I am trying to determine whether to configure L2 or L3 between the core switch and the access closets. The core switches are 6509-E and the access closets have 3750x-48P-L switches (stacked). There are 5 switches on the second floor and 3 on the fi...
Dear friends,Does anybody know how the MD5 checksum is computed for VTPv1/VTPv2 in detail, i.e. what exact data is covered by the MD5 sum and how is it structured, how does the VTP password come in, etc.? I am currently creating some low-level tools ...
We have configured 2 5548s with vpc and we have nexus 2000s with topology of dual homed fabric extender. I can see the the ports for the nexus 2000s on both 5000s. When i change the port configuration for 2000s on first 5000 it applies. When i c...
Hi everybodyI'm working on Cisco 888w router, the problem is that this router load in rommon mode,I tried to use tftpdnld - set IP_ADDRESS, IP_SUBNET-MASK,... - but tftp server and router cannot ping eachother. then try xmodem to upload IOS. (I copy ...
Hi,I was requested to add a new switch on stack, after reviewing the config I noticed that the current stack does not have redundancy.I'd like to add the new switch to the stack but with full bandwidth and redundancy.I've read cisco's documentation a...
Hello,I need to troubleshoot the network where throughput is noticeably degraded through GRE tunnel.MTU 1500 and Speed 100mb/s on all physical links along the path.HOST1—L2SW—RTR2811—SW3560—RTR3725—FWLPIX—SW3750—HOST2 ...
Hi, Kind of a weird question but if someone can help me I appreciate it. Can I connect a 3560 receving two Internet links (but acting as L2)..... receiving both links on switchports and there's a router behind the 3560 which receives the L3 packets (...
Hi,i know the native vlan by default is vlan1but what does this command do switchpoirt trunk native vlan 5int fas0/5swtichport mode trunkswitport trunk native vlan 5does this mean anything connected to this port will get ip address in vlan 5 ? and wh...
Hi there,I'm studying for my CCIE R&S and I just need some clarrification regarding OSPF and EIGRP graceful restart.I just wanted to confirm that when the RFC and the Cisco docs say "restart", they are talking about the router doing a full reload as ...
Dear all,We have a Cisco ISR G2 2921 Router and a Redundant Power Supply RPS2300.We wanted to connect this router to the RPS.According to the document below in cisco.com, CAB-RPS2300 is the cable needed to connect any RPS supported devices other than...
Hello everyone. I have a question regarding monitoring, I´m looking for an appliance/software to be able to know what is going on with my network. I want to see statistics and graphics and be able to predict problems and analize a specific problem wh...
Hi Allwhen i try and run the following command between my PC and one of our servers i get the output belowping -l 1490 -f 192.168.0.1Packet needs to be fragmented but DF set.Packet needs to be fragmented but DF set.Packet needs to be fragmented but D...
I want to upgrade a 4500, it has a SupIV and 4 x FE modules.My question is: presumably it is only the SupIV that needs the upgrade and not the FE modules?
