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- About smehrnia
09-28-2018
smehrnia
Member since
11-12-2003
Rising star
10-25-2013
01:08 PM
Hi Experts, I have a question regarding a TengigE interface. i have this interface on a CRS-1 that has three Subif. all of the sub-interfaces are working without any problems, counters show no drops n basically all good. but when i run "show int" for the top-level interface, i can see a huge amount of "Input Drops". is that normal or should i dig for a design flaw or an issue with the interface? Thanks guys
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07-11-2013
10:58 AM
Hi Experts, Quick question, if i want to do NAT exception for ALL ip traffic on an interface in version 8.4(2). what should i do? just want to double check it... would it work or should i use another method: nat (interface,any) source static any any Thanks, Soroush.
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07-10-2013
05:20 PM
Hi, since there is nothing NAT specific in the old ios configuration. i guess its safe to go by the any any config. its just the nat-control and a bunch of nat (vlanX) 0 access-list ... config. thats all thanks for ur elaboration Jouni. Soroush.
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07-10-2013
05:01 PM
So, what you basically mean is that while in the older version it needed the above configuration to allow Any traffic to flow freely (without NAT) between the interfaces, in version 8.3+ its not necessary to add anything, just leave it as is and it would work just fine! did I get it right?
Thanks for the info again!
Soroush.
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07-10-2013
04:39 PM
thank you for ur reply, i got the concept of modular configuration and object network but im not sure how to use it for this any any situation... is this nat (vlan12,any) source static any any r eally an option? that could help! there are public addresses behind the interfaces, so it actually is not doing NAT. i've been asked to migrate the exact same config to 8.4 and the more i read on Cisco.com the more i get confused. how about the nat-control command, should i do something about it or just forget it since its deprecated? thanks again, Soroush.
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07-10-2013
04:04 PM
Hi guys, I have to change an old NAT config into the 8.4(2) version. i read Cisco migration Docs n everything but still im kind of confused. it'd be nice if someone can help me with this example: OLD Config: nat-control ! nat (vlan12) 0 access-list No_Nat ! access-list No_Nat extended permit ip any any access-list allowany extended permit ip any any ! ! access-group allowany in interface outside Thanx a milion... Soroush.
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09-19-2012
12:00 AM
Hi peter, thanks for the reply. it is a big private Co. network, we dont use an ISP in the path. i had in mind to classify the ospf traffic at my head points then give it an amount of priority bandwidth on the interface, thats it. do you think it will help? Soroush.
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09-18-2012
11:28 PM
Hello Experts, we have a GRE Tunnel in our setup and the two head/end routers form an OSPF neighborship over this tunnel. at the times of traffic congestion we lose hello packets and it causes OSPF peering problems, flapping. i want to prioritize my OSPF traffic on the link to overcome this problem. I thought of a little piece of QoS, but since it is on a production network, i want to know ur opinion and help if u could. Thanks in advance. Soroush.
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- Tags:
- gre_tunnel
- ospf
- qos
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08-30-2012
12:20 AM
Hi, as long as your access switchport is a member of the VLAN 20 in this case, with proper OSPF config, there should be no problems. Hope it Helps, Soroush.
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08-27-2012
07:39 PM
Thats exactly right sarah, my bad, i mixed up the Alternate port between sw3 and sw2 ! tc is for when port starts forwarding. because sw2 still knows the root is alive and well, upon receiving inferior bpdu from sw3, it immediately sends a BPDU to sw3 that contains information about the root bridge. sw3 does not send its own BPDUs and accepts the port that leads to sw2 as the new root port. Hope it Helps, Soroush.
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08-27-2012
11:44 AM
hi, Thank you Giuseppe, and it is on a service provider environment. Soroush.
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08-26-2012
11:20 PM
I believe the 1 - 4094 is just the extended vlan numbering available on enhanced images, not the actual valid vlan count. one could find out supported vlan count with show vlan status command. on L3 switches its 1005, on low ends 250. the 4096 IDB enteries include the support for both HWIDB and SWIDB, so its not solely for holding SVI info HTH, Soroush.
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08-26-2012
08:25 PM
next, sw3 puts the designated port into forwarding state, sends out bpdu with the topology change (tc) bit set to the neighboring switch sw2. sw2 then flushes its MAC table entries and starts the TC timer, sends out bpdu with TC bit out all its designated and root port. it happenes through out the entire network and rapidly everyone know abt the topology change, network converges with the new topology. Hope it Helps, Soroush.
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08-26-2012
02:37 PM
hi Julio, jcarvaja wrote: Hello Sara, 1) In 802.1W the Alternate port and the Backup port are the equals to the blocked port on the 802.1D, you only expect BPDU's on a alternate port, you do not send. if it is correct, should i send out a suggestion to Cisco website to correct below line in the link u sent here? "A blocked port receives a more useful BPDU than the one it SENDS out on its segment." Soroush.
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08-26-2012
01:17 PM
Hi, 1) in 802.1D after the network converges and Root is selected, only the root bridge sends out BPDUs, it changed in RSTP, every switch sends its own BPDU, but sends it appropriately.. to downstream switches as far as i know. 2) Edge ports are basically those ports configured with the PORTFAST feature, its set by the admin. 3) nothing happenes to the edge port. only the port connected to the new link becomes new ROOT PORT and f1/2 goes into block (back up) state. as long as there is no bpdu received in the edge port, it maintains its status. Hope it Helps, Soroush.
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10-25-2013 01:08 PM
Hi Experts, I have a question regarding a TengigE interface. i have this
interface on a CRS-1 that h...
07-11-2013 10:58 AM
Hi Experts,Quick question, if i want to do NAT exception for ALL ip
traffic on an interface in versi...
07-10-2013 05:20 PM
Hi,since there is nothing NAT specific in the old ios configuration. i
guess its safe to go by the a...
07-10-2013 05:01 PM
So, what you basically mean is that while in the older version it needed
the above configuration to ...
07-10-2013 04:39 PM
thank you for ur reply, i got the concept of modular configuration and
object network but im not sur...
07-10-2013 04:04 PM
Hi guys,I have to change an old NAT config into the 8.4(2) version. i
read Cisco migration Docs n ev...
09-19-2012 12:00 AM
Hi peter, thanks for the reply.it is a big private Co. network, we dont
use an ISP in the path.i had...
09-18-2012 11:28 PM
Hello Experts,we have a GRE Tunnel in our setup and the two head/end
routers form an OSPF neighborsh...
08-30-2012 12:20 AM
Hi,as long as your access switchport is a member of the VLAN 20 in this
case, with proper OSPF confi...
08-27-2012 07:39 PM
Thats exactly right sarah, my bad, i mixed up the Alternate port between
sw3 and sw2 ! tc is for whe...
08-26-2012 11:20 PM
I believe the 1 - 4094 is just the extended vlan numbering available on
enhanced images, not the act...
08-26-2012 08:25 PM
next, sw3 puts the designated port into forwarding state, sends out bpdu
with the topology change (t...
08-26-2012 02:37 PM
hi Julio,jcarvaja wrote:Hello Sara,1) In 802.1W the Alternate port and
the Backup port are the equal...
Public Statistics
| Date Registered | 11-12-2003 05:15 PM |
| Date Last Visited | 09-28-2018 12:06 AM |
| Total Messages Posted | 439 |
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