Hi,Got a case with interesting problem. For some reasons ping packet is sent to switchcard who haven't mac entry for it. If switch haven't mac entry for destination host, it sends packet to all his ports, including routers backplane port. Of course, ...
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Forum Posts
Resolved! Are Cat 4507R Supervisors hot swappable
Hello,I received an replacement supervisor from Cisco to swap out the failed standby supervisor. I wanted to check if I can pull out the failed supervisor supervisor and insert the replacement supervisor while the switch is still on. In other words...
Let me ask this....I work at a local school district. A site (school) has a pesky problem of slowlessness. Ping times (even on local lan segment are 1000+ ms)I applied standard troubleshooting, eventually starting wireshark....now in 5 secs, one MA...
Hiconnected DSL directly to 2900 series router , but as DSL public IP is not static (dynamic) its difficult to access Router when out of home, any other means to access router without static IP thanks CP
Resolved! Native VLAN Question
In our network environment, we have a 2960 switch sitting behind our router. Off of this we have a lot of external connections, like our external DNS, firewall, and VPN concentrators. I've configured a VLAN other than the default, moved everything in...
Please I dont seems to see what the issue is here.Find below the output from the sh runSoneraCloud#sh interfaces gigabitEthernet 0/1 switchportName: Gi0/1Switchport: EnabledAdministrative Mode: static accessOperational Mode: static accessAdministrati...
Hello All,My question relates to IP PIM RP filtering and the resulting log entry:PIM-6-INVALID_RP_JOIN ....An example of a log buffer from one of my switches. You can see these reocurring logs slowly fill up my log buffer and syslog server:Feb 20 10:...
We have the 3750G with the IOS version 12.2(35)SE5. Does this IOS version and switch support the TCP Window Scaling detailed in this doc? The doc says Release 12.2(8)T. And I don't see the 3750G or the 2960G platforms listed in the doc. I'm guessin...
I am trying to block traffic from one VLAN to other VLAN's and even after applying an ACL with "deny ip any any" traffic is still going through. Here is my config:Note: Both switches are setup in a GLBP configurationAccess List:ip access-list ext...
I have a 3560X switch with interfaces 36-48 on the same LAN. All interfaces are switchports. Hosts on 38, 39 and 40 are multicast senders: all sending to the same single multicast address. Hosts on 36 and 37 are receivers, having joined that multicas...
Hello everybody, I have been wondering about a issue with this situation. On a customer network, there are some servers connected to a switch Cisco, with portfast and BPDUguard at interfaces where servers are connected. The thing is that these server...
I am trying to put the finishing touches on my network using loopbacks on all my switches, CATALYST 3750G PoE48 switches. This is something that I have done before and has never been an issue until now. I am able to ssh into all of my core and distr...
Hello,I have a problem with the Cisco 881 router at one of our customers.It seems that after a "no shutdown" has been given on the Vlan interface, it still goes back to "administratevly down"after a reboot.So when I restart the router I always have t...
Resolved! System Uptime > 56 Years?
Hi people,Sorry if this has been answered before, but I've done some trawling and can't find anything just yet (but I'll keep looking!).I've got a Cisco 4510 which shows a system uptime in excess of 56 years. This is presumably a bug...can anyone pl...
Resolved! Core Switch reboot
Hi teami am using Cat 4507 as core switch in the network..The switch has rebooted automatically and have not generated any related logs in syslog..i am putting down the capture of show version..this says last reload reason is abort at PC 0x0 -------...
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