Switching

EtherChannel across managed wireless radios

Interesting idea regarding EtherChannel (LAgP) Currently, we have a wireless link from site A to B with Cisco 3750's on either end. This link is also an 802.11 trunk with managed-VLAN wireless radios. We are looking at increasing our wireless redun...

Multicast: switch doesn't accept proper RP-discovery message

Hi all,We have a very strange problem on a C6500 running 12.2(33)SXH4We are using Auto-RP for Rendez-vous point distribution and this is working fine, only on one switch theRP-discovery packet is ignored. See message below from "debug ip pim auto-rp"...

Resolved! joining 3560 gi0/1 to etherchannel rejected

Hello guys, yesterday I had to add my old 3560 switch to my production again and connect it tr nk mode with 2960 switch. And due to the old 3560 ports are 10/100 only while 2960 is 10/100/1000 I thought about making portchannel involves the 3560 upli...

SPAN port(s) over VSL in 4500X and 5548

Hi all- I have a scenario where we have two bonded 4500X in the core and as well as two 5548 Nexus switches that are bonded as well. On both systems, I need to configure a SPAN. Can I do the span to a port that is not on the source switch? For ...

Resolved! Using mgmt interface Gi0/0 on 3850 switch with tacacs

I'm configuring a new 3850 switch. I've never used the Gi0/0 management interface before. I'd like to use on this switch because I don't really need to do any layer three stuff on the switching ports. I have logging, ntp and ssh working on Gi0/0 wi...

virtual router on a cat4500

Hi all, I need community feedback about carving a virtual router instance out of Cat4507r+e Sup7-e. Let me explain. I have a pair of said Cat4507 running as distribution switches. I need to add two new routers to terminate MPLS VPN connection. Curre...

ROUTER ID ELECTION IN OSPF

I have one router configured with ospf int fa0/0 172.16.1.1 255.255.255.0 and another int fa0/1 configured with eigrp 10 with 192.168.1.1 255.255.255.0. which will be router id in ospf domain.

Inter VLAN on multiple L3 switches

Dear Friends I have multi L3 switches in my network and i would like to perform intervlan routing on these switches only. I understand well how to perform this using one switch solely as gateway and other switches as L2 and perform routing but my co...

Smart Install help on a 3850

Hi all I have a 3850 that I have configured to be the director for smart install. It is also the TFTP and DHCP server. I plugged in a client C2960 switch and watched it receive the upgrade code and basic configuration template. Worked very nicely! H...

IOS Upgrade on Cisco 3650-48PD Switch Stack

Hello, we have 4 Cisco 3650-48PD switches in a stack and I've been tasked with upgrading the IOS on them over the weekend. What is the best way to go about this on switches in a stack? Do I have to copy the .bin file to each stacked switch or do I on...

Replacement Member Switch Won't Join 3850 Stack

Hi. I'm replacing a bad switch in our 3850 stack. It's switch 3 and as far as I can see has the correct software version but I get this error: V-Mismatch. New switch - Switch Ports Model SW Version SW Image Mode------ ----- ----- ---------- ----...

Resolved! ARP & MAC learning by Routers

Dear Experts, I have one doubt & need your support. If I have a network connection as shown below: PC-------SW#1------R1-----SW2-------Server PC:10.1.1.1/8 ; S:11.1.1.1/8 and PC wanna ping server then how will be the PING steps followed(behind the sc...

Resolved! mac-address-table aging-time and port security

Hi all, Appreciate your help on this. We recently had few issues with same MAC address learnt in 2 interfaces where port security is enabled. There are few things I would like to understand. 1. On a access switch WS-C3650-48PD when I execute show ma...