Hello community,   How do I have to configure CDP on a trunk interface on an NCS540 with IOS-XR? I have added the command "cdp" under the phisical Interface, but it wasn't successful :( interface GigabitEthernet0/0/0/13 cdp speed 1000 negotiation auto ! interface GigabitEthernet0/0/0/13.12 l2transport encapsulation dot1q 12 rewrite ingress tag pop 1 symmetric ! interface GigabitEthernet0/0/0/13.13 l2transport encapsulation dot1q 13 rewrite ingress tag pop 1 symmetric !   Thanks for your feedback   ... View more

Hello Community We have multicast streams between the FW cluster (layer 3) and the N7706 (two Nodes), because of the BUG we Implemented an non redundant work ork arround (GRE Tunnel).   ::::: Topolgy :::::   N7706  ----------  N7706     |                          |     |                          |   FW                      FW     |                          |     |                          | N7706  ----------  N7706   The Cisco website says that this BUG will not be fixed, really??? How did you guys solve this problem? we have an additional cheallenge, dynamic routing on the FW is not allowed and the FW cannot trade mroutes. What else could I configure to work out a redundant solution? ... View more

My Topologie Looks like:   I have two N7706 and they speak HSRP with the FW,  additional I have PIM enabled for my Multicast Services. The two nexus have a static route towards the VIP of the FW.   The problem is now, that PIM is not HSRP aware and the RPF fails, because the next hop is not the PIM neighbor.   Nexus 7706 ------------------- FW   (active)  ------------------- Nexus 7706                          |              |                         |                  |                          |              |                         |                  |                    HSRP        VIP                    VIP            HSRP                          |              |                         |                  |                          |              |                         |                  | Nexus 7706 ------------------- FW   (standby)   ------------------ Nexus 7706   More info: The PIM joins towards Source/RP is sent only when there is a PIM neighbor learnt on the next hop. Explanation:      https://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/13783-hsrpmcast.html Bug:                 https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuy70860   The workaround with static mroute or dynamic routing between the N7706 and the FW is not very nice.   My question: I guess I am not the only one with that setup, so how did you guys fixed the issue? ... View more

Hi Folks I need your help. I’m struggling with an N7700 vrf redistribution between eBGP and OSPF. As you can see in the design, I have two N7700 PE Router which are running with MPLS, ISIS and MP-BGP, that’s working so far. Now I would like to interconnect both PE router with e.g. OSPF as redundancy. If I redistribute the eBGP learned route in the vrf V-2 on the PE Router 2, I can’t see them on the On the Node 1 where I would like to see the routes via OSPF, I just have en empty routeing table, but in the database I can see the network as Type-5 : OSPF Router with ID (10.255.211.173) (Process ID CCN VRF V-14) Router Link States (Area 0.0.0.0) Link ID ADV Router Age Seq# Checksum Link Count 10.255.211.173 10.255.211.173 118 0x80000041 0xe972 3 10.255.211.177 10.255.211.177 124 0x8000004a 0x3d13 3 Opaque Link Link States (Area 0.0.0.0) Link ID ADV Router Age Seq# Checksum Opaque ID 3.0.0.0 10.255.211.177 3 0x80000001 0x97cd 0 Type-5 AS External Link States Link ID ADV Router Age Seq# Checksum Tag 10.14.14.0 10.255.211.177 805 0x80000002 0x8de6 3489725528 10.14.15.0 10.255.211.177 805 0x80000002 0x82f0 3489725528 10.255.127.64 10.255.211.177 805 0x80000002 0x58b7 3489725528 10.255.254.10 10.255.211.177 805 0x80000002 0x7710 3489725528 10.255.254.11 10.255.211.177 805 0x80000002 0x6d19 3489725528 10.255.254.31 10.255.211.177 805 0x80000002 0xa4cd 3489725528 Thanks for your help ... View more

Hi I have a question regarding the hardware compatibility of the C6840-X-LE-40G. We would like to use the QSFP Ports as 4 x10G Ports, is it possible to use the   QSFP-4X10G-LR-S with that box? Many thanks for your feedback Adrian ... View more

Hi Community I have a lot of input, and unrecognized upper-level protocol error on one of my GigabitEthernet Interface. In the drop queue, I can see they are comming from the follwing queue: PARSE_DROP_IPV6_DISABLED . I don't have ipv6 enabled on that partical Interface, so why will that ipv6 traffic NOT discard? ! GigabitEthernet0/0/0/19 is up, line protocol is up Interface state transitions: 33 Hardware is GigabitEthernet, address is d46d.502b.004b (bia d46d.502b.004b) Description: SwissIX Peering Switch;M;NET;V-1;150216;bosshaad;Peering Switch SwissIX Equinix4 Internet address is 91.206.52.195/23 MTU 1514 bytes, BW 1000000 Kbit (Max: 1000000 Kbit) reliability 255/255, txload 146/255, rxload 3/255 Encapsulation ARPA, Full-duplex, 1000Mb/s, link type is force-up output flow control is off, input flow control is off loopback not set, ARP type ARPA, ARP timeout 00:10:00 Last input 00:00:00, output 00:00:00 Last clearing of "show interface" counters 05:24:46 5 minute input rate 15525000 bits/sec, 20408 packets/sec 5 minute output rate 573356000 bits/sec, 62546 packets/sec 412883756 packets input, 43777551634 bytes, 1097223 total input drops 2189 drops for unrecognized upper-level protocol Received 1398016 broadcast packets, 1106594 multicast packets 0 runts, 0 giants, 0 throttles, 0 parity 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 1358510576 packets output, 1568499475524 bytes, 2298 total output drops Output 0 broadcast packets, 0 multicast packets 0 output errors, 0 underruns, 0 applique, 0 resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions ! Thanks for your feedback ... View more

Hi I have a quick question. Actually we installed the brand new c6840-x as VSS and it works quit well. Now I’m wondering, on the older c65xx VSS we have, I can see on the SUP’s about their VSS status, I mean I can see which Chassis is active and which chassis stand-by. (green or amber Led) How do I check that on the new c6840-X Switches, I have not seen any led indication? Thanks for your help Cheers Adrian ... View more