Switching

We utilize OTV to extend L2 vlan's across two datacenters.Apparently any MAC address that starts w/ a '6' can't pass through OTV, even though the entries are in the OTV route tables.TAC reproduced this in their lab, and said this is probably a softwa...

We have a Cisco 3750 stack set up as layer 3 with mulitple VLANs and EIGRP and ip routing. Also connected to this stack are a SAN as well as downstream 2960s.  The 2960 are configured with the DG as the 3750 as are all devices and hosts on the networ...

Hi,In the document “configuring multicast services” about Catalyst 4500: www.cisco.com/en/US/docs/switches/lan/catalyst4000/7.5/configuration/guide/multi.html#wp1059370 …we can read this statement: “When a host wants to join an IP multicast group, it...

I have a 6509 router connected to a 3120 switch. The switch is running version 12.2(0.0951)se3 IOS and I was to upgrade to 12.2(55)se IOS. How do I upgrade and set up vlans on the switch.

Hi allwhen we use NBAR, does this show us what traffic we have on the network, but does it also automatically prioritise the traffic for you?and also how would you shape the traffic on a router ?cheers

Hi Experts,We have a server connected on 1Gig port with a traffic load of 900mb tx and 900mb rx. For business requirement we need to span rx and tx traffic to a destination of 1gig interface on same switch. Since total traffic is more than 1Gb, it is...

Hi,I have got a NAM module on my 65XX switches and since an IOS upgrade all the config has been removed.show mod X is OKsame issue on two differents switchesNormally the NAM recognise all the VLAn'sunder setup-monitor  (see the screen shot)but now no...

Hi All,Is it possible to change vty and enable password of Cisco l2 switches which are members of VTP domain? we have 90 l2 switches I want to change password of vty and enable password all switches from VTP server. or is there any other method that ...

I have a 871 router which I bought and configured on my home lan as an enthousiast a few years ago.. ever since I have not made many changes, but now I will be changing the network layout and want to upgrade the router OS to the latest version..I bou...

I am setting up a new 4510. this is the first cisco we have purchased. we have been a 3com shop until now. this switch is going to connect another building to our network. the 3com switches it connects to are all ports set to hybrid vlan 1 default (d...

Experienced an issue where multicast traffic was not being passed through a pair of redundant 6509's using EIGRP as the routing process.  Every port connecting from the source and destination had "ip pim sparse-dense mode" and used auto-rp as the rp ...

Hi All,Please I need help. I set my interfaces of our Cisco 2960 switches as follow:interface FastEthernet0/1 switchport mode access switchport voice vlan 60 mls qos trust dscp spanning-tree portfastVlan 1 as native vlan for data and vlan 60 for voic...