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Forum Posts
Hello guys,Good day!We are planning to replace Switch (WS-C2960X-24TS-L) to new switch (C9200-24T-E). We have 4 SFP links (SFP model: - GLC-LH-SMD/1000BaseLX SFP) in existing switch. Can we use same SFP to the new switch (C9200-24T-E)?? or do we need...
I still couldn't understand the meaning of both the task specified as task1 and task 2. If SW1 is running dhcp snooping so how could you just enable option 82 for sw3 and disable it for SW2 simultaneoulsy. The command "no ip dhcp snooping information...
It took me a long time to find out why I couldn't connect to my Cisco C1000-8p switch. Turned out that the port-channel set up with GLC-LH-SMD SFP's does not work. When we remove the port-channel and connect over a single trunk setup the connection w...
In 17.18.2, configuring "ip arp inspection rate limit <x> burst interval <y>" will be accepted and change the runtime configuration, but it will not be reflected in running config or startup config. If you upgrade to 17.18.2 and it was present in the...
Hi everyone, Yesterday we ran into Cisco bug CSCWQ81084 in our network. The issue occurred within an STP instance consisting of two Catalyst 9300 switches and three 1300 switches. Interestingly, the problem only appeared during physical link events, ...
I tried running the "ip multicast-routing" command in packet tracer router but it show "invalid input detected at '^' marker". Is multicasting disabled in packet tracer or something?
Hello everyone,Here is my problem :%SYS-4-CHUNKSIBLINGSEXCEED: Number of siblings in a chunk has gone above the threshold. Threshold:10000 Sibling-Count:45558 Chunk:0x20EB71D0 Name:Elsinore TSIP P -Process= "GNSS Periodic Process", ipl= 0, pid= 92Ver...
Resolved! Downgrade rom version ASR1001-x
Hi , I'm trying to downgrade the rom for ASR1001-X from 16.3(2r) to 15.4(2r) .. but i get error ASR9#upgrade rom-monitor filename bootflash:asr1000-rommon.154-2r.S.pkg allPlatform is ASR. Verifying the code signature of the ROMMON package...Unsig...
Hi,I'm using an old Cisco 3750x as an aggregator switch for a number of other switches which are configured with an RSPAN vlan. The Cisco 3750x then has the uplink port connected to a passive network monitoring sensor which ingests all the SPAN traf...
I recently replaced a stack of switches with C9300s and encountered an interesting UDLD issue. After reviewing with seniors on my team, it seems it may have had something to do with the order of operations.Switches were uplinked via two 10G SR optics...
Hi,Trying to understand what this command is stopping exactly. I've looked through some documentation, but not understanding the purpose of it completely. Can someone give an explanation on what "no ip telnet comport enable" is disabling? And, if it ...
Hi Experts,Need your help one more time I am configuring EEM script for switches backup but i facing below errorsConfigured command - action 25.0 cli command "copy running-config ftp://CISCOSWITCH:Passwd@192.168.10.10/SWITCH/IN/$h/$h-$t abc.txt"Error...
I had an issues with CIsco 4506 generating an error like this below:Jan 16 17:06:02.888: %SFF8472-5-THRESHOLD_VIOLATION: Te1/3: Tx power high alarm; Operating value: 8.1 dBm, Threshold value: 3.4 dBm. So the above port is 10G port with sfp module ins...
Resolved! IP Source Guard
So, I am having some issue with configuring ip source guard. Here is the configuration results on SW:Switch(config-if)#do sh ip ver soInterface Filter-type Filter-mode IP-address Mac-address Vlan--------- ----------- ----------- --------------- -----...
Can someone help me figure this out? Unable to ssh from C9300 to a C1000 and it complains about hmac, kex and pretty much everything else. I am not clear on what I need to change, server/client on either to allow this to work? %SSH-3-NO_MATCH: No m...
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