Switching

Any ideas what causes:%PM-SP-4-BAD_COOKIE: bad cookie magic was detected The error message decoder states:This message indicates that the port manager detected an invalid request. [char] is the invalid request.But, no real answer on what to do about ...

Dear Friends,I am trying to configure a 2921 router with two number of ASA 5515 (both firewall is in Failover bundle) Firewall with Portchannel bundle.Router | Gig0/1 -----> Eth 0 for ASA -1 (Portchannel 2)          | Gig0/2 ------> Eth 0 for ASA -2 ...

HiI have  two devices directly connected. Between these two devices I am setting up a IPSEC tunnel.Below is my config on the router. Can someone help me on this ? Thanks in advance Prashant R

Dear AllImage is Attached.Access Switch 2960 --->Core Switch 3750----> SonicWall 4500----->ACCESS Switch(vlan 1)Access switch with vlan 90 is directly connected to gig0/12 (routed port of 3750) and FA0 of 3750 is connected to Firewall X3(192.168.80.1...

Hi Everyone,Can anyone help please??I have 3 vlans setup (VLAN 10 - Management, VLAN 20 - Internal, VLAN 30 - Guests) on my 891 Router to do DHCP and NAT... After configuring my access lists to prevent the guest VLAN 30 from accessing anything on VLA...

I have three switches connected in a full mesh.  I have two distribution switches that are sharing the root bridge roles for numerous instances of RPVST+.  Today I noticed that "spanning-tree guard root" is configured on several of my P2P links and a...

Hi! I wonder, is there any module for stacking two Nexus 5548UP switches together?

I am trying to understand native vlan and trunkingI have a server on with a trunk port with VLAN 10,11,12,20. I need to have VLAN 10 untagged, the rest of the VLANs taggedWhich Is this correct?A)switchport trunk encapsulation dot1qswitchport mode tru...

Hi allwe have switch 3560 , running interface vlan , and apply route-map on interfaces vlan . but traffic slowly between interface vlan . i try apply "ip route-cache policy " . but it not workinterface Vlan15ip address 10.0.113.33 255.255.255.224ip r...

Hi,I tried to lab L2TPv3 in GNS. Everything was looking good and it appears my tunnel comes for a brief second but, then goes down and I never could ping from one side to the other. Is this a shortcoming of GNS? As far as I know it doesn't support La...

I have a server that needs to be setup with a trunk port with VLAN 12,14,15,20. It also needs an untagged VLAN 10Which config is correctA)Switch# switchport trunk encapsulation dot1qSwitch# switchport mode dynamic desirableSwitch# switchport trunk na...

Dear Firends,I need help with HSRP with NAT. I have problem in some situations.See attached image for example.Situations:1° If interface Gi0/0 is down, then the HSRP changes to router 2, but Gi 0/1 continues in router 1. When the packet leaves networ...