I have cisco WS-C2960S-48FPS-L stacked. Weekly twice, my PoE connections are dropped and when the device is restarted, everything starts working normal. This issue happens weekly once or twice. [code] I can see that there is a bug id : CSCtg86211 and no work around for it. Any updates received from Cisco TAC ?
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I am configuring a Cat 2960 port for connecting a VOIP phone, authenticated by MAB. On connecting the phone, I get the port authenticated and assigned to the correct VLAN, with LLDP-MED advertising the correct voice vlan. However, I then see no traffic from the phone on the switch. I can see the MAC address of the phone is learned in the right VLANs, but the mac address is showing as "Drop", which normally means the address is statically configured to be blocked. There is no static mac address table blocking configured on the switch.
Switch Version
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 50 WS-C2960-48TC-L 15.0(1)SE3 C2960-LANBASEK9-M
Port configuration
interface FastEthernet0/1
description "Standard user port"
[code].....
I have some remote locations that connect to my ASA 5510 cluster (Aktive/Passive) using the Cisco VPN Client, from which the connection gets disconnected at random intervals (could be 5 minutes, but sometimes after 15 minutes). However, some other remote locations do not have this problem. All locations have the same VPN client configuration (distrubited by pcf file).
I already disabled isakmp keepalive on the ASA but this did not work. If I read it correctly, the Cisco vpn client logging shows that the ASA initiates the ending of the connection.
Code...
I have an existing stack of 4 x 2960-S switches connected by stack cables.I would like to add another 2960-S switch to the stack but am unable to as the 2960-S will only allow 4 x 2960-S switches per stack.how I would add the 5th 2960-S switch to the existing stack of 4 x 2960-S switches.
View 12 Replies View RelatedI have a 24 port 2960-S that is not communicating with a 2960-LST that it is directly connected to over fiber. The link is up on the LST but will not come up on the -S. What command should I use to bring up this link? I have tried no shut from the (Config-if)# prompt.
View 3 Replies View RelatedMy DIR-655 drops WiFi connections every few days. All wired connections are fine. Rebooting the router fixes the problem at that time. Cable modem works perfectly fine. [code]
I'm sure I'm missing some devices, but that should give you the general mix of wired/wireless devices that I use. I'm single with visits from my son every other weekend, so network traffic is not that high at my house. I've had this router for a couple years now and didn't use to have this problem. I've been updating the firmware, and I suspect this problem happened after on one those updates. I just don't know which one. Also, I didn't use to have any neighbors with Wireless Routers (that I could detect), but recently there have been 2 who have gotten them. I was hoping this was a problem that D-Link was aware of, but that does not seem to be the case. I would hate to have to go out and buy a new router (not D-Link).
Our Cisco ASA 5510 running 8.4(4)1 just started dropping packets and our AnyConnect clients are seeing horrible performance. The system is extremely slow compared to just a couple days ago.Nothing has changed on the system. I can post the configs if needed.
firewall# sho int
Interface Ethernet0/0 "outside", is up, line protocol is up
Hardware is i82546GB rev03, BW 1000 Mbps, DLY 10 usec
Full-Duplex(Full-duplex), 1000 Mbps(1000 Mbps)
Input flow control is unsupported, output flow control is off
Description: == WAN Interface ==
[code]....
I have done a "sho vpn-sessiondb detail svc" and I can see the dropped packets of the individual users, but cannot see why the packets are still dropping.how I can correct this and restore speeds?
I am using Windows 7 Home premium SP1 (x86). I can connect fine and after a (seemingly random) amount of time the connection will drop (at least according to windows). I can also easily reconnect without a problem, but it will not pick back up the connection automatically, which is a problem because I use programs that need to access the internet and Often leave large files to download while I'm sleeping or not home. So If I'm not sitting at my computer to manually reconnect, then whatever i'm trying to accomplish doesn't get done.I'm using the ALFA AWUS036H USB wifi adapter. I had previously been running windows XP and this same thing would happen (though, much less often) but when it happened in XP it would automatically reconnect in a few seconds. I downloaded the drivers from ALFA's website incase the ones on disk were not up to date, and I tried both of them (they have a "normal" and "power control driver" option) and the problem remains. Also, I've never used an external wifi adapter before so I'm not sure if its supposed to work this way, but there are 2 "signal strength meters" in the system tray the standard windows one that you can click on and see available networks or go to windows "network and sharing center" and then there is the ALFA one that you can click on and it takes you to the ALFA wireless LAN utility, where you can also get a list of available networks.According to windows there is a problem with the connection, however according to the ALFA wireless LAN utility, the connection is fine (green bars means good connection, red bars means no connection)When clicking on the Windows "signal strength indicator" in the system tray, it shows 1 of 2 different problems (notice the differences that I've highlighted with red boxes). No matter which one happens I can NOT access the internet. Despite the "problems" shown above, the ALFA wireless LAN utility shows that its still connected (while windows is showing a connection problem)To reconnect I switch to the "profile" tab (which is just a list of neworks that i've previously connected to) and double click on the network. In this case it will be Enotria Public.... the same one that (according to the ALFA wireless LAN utility) I'm already connected too After clicking on the network, the ALFA wireless LAN utility "signal indicator" in the system tray will briefly turn red (signaling NO connection) while it "reconnects". Then it will turn back to green, and Windows network manager/signal indicator (whatever you call it) will proceed to reconnect as well. After this happens, all is good and I'm reconnected and can access the internet.
As you can see in pics above the ALFA wireless LAN utility is always connected, and it never drops the connection but even so, the internet will not work when Windows drops the connection. However, When reconnecting I can access the internet BEFORE Windows reconnects. (I still have to reconnect as described above, but after I do so I can access the internet before windows FINISHES reconnecting) The tab shown in this picture was a web page that I loaded BEFORE Windows ever reconnected, and it is a page that I have NEVER viewed before, so its not just loading it from cache.
[code] When the connection is online, the speeds are fine- the issue is the 2-3 times a day when the connection drops off. The error that we are getting is "cannot connect with primary dns server" however in our attempts to restore the connection we have: [code] is there some issues in the area that we are not aware of?
View 3 Replies View RelatedI have a WRT110 router (firmware v. 1.0.04) and a PC and an XBox 360 connected to it (both via cable). Every 15-20 minutes the connection is dropped for appr. 1-2 minutes. I tried modifying several router settings, but the connections are still being dropped
View 9 Replies View RelatedI have two XPS 15 (L502x) laptops (purchased in March '12) with Intel Wifi link 1000 BGN adapters. On a regular basis both laptops lose their connection to the internet (via FIOS), at the same time. I'm convinced that is not FIOS or my router. I have a Dell STUDIO 8100, an iPhone and iPad, and these wireless devices do not lose their connections. Sometimes I'm able to resolve the issue by using "troubleshooting" via the adapter, often restarting the laptop and/or the router is the only way to resolve my problem. I've run the Dell Support software, it indicates no drivers are available for update, so I assume I'm current.I've read about turning off 802.11n, I've read about problems w/ power management and conflicts with wireless.
View 10 Replies View RelatedI have a WRT400N and approximately every 30-45 minutes the router will drop all connections (wired and wireless), all the lights will go out and then power light (far right light) will flash for a minute or so. I have tried connecting directly to my modem and I have no problems at all.
View 7 Replies View RelatedI'm trying to configure a L3 switch with some vlans. Despite we add a "ip default-gateway", that is displayed on the "show run", when we look "show ip route" there is no default gateway or gateway of last resource.On the show running we see the following:
interface vlan 31
ip address 10.221.31.177.255.255.255.0
!
interface vlan 32
ip address 10.221.36.125 255.255.255.240
interface vlan 36
ip address 10.221.36.105 255.255.255.248
ip default-gateway 10.221.36.105
One server connected to the vlan 32 is not able to ping the switch svi on vlan 36 (10.221.36.105).When we look the "show ip route" we see that the default gateway is not set.Ip routing is enabled on the switch. I tested the same configuration on my simultator and it works fine.I'm attaching the "show running", "show version", "show protocols" and "show ip routing".The ip routing is enabled on the switch!
i am wanting to log dropped and oop packets on a c3825 isr with ios12.3(11)T3. on other routers(like a 2951 running 151-4.M2)i can state ip inspect log drop-pkt and it will log to buffer or syslog all dropped and oop packets. can i do this on this 3825 another way
View 1 Replies View RelatedI've been fighting with my E2500 since I got it back in June with lag, dropped connections, etc. It's a bit intermittent but can hang around for hours at a time when it kicks in. Restarts but the issue always comes back. Most noticeable while gaming online or on a VOIP program such as Team Speak. Generally when it happens If I'm monitoring my Team Speak connection the incoming packet loss shoots up between 20-30%, starting to drop out every other word or so. No out going packet loss. The connection drops are random between computers (I have one mac and one pc in the house) where one will be fine and the other wont, or when the whole system will stay connected and drop all transfer. In the case of this last one it's not my ISP's connection as any streaming happening between one computer and an Apple TV device will also cease. I've also swapped back to my old router (an older model linksys) and all problems have stopped. Fully rebooted and reconfigured the router about 3 or 4 times and am on the latest version of firmware (1.0.003). It was much worse on 1.0.002 but still very noticeable on 003. Also no difference with a different wireless adapter. I've tried the chat technical support but all they did was take 45 minutes to tell me how to reboot my router after telling them I already had.
View 1 Replies View RelatedI believe i've enable jumbo frames on our Nexus 7010, one in each data-centre.
system jumbomtu 9216. Also on the interfaces mtu 9216. And can see MTU 9216 bytes, BW 20000000 Kbit, DLY 10 usec on the port-channel between them. Though when i ping between vlans at each site with large packets i get 30% drops and if i set the DF bit in IP header to yes - 100% loss.
8798 bytes from 10.200.12.2: icmp_seq=19 ttl=254 time=8.024 ms --- 10.200.12.2 ping statistics ---20 packets transmitted, 14 packets received, 30.00% packet loss
We are having some issues between our (2) Windows 2003 Storage servers and Windows 7 client machines. The issue that is occuring is that the users indicate they temporarily loose network connection to their mapped drives on these servers. This may happen several times a day. The regional manager wants to say it's a network issue but I believe it's something b/t the server and workstation.I like to know if there are some additional parameters, debugging or configuration that might be recommended to perform on our (4) Cisco 3750G-48port POE switches (stacked) that would determine that it's not a network issue. I do not see any errors or collisions on the ports that the servers are connected nor am I seeing much of anything wrong with the user ports. There are only 3 vlans at this office, vlan 30=users, vlan 20=servers, vlan 40=mgmt.
View 7 Replies View RelatedI have a problem with the 6500 not exporting netflow data. They are not exported due to no fib.I have read somewhere that this has something to do with VRF. VRF are running on the router.ip flow ingress has been applied to desired ip int.Is there anything I could do to make it export netflow data?
VSS-core-XXX-rs1#sh ip flow export
Flow export v5 is enabled for main cache
Export source and destination details :
VRF ID : Default
Source(1) xxx.xxx.83.253 (Unknown)
[code]....
i have issues logging into one of our core switches.its a 6509 switch but i cannot log in remotely.when i try to console in on the console port, i cannot log in instead i get the above error message.I haven't rebooted yet but would it solve the problem as this switch is a production switch.
View 6 Replies View RelatedOn one of our N7K, we have some packets dropped by the COPP policy in the class-default class-map. Partial results of "show policy-map interface control-plane" not so long after clearing the counters : [code]
what traffic is dropped by the policy ? Is there any logging possible ?
As above, I got a problem with C3750e, ios c3750e-universalk9-mz.122-58.SE1.bin, when send AF41 traffic passing through it. My topolygy is as following
WAN link <----------> G0/0/2.100 - ASR1002 - G0/0/5 <---------> G1/0/1 - C3750e - G1/0/3 <--------> G0/0/1 - ASR1004
On this C3750e, I turned on mls qos, trust dscp on both G1/0/1 and G1/0/3 and no else is configured. ASR1002 G0/0/2.100, i applied the CB shaping fror AF41 traffic.
C3750e#sh mls qos
QoS is enabled
QoS ip packet dscp rewrite is enabled
C3750e#sh mls qos int g1/0/3
GigabitEthernet1/0/3
trust state: trust dscp
[code]....
Then, from ASR1004, i send ICMP traffic with TOS set to AF41 (136) and i found out that
1. The traffic is dropped on c3750e
sh mls qos int g1/0/3 statistics
GigabitEthernet1/0/3 (All statistics are in packets)
30 - 34 : 63 63 48 86 1534
2. The traffic never get hit into AF41 class in ASR1002 ? Why C3750e dropped this AF41 traffic? and what can I do to fix it?
My management has tasked me to give them a high level overview of the different switching we can choose for our new building.
This is what I know so far.4 Closets, each closet has 450 ports,One MDF room that is will contain one UCS Chassis and a Nimble iSCSI SAN.
I am working on the spreadsheet and it looks like this (Not totally filled):
2960s3560x3750x45064510Approx cost (Each, 48PORT, POE+, 10G uplink, Dual PS, IP BASE)
6K7K8K45K75KMax Capacity192432432192384Backplane speed206464520520ProLeast ExpensiveStackable to 9Stackable to 9ProDual PSDual PSDual PSDual PSDual PSProLayer 3 opt
Layer 3 optDual SupsDual SupsConExpensiveExpensiveConNo Dual PSConLayer 2 OnlyCannot stack more than 4
For the MDF I would like to use 2 Nexus 5548's with FEX's, and the layer 3 daughter board. For the IDF's I was thinking of two 4010's.
I am using a 3750 as a default gateway for multiple Vlans on a few 2960 switches. The trunk lines are configured and working and I have assigned ip addresses to each of the Vlan interfaces on the 3750. My issue is that I can only ping the ip address on the Vlan interface of the 3750 if I have a working computer plugged directly into the Vlan on the 3750. I only have 3 vlans on the 3750 that have hosts directly connected (vlans 2, 10 and 40) the other vlans ( 20 and 70) don't have any clients plugged into them on the 3750 but the hosts reside on 2 different 2960s that connect via trunk ports. How do I keep the vlan interface on the 3750 switch pingable when I don't have hosts directly connected in that vlan on the 3750? (yes, I have enabled ip routing on the 3750)
View 5 Replies View RelatedI have a Cisco SG 300-20 as the core switch, layer 3. It is 192.168.4.6 on VLAN1 and 192.168.5.1 for VLAN2 (VOIP). All the ports are set in trunk mode. DHCP relay is setup on this switch.
The phones connected into a layer 2, Catalyst 2960-S switch. All ports are set in trunk mode. Default gateway on it is set to 192.168.5.1.
DHCP for both VLANs is provided by a Windows Server 2008 R2 server (the relay IP 192.168.4.15).
There is also an ASA 5510 in the mix which is 192.168.4.1. It has a route added to it for the 192.168.5.0 network to go to the SG 300 (192.168.5.1).
Just the two switches can ping each other on the 192.168.5.x network when I "add vlan 2" to the trunk port that is connected between the SG 300 and the 2960. The phones don't get DHCP on the 2960 switch. And I cannot ping 192.168.5.x from the ASA or anything else on the 192.168.4.x network.
After a bit of reading on intra-vlan routing for the SG 300 switch, I am thinking the SG 300 has to be the "center" of things so I need to make it 192.168.4.1 to be the gateway for both VLANs and change the ASA to 192.168.4.2 for VLAN1, etc. And I really can't do asymmetric routing with this switch.
Does the Model "WS-C2960-24PC-L" Supports IP Routing or not?
View 9 Replies View RelatedI'm having a strange problem where I'm not able to get through a Cisco 2960-S L2 switch when connected through vpn, while LAN-WAN traffic is working fine.The situation on site is the following:When inside the network I'm able to get to the internet without a problem. The problem is within a vpn-session. When this session is succesfully started I can ping and manage the Cisco 2960-S switch, but I can't ping or manage the Dell switch from my laptop. I can however ping the Dell from the Cisco-switch. [code]
View 7 Replies View Relatedset up my QoS on two 2960
-------------------- ------- ------- ------------
PBX Asterisk |----|2960-1 |------|2960-2 |-----|Voip client2|
-------------------- ------- ------- ------------
-------------- |
[Code].....
This will be this configuration for all input interface right ? For the Output part I'm lost, what do I have to do ? And for the 2960-2 do I have to put the same configuration ?
we hava a couple of 2960 switches and we are logging to a syslog server. Ports keep going up and down is it normal severity (error) ?
View 2 Replies View RelatedWe recently updated a site2site link to metro ethernet, ISP call it 100mbps LAN Extension, but to me it is just QinQ over fibre connection. Most went well, one thing (annoying to me) is we can not ping our switches on both ends anymore.
We have a 3750 in headend and another 2960 on the other end. I used to be able to ping/telnet to the management IP from one to the other. Now we can not. I think the ISP is applying some configuration on ports of their customer-premises equipments (both are Cisco switches) but agent in ISP told me no. I thought there is some configuration on Cisco switch to block "MAC discovery" but i just can not remmenber what was that and google also failed me this time.
I have got two links from the same ISP, primary and secondary and connected to two different switch. The ISP have passed the trunk vlan of 30, 31 and 32 on both of the links. The ISP can't provide stp. I have got another managed 2960 series switch. How can I obtain failover on switch level.
View 2 Replies View RelatedI have IP phones connected to 2960 i want to segregate traffic traffic comming from IP phones which has a COS value of 5 and want to allocate a band width of 200 MBPS for those traffic .
Can any one share sample QOS configuration for achiving this in 2960 ?
My cisco ios 2960S is crashed and the ios is gone The issue is i am connecting my pc to management port and i give switch:
IP_ADDR x.x.x.x/255.255.255.0 and also switch: DEFAULT-ROUTER
But i can not copy tftp to flash,according that i have L3 port (management) why should i use xmodem?
I have 2 switches connected Via MM fiber cable one of them SRW2024-K9-NA with MGBSX1 Transceiver and the Secand One 2960 with GLC-SX-MM
are there is any configration must be done or not ?
