0 Te4/10
* 903 0050.77a9.5766 dynamic Yes 0 Te4/10
when using "old faithful"
sh mac address-table | inc 6e3c
*nothing*
or
sh mac address-table dynamic | inc 6e3c
*nothing*
nothing shows up?this vlan has no layer three interfaces
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Jun 17, 2012
It is my understanding that the FWSM for the 6500 series switches uses a 6 port Etherchannel on the backplane to communicate with the 6500 series switch.Can you shutdown vlan1 on the switch and still communicate with the FWSM? I was under the impression that you could not (although I am looking at a config with it shutdown)
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May 20, 2012
I need to only allow 5 Mac Addresses on a range of ports on a 2955 switch. If I do the following it only changes the first port in the range:
interface range fastEthernet 0/5 - 10
no spanning-tree portfastswitchport port-securityswitchport port-security maximum 5switchport port-security violation restrictswitchport port-security mac-address 00:1D:24:25:F7:AA
[Code].....
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Aug 16, 2012
Having 2 router with 2 sub interface configured with HSRP. The server sending the data have the route default gw xxx.xxx.xx.252 HSRP address. But on of the routers did got HW problem so we did shut it down, R2 with IP xxxx.xxxx.xxxx.251, problem so the traffic didn't go there correct when was using the HSRP address some packaged went there but not all of them no blocks in the logs. But then we did change the server direct to to the working router R1 xxxx.xxxx.253 everything did start working fine again. was working fine. Logs i got in the router was max tcp half-open connections.
I am wondering if something wrong in the configuration below and why the traffic didn't got there correct when using the HSRP address. Its working fine when using R1 IP address. The devices are 2 Cisco 2620 routers.
R!1
interface FastEthernet0/0.192
description Prod_Inside
encapsulation dot1Q 192
ip address xxx.xxx.xxx.253 255.255.255.192
ip access-group Inside_Outside in
ip verify unicast reverse-path
no ip redirects
[code]...
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Nov 1, 2011
I've set up my 3560 to do routing. Now, I'm looking for a way to apply acl restrictions to the vlan interface ip address itself.
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Jan 5, 2013
I'm experiencing strange issue with my WS-C3750X-48T-S.
Model number: WS-C3750X-48T-S
System image file is "flash:/c3750e-universalk9-mz.122-55.SE3/c3750e-universalk9-mz.122-55.SE3.bin"
This switch is situated on a remote site and on the 6th of January it was rebooted.
I still do not know the cause, but it might be power outage or smth. We are still checking. After the reboot I've noticed that one port on this cisco switch is in 'notconnect' state, while I'm pretty sure it should be 'connected'.
I've tried to shutdown the port adminstratevly and do the 'no shutdown' but this port remained in 'disable' state.
#sh run interface Gi1/0/5
Building configuration...
!
interface GigabitEthernet1/0/5
[Code].....
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Oct 28, 2012
What is the command to shutdown a cisco 1841 (say, to add a module)? I know how to reload / reboot, but does not seem to find any command with an obvious name.
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Feb 12, 2013
I have 4 public IPs on Router 3845 interface FastEthernet 0/0/1. IP as below.
50.200.2.2
50.200.2.3 secondary
50.200.2.4 secondary
50.200.2.5 secondary
I wan to allow ports 80 to 90 on 50.200.2.3 for my webserver (192.168.10.50)
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Apr 2, 2012
If i replace a card of the same type in the same slot will I lose the configuration for that card or does it live in the backplane of the device?Is there any special command I need to run to replace the card or can i shutdown the 4507r-e and just swap out the blade?
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Aug 11, 2011
I have a doubt. In my environment I have two Switch 3750-X in stack.
My question is: How to shutdown remotely only a switch in stack?
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May 6, 2013
I have a single 2960s without stack module. The stack port has a status of down, however I'd like to disable it so that it does not generate a false alarm in my NMS. The documentation states that there should be a command "switch 1 stack port 1 disable" but the switch (running 15.0(2)SE2) doesn't seem to be available. Is this a dcumentation bug or is the command not there at all?
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May 14, 2013
I have a Routing issue with one of my SG300-28P units. It has several Trunked VLANs. I think I habe Narrowed it down to a Default Route on the offending SG300 though I cannot see to change or delete any of the Static Routes on the unit. I can Add Routes with no issues, but once Added I cannot Edit or delete them.
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Oct 12, 2011
I have just taken over the management of a Cisco Catalyst 6540. The os image has been erased from the switch (as I have just been informed) and that we need to install the os ourselves.
Any hints on how to install the OS on a switch with no OS installed!
I've started reading on the Internet but am currently confused by "supervisor/msfc", "Cisco IOS/CatOS" and "hybrid/native".I think that we would want ideally to install Cisco IOS using the Native Mode but how would I go about doing that?
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