About onurcoskun

onurcoskun · 12-25-2008

Hi, I have a 7606 router running with the IOS 12.2(33) Advservices WAN. The issue is that I can't create a bvi or a bridge group. The supported protocols for STP are ibm, dec and vlan-bridge. ieee is also missing.Under a serial interface, I can't ent...

onurcoskun · 06-02-2008

Hi all,I have two 3750s, one is connected to the radius server (ACS), and the other is connected to clients. There's a trunk connection between the two switches. By the way, radius works fine. However my problem is that the switch that is connected ...

onurcoskun · 04-19-2008

Hi all,I have been trying to implement a scenario in which vlan hopping is performed. From a packet generator I created a packet with the added 802.1q tags. The inner tag was the native vlan, and the outer was the destination vlan.The problem is that...

onurcoskun · 11-01-2007

Whwn trunking between a 7600 and an alcatel router, my management vlan is not functioning properly? Could it be due to the mtu of tagged packets?Thanks in advance.

onurcoskun · 10-17-2007

With routing protocols such as rip, igrp etc, why is it necessary to prevent route table update timers from synchronizing by introducing a random jitter time? Is it due to less bandwith consuption?Thanks in advance,

onurcoskun · 11-24-2008

By default cisco switch ports use Ethernet autonegotiation to determine duplex and speed settings.Cisco switches detect the speed setting by using the Fast Link Pulses which is part of the autonegotiation process. However if the speed is manually ent...

onurcoskun · 04-21-2008

I think the IOS on the 3750 do now allow double tagged frames on an access port.http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_25_se/configuration/guide/swint.html#wp1107751Below is what the link says about tagged fra...

onurcoskun · 04-19-2008

Also, is there a means to enable 802.1q double tagging on an access link?

onurcoskun · 10-10-2007

Also when providing redundancy with rip for example there are 2 links to the same route, the primary is an ethernet link with a metric of 1 and the secondary is a serial link with a metric of 3. When the router first hears the secondary link update, ...

onurcoskun · 10-08-2007

By default a switch operates in pvst+ using 802.1d stp. Therefore rstp cannot be used until a different spanning tree mode (mst or rpvst+) is enabled.Also pay attention to the fact that rstp is an underlying mechanism that mst or pvst+ can use.If you...

Member Since	‎05-03-2007 09:10 AM
Date Last Visited	‎08-18-2017 03:56 AM
Posts	18
Total Helpful Votes Received	5

User Statistics

User Activity

enabling irb on a 7606 router

radius communication

VLAN Hopping

cisco alcatel

Update timer synchronization

Re: Autonegotiating speed and duplex

Re: VLAN Hopping

Re: VLAN Hopping

Re: Split Horizon and Holddown Timer

Re: Which spanning tree to use?