Hi netpro,when i type " show int trunk " i got this result. this is something wrong . Port Vlans in spanning tree forwarding state and not prunedGi1/1 noneGi2/1 1,10-11,20,22,30,40,50-51,60-61,70-71,80-84,90-94,100-102,110-113,120,...
hi every body while reading a book on switching i came across this line" 10 Gb blade for catayst 6509 support only 802.1q while the switch itself supports both 802.1q and isl"what is 10 Gb blade?i googled it but still not suredoes anybody know about ...
Hi AllI posted a question earlier on the "Getting started with LAN's" forum re: IPv6 Link Local & Site Local addresses which I don't want to cross post. However, just in case there are any IPv6 gurus here who do not post on the "Getting Started" foru...
hi every bodyi read in ccna book by wendom that isl and dot.1q have 12 bit vlan id and thus support same number of vlans.But then i read somewhere isl supports max 1000 vlans while 802.1q can support max 4096 vlans.which one is correct?thanks alot
Ok, I tried searching before posting, but I couldn't really narrow my search terms, so no luck.I have a couple of vlans 1,9,14 in relation to this issue. For some reason, vlan 9 all of a sudden, the clients are not receiving dhcp offers. The dhcp s...
Hi all,R5 is hub and R2 and R4 are spokes . i have to use ip pim autorp listner command on all the routers. R5 loopback is the the rp .The problem i am having is that when i ping from R2 to R4 igmp group 224.1.1.1 i get first two replies but rest tim...
I currently have a PTP T1 that has two 1720 's configured to use bridging. I would like to use ip routing instead of bridging. My 1720's have wic-t1 cards and use Kentrix, DataSmart 658's as DSU/CSU. When I enable ip routing on local 1720 I loose ...
Quick question from a networking newbie about best practices - if I have a number of 1U rack mounted servers, say 24 or 48, each with multiple Ethernet ports, e.g 4 - RJ45 ports for each of primary data, redundant data, console / management, KVM in t...
Whenever I try to configure my sub interface on my ethernet port with a IP ADDRESS I get the message below. I have tried several routers and all of them give me the same ERROR. 2620, 2610 and 2620 Configuring IP routing on a LAN subinterface is only ...
Hi Guys, We often feel the need to know the part number of a line card and we use the show diag command. To find out the exact part number of a device check out the below article. Its really a very useful tip. http://knowurtech.com/cisco/finding_part...
I'm new to networking so be patient.I have a 2811 router with two Fast Ethernet ports. I've setup inter-vlan routing with dot1q on fa 0/1. I've got a DSL router/modem that will be plugged into FA 0/0. The DSL modem/router is handing out 192.168.2....
I recently bought an 851 only to find out afterwards that it only supports 1 VLAN when I needed it to support at least 7. The documentation on VLAN support seemed pretty buried. Does anyone know if there is an easy way to find out how many VLANs each...
i have read that while configuring inter-vlan routing on a router subinterfaces must be created for each vlan. Its confusing me.For example in my case, i.evlan100 >> switch >>> rtr <<< switch << vlan 110so each switch's interface is directly attached...
