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1500 questions
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0 answers

EVPN MAC Advertisement route not installed to L2 forwarding table

I have a VLAN-based EVPN connecting two sites in a lab environment based on the network topology described in the DAY ONE: USING ETHERNET VPNS FOR DATA CENTER INTERCONNECT book: For some reason, it looks like the MAC Advertisement routes from…
Martin
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1 answer

How does a Juniper PE associate frames from the CE with correct route in .l2vpn.0 table in case of Kompella L2 VPNs?

Let's say, that I have a following simple BGP-signaled L2VPN configuration: root@PE4> show configuration routing-instances vpn-b { instance-type l2vpn; interface ge-0/0/0.515; route-distinguisher 65512:200; vrf-target…
Martin
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6
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2 answers

BGP traffic management

I have a set-up of two AS's, each AS with two routers (BGP turned up with neighbouring between AS) communicating with each other. I also have specific networks inside the AS's in which I want to use a specific route/link to the other AS, say VOIP…
DevM
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6
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2 answers

OSPF manual neighbor configuration requirement on NBMA network

Why are OSPF neighbors manually configured on NBMA networks even when you enabled it with the broadcast keyword in frame map statements? Example is NBMA point-to-multipoint access. Thanks.
Jim
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6
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5 answers

Documenting Knowledge

I find a lot of people, as well as companies don't document their knowledge, or, do a poor job of it. I'd like to discuss what has been found to work well and not so well when it comes to doing this in the hope that we'll be able to assist one…
OzNetNerd
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6
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1 answer

Cisco IPSEC VPN fail Stage 2

The HUB is managed at a data center with external IP 200.200.200.200. There are 10 remote offices. Office 9 HUB 10.1.9.0 - 100.100.100.100 ->> VPN <<- 200.200.200.200 - 10.1.1.0 In office 9 only, after…
MartinC
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6
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2 answers

How do I know the switch is layer 2 or layer 3?

Is it possible to find the switch is Layer3 or Layer2 in (Switch)CLI? Is there any command to check whether the switch Layer(Layer 3 or 2) in CLI?
sparasan
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6
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2 answers

Undo last command(s) in case of losing connection to a Cisco Router

I would like to configure an interface on a remote Cisco router (ISR 4000 series) with IPsec. The only way to connect to it is through the interface that I am trying to encrypt. I want to ensure that I would not lose connection due to…
iokarag
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1 answer

Is it possible to stitch a L2VPN connection into a VPLS domain on Juniper MX

I'm trying to connect one end of a L2VPN tunnel to a VPLS instance on a Juniper MX router. The L2VPN should act like a local interface in the VPLS instance. Is this possible at all? I can't find any information about how this could be done.
Sebastian Wiesinger
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6
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1 answer

Sticky mac learning PC mac as vlan voice on Cisco 3750v2

I have port security configured as follows: switchport access vlan 196 switchport mode access switchport port-security switchport port-security aging time 3 switchport port-security violation restrict switchport port-security aging type…
jpnetsec
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6
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1 answer

Is SFP+ backwards compatible with SFP?

Can I stick an SFP transceiver module in a SFP+ port in a Cisco Nexus 5K for example if I need to connect a fast ethernet switch with a 1 Gbps SFP uplink port? I saw this Nexus's ports are 1/10 Gbps. Does it depend on a switch module or is there a…
Alex
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6
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1 answer

Odd stp issue on foundrys

I have 2 foundry devices running 802.1w which are both connected to an access switch which also runs 802.1w. The 2 foundry's are connected to each as well. I have the vlan configured on each of the devices to participate in spanning tree however…
Network Samurai
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6
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1 answer

Cisco + FreeRADIUS: Exec 15 level privilege mode

I have two routers: Cisco ISR 2921 with IOS version 15.0(1r)M9 and a Cisco C2600 which is an old guy with IOS 12.0(7)XK1. I have this set up on a FreeRADIUS server: router-admin MD5-Password := "" …
Alex
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1 answer

NX-OS 9.3: ECMP polarization and "ip load-sharing ... rotate"

This is a "why and how exactly does this work" question. The given problem is already solved. QUESTION: I'm interested to understand what "rotate" in ip load-sharing address source-destination port source-destination rotate actually…
Marc 'netztier' Luethi
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6
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2 answers

Do Wi-Fi clients interfere with each other?

I've read everywhere that wireless access points interfere with each other and should be put on distant channels. This even applies to access points on the same wired network with the same SSID from what I've read. Doesn't that imply that wireless…
The Phil Lee
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