Other Network Architecture Subjects

My Customer has an issue with high CPU running at 70% - 90% with IP input using the majority of the processor.I have analysed the network and there is nothing obvious as to why the CPU should be so high. The Cat4006 has a SupIII card. The customer ha...

Hi I am configuring OSPF on routed interfaces on a Catalyst 6500. The links in question are point to point links connected to routers. I am thinking that these should be manually configured as point-to-point links which will avoid the need for DR/BDR...

Hi, Following is the setup:- Node 3 | | Router 1--------Router 2 | | | | Switch 1--------Switch 2 | | | | Node 1 Node 2 Router 1 has Static routes to reach the Node 2 via Switch...

Here's a general question. If given the choice between standard high availability failover and a HSRP configuration on one 6509 with dual supervisor modules, which would you choose, and why?We are getting ready to replace our aged Sup 1s with Sup 2s...

I have a 1841 router with 2 sub interfaces, f0/1.1 and f0/1.2.This inteface goes to a switch and connects to vlan 1 and 2. The vlans can talk to each other fine. VLAN1 172.16.0.0/24 VLAN2 192.168.0.0/24.I have dotq encapsulation enabled on the interf...

We are switching from using a chassis based 6500 switch with an MSM to a stack with 2-WS3750G-12S-E, 2-WS-C3750G-48TS-S and some 2950's. We have about 12 vlan's and used a VTP domain. How do I set up the vlans on the 3750? Do I use virtual interfaces...

We are running Version 12.2(17d)SXB4 on 6509s.6509 is reporting config change alarms to snmp server, even if some show commands run e.g 'show run'( which is infact not a config change ).Can we tune SNMP config on 6509 so that it does not generate th...

I am trying to span one vlan using to differnet gig ports. One I configure the seconfd entry it clears the first command.I am using set span 200 2/8 both first and then I try set span 200 2/5 both.

I have six 6509's with redundant supervisor's running EIGRP in hybrid/dual router mode. They are connected in a ring configuration using single mode fiber, I am seeing an unusually high SRTT and multicast flow timers values between some of the msfc's...

Is it possible to police traffic (for example ftp traffic coming out from a ftp server)on Catalyst 3524XL series switches fastethernet interfaces?I found no police or traffic rate limiting command on IOS C3500XL-C3H2S-M Version 12.0(5.4)WC(1, the rel...

Very newbie question here, do VWIC-xMFT-T1's have built in CSU/DSUs?Also - is there a good resource that describes differences between multilink frame relay technology, and traditional frame relay technology? Such as are there differences in LMI sta...

I need to create some type of broadcast storm in my network to test some VOIP. Can anyone suggest me the best way to do that. We are on CAT65XX with SUP720 environment. Thanks.

Ok, I got a tougher one for you.Since we have upgraded from the CatOS to an IOS on our core switches, Catalyst 6509's, I am unable to restrict internet access using a third part server, which is running Internet Manager from Elron. I believe that I ...

On a Cat6500 giga and 10giga interfaces that are connected to Cat3750 we have a small amount of input errors, but NO CRC or other phisical errors.Then number of input errors os the same as the number of Input drops !Which could be the casue of those ...