Don't know if this is right section of NetPro forum to bring up my problem. I have 871 router configured as NTP master. It works as a gateway for a small windows network with a domain controller. I want DC to pull the time from the router and configured the router as follows:
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I am experiecing issues with HSRP.I have two 7200 core routers connected via one portchannel layer 2 and i set up the HSRP.The switch 01 is the master and 02 is the bkp.the problem is, the bkp router can´t see the master and there are a lot of loggs with active-speak and can´t see the master. the configuration are ok, i just check and recheck but there are no mistakes. [code] the configurations are ok, but the router can´t see each other, just in the vlan 500 the other vlans are ok.
View 7 Replies View Relatedwe have cisco WS-C6509-V-E with IOS version 12.2(33)SXI4; s3223_rp_IPSERVICESK9_WAN_M) running on a switch. I am trying to configure the command "mac-address-table synchronize" under global config mode. But when I enter the command Cisco(config)#mac-address-table ?It doesn't show the synchronize option?
View 3 Replies View RelatedWe 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?
I would like to know if it's possible to change a master in a 3750 stack without rebooting it?I searched in Cisco documentation, in the forum, and I googled it but I didn't find anything.
View 3 Replies View RelatedWe have a stack of a 3750E with a 3750X, when we turn off the master, a disconnection occurs for around one minute while only one request timeout is seen when the slave is turned off. Is this normal? Details: in other words, when the slave switch is elected as the new master all the port-channels and some physical ports become in 'down' state before reobtaining the up state again, this results in a one minute outage. The question is: is it normal to have a layer2 control traffic interruption when the master fails and re-election occurs and if yes, what is the normal downtime in seconds. the layer2 control information such as port-channels LACP protocol are not synchronised to all slave switches by the master?
View 7 Replies View RelatedAbout an hour ago I had the master switch on one of my 3750x (WS-C3750X-48PF-S) stacks crash. The only two items we've found that could have caused this issue are the roughly 1.3 million big buffer misses and several of the following in the syslog
SLT:WARN:No exporter configured for smartlog! I do not have smartlogging turned on, nor is there a netflow exporter configured
sh logging smartlogsmartlog is disabledsmartlog exporter:smartlog pkt length: 64 Total pkts processed: 0Total DHCP Snooping pkts processed: 0Total DAI pkts processed: 0Total IPSG pkts processed: 0Total ACL pkts processed: 0
I did not see any traffic spikes prior to the crash.
This stack has been stable since it's last IOS upgrade from 12.2(58)SE1 to 12.2(58)SE2 back in October 2011 so this has me a little worried.
Setting up NTP. Currently the source for NTP within our network is our core 6500.Currently the NTP source for the 6500 are internet based NTP Servers. I would like to configure the 6500 to respond to NTP messages as the NTP Master. However will the 6500's source remain as the internet based NTP Servers?? In other words if the 6500is configured to be NTP Master, where would it get it's time from?
View 5 Replies View RelatedI have two like switches in a stack (WS-C3750G-48PS 15.0(1)SE2 C3750-IPBASEK9-M). Switch#1 is the master and is the one that needs to be replaced. Can I force Switch #2 to be the master, then power down switch#1, remove switch#1, insert the replacement, and then power on the newly added switch without shutting down or rebooting switch#2?
View 3 Replies View RelatedWe have 2 3750 24 port fiber switches in a stack and we would like to change the member to become the master. Both are running the same IOS and they are alive on the network. I read that you can change the who becomes the master by setting the priority number higher on the member, which we did. However this requires a reboot of the member to take effect. Is there a way to force this without having to reboot? One other note, both switches in stack have a single gig connection that goes to the core (6500). One gig link is blocked due to spanning-tree and this is on the member that we want to become the master.
View 3 Replies View RelatedI have a stack of 2960S (c2960s-universalk9-mz.122-55.SE2.bin) and the master has failed (used to have a priority of 14). The second switch has become master (priority 1) as can be seen below: [code]
If I connect a new blank 2960S (same IOS) through the stack ports, will the master sync its config to the new one without causing problems?As I understand the new blank switch will also have a priority of 1 and will by default be numbered as 1. So if the config is correctly synced and I later on want to make switch 1 the master, I need to set the priority: [code]
I'm trying to do a Master reset on my Catalyst Express 500 (WS-CE500-24TT v01) and I'm having troubles with this. url...I do everything as it says, but when I plug the cable and I pull up the Web browser nothings appear, just the message that I don't have a Internet connection. The LED port on switch don't stop blinking as LED setup either. Is there another way to do the master reset?
View 0 Replies View RelatedI have 2 x 3750 stacked, the port number of the master switch is gigabitEthernet2/0/1, slave as gigabigEtherent1/0/1.
Can I change the port numbering so that the master switch gets GigabitEthernet1/0/x?
i have a cisco 1900 series router from the isp and we connect it the our router the rv042 small biz, and we have here a cisco catalyst 2950 switch with just default configuration connected to the hosts.
my problem is from time to time that the connection is lost there is no connection with the router and the only solution is to turn off and on the cisco 1900 router and the connection will be back.
do we need to configure the routers and switches? what do you need to configure?
why my router will not synchronize with an NTP server located an off-site facility; the NTP server is located at the Naval Observatory. I have a Cisco 7200 VXR IOS 12.4 The clock and calendar both are set correctly.
View 2 Replies View RelatedWhen i connect the Router 2821 through the Consol get error message at regular interval of time %ENVMON-4-FAN_LOW_RPM: Fan 1 service recommended.
View 2 Replies View RelatedI was looking to setup a y configuration of routers with a modem going to master router, then from the mater router LAN ports to two other routers wan ports to give a guest and private network. I understand that this will all work fine for normal web surfing but can be very long winded when setting up port forwarding which i would need on the private network so I was wondering if I could get around this by setting up a DMZ on the master router for the private network router allowing all the port forwarding to be taken care of by just the one router. Would this work and would the two networks still be secure from one another.
View 8 Replies View RelatedI am considering the e4200 Vs the Asus RT-N56U router -- if " download master" type of functionality possible with the e4200 ?(Its a little app that comes with the asus router that allows you to download files directly to the USB storage even after the computer is switched off)
Could I do something similar with the e4200 ?
How can I measure a respond time from a switchport to another? What I intend to do is to measure packets transmission from a server. I have a Cisco 3750G in stack, and the server is connecting to it with a 1GE NIC. How do I measure from Cisco prospective? Any tools available from Cisco to measure such respond time? I have a PRTG on bandwidth management on this particular server switchport and it is around 45-70Mbps, which is less than 10% of 1GE interface.
View 3 Replies View RelatedI have an doubt about some port in 2960.He have 2 SFP and 2 Fixed Ethernet. Can I use these 4 ports in the same time? Use 2 Ethernet and the 2 SFP with Fiber?
View 2 Replies View RelatedWhat is the installation time for the Network Processor engine is:
NPE-G2=7200 series NPE-G2 engine with 3 GE/FE/E ports ,Do you reckon it can be done in two hours?
i am setting a C1841 to sync its time with another C1841 over net. here is my setting with dont work !
SERVER:
clock set 23:01:00 26 MAY 2012
ntp master 5
ntp source f0/1
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I have EA4500 acting as a router on domainless all-Windows network of two XP machines.Unfortunately, EA4500 aggressively grabs the role of the Master Browser (I am talking about Computer Browser Service) on the network (regardless in which order you power the devices up) and then doesn't serve as a working Master Browser - both Windows machines stop listing the network computers in the "Network Neighborhood" and incur massive timeouts when attempting to view the listing.A quick look with 'browstat.exe status' reveals that indeed the router has announced itself as a Master Browser device, but returns errors when you query it.Quite predictably, without the router, both machinces figure out amongst each other who will be the Master Browser and everything works fine. The problems begin only when you add the router to the network.
1) Is there any way to make EA4500 work like a full-blown Master Browser (the one that not only announces itself, but also serves as such)? having a Master Browser integrated in "always-on" router would really improve the predictability of the network.
2) If not, is there any way to disable the Master Browser on EA4500? For now I managed to achieve that by assigning the router to different workgroup name, but this is lame, as I now can't connect a disk storage to the router and use it within the same workgroup.
My environment have two device ,a cisco css11501 and a cisco 2960 ,when I reboot CSS11501 then 2960 shutdown fa0/41
I command "sh logging | in 0/41" just up down two time,not five times in 10 seconds
.May 17 11:13:18: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/41, changed state to down
.May 17 11:13:19: %LINK-3-UPDOWN: Interface FastEthernet0/41, changed state to down
.May 17 11:14:53: %PM-4-ERR_DISABLE: link-flap error detected on Fa0/41, putting Fa0/41 in err-disable state
.May 17 13:44:35: %LINK-3-UPDOWN: Interface FastEthernet0/41, changed state to up
.May 17 13:44:36: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/41, changed state to up
is there a way to show the last time a port was active/inactive on a catalyst 4500?
View 3 Replies View RelatedIs there a way to configure a switch (3550, 3560,3750) to disable a switch port if it has not been used for a specified time period such as weeks or months. Say you want the switch to disable switch ports that have been "abandoned".
View 8 Replies View RelatedI have a pair of 3560's configured with dot1q trunks between them carrying a number of VLANs.
Once deployed there will be a requirement for these physical trunks to be disconnected from time to time. Knowing that this is inevitable I am trying to minimise the period of time for the trunks to recover once the physical connectivity is reinstated.
All of the VLANs on the switches are configured for Spanning Tree Rapid PVST. Current time for the trunks/VLANs to come up is around the 4 second mark.
I've just plugged in 4 Nexus5548 switches and ran through the initial setup without any issues. However, the fans seem to be stuck on full speed. At the moment they're the loudest thing in the server room.
I know this isn't the most recent OS however I was hoping to avoid updating if necessary as I don’t have the service agreement linked to my account and can’t download the update without it. Is there anything else I can try first or anything I have missed?
Software BIOS: version 3.5.0 loader: version N/A kickstart: version 5.1(3)N1(1a) system: version 5.1(3)N1(1a) power-seq: Module 1: version v1.0 Module 3: version v2.0 uC: version v1.2.0.1 SFP uC: Module 1: v1.0.0.0 BIOS compile time:
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I need to enable/disable a mac access-list on a 2960 scheduled by time. The switch has lanbasek9-mz.122-44.SE6. As the mac access-list can not support time ranges, I tried EEM but seems like it is not supported in this device.
View 1 Replies View Relatedconvergence time in case of stack master will be switched over to other switch.In my understating, when the stack master will be switched over to other switch based on election algorithm, convergence time will be less than 10 second.
I tried to calculate concersion time during fail over testing but convergence time was 21 second. I think it is too long...
Expected reasons
・I configured Rapid Spanning tree protocol between L3 and L3. (But RSTP's convergence time is 2~3 second..)
Our office lan network is in 192.168.0.0/16 with 300 nodes and 30 server .Since its a large broadcast domain some times it takes large time for copying files.How can we avoid this problem with out changing the subnet.Also how to avoid broadcast storm.we are using cisco 2950 series switch.
View 10 Replies View RelatedI've beating my head against the the above said problem for a quite a while. Our client has a very strict security policy and they require all standard protocol to comply with the expected behaviour. It was discovered that their 3750 switch running c3750-ipservicesk9-mz.122-25.SEE3 software and configured to sync its time with an external public NTP server triggers IPS signature - DNS Info leak. The problem is that the switch initiates the packet on UDP port 53 and not as I would expect on port 123 for NTP. Of course I can tune the IPS sensor and make it not to fire this signature but the client needs to know why it is happening and if it is faulty IOS software that doesn't comply to the rules.
View 2 Replies View RelatedI have a problem with my 802.1x Solution in ACS Version : 5.2.0.26. The hours between my ACS and the AD lost synchronize, for that reason the user in my network can't authenticate in the Solution. when i see the hours was different for the AD in 5 minutes, i have to force again the common ntp server 172.25.0.34 (which is ip ntp server). I don´t know why is the reason for lost synchronize, maybe could be a bug.. or samething that i have to configurate in the ACS or AD.
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