ping between Juniper router and Cisco switch doesn't work

m4rtinm4rtin Member Posts: 170
I have connected Juniper router and Cisco switch using straight-trough cable. Juniper router port configuration is following:
description 1000BASE-T;
unit 0 {
    family inet {
..and "show interfaces ge-1/2/0 terse" shows that interface is up:
Interface               Admin Link Proto    Local                 Remote
ge-1/2/0                up    up  
ge-1/2/0.0              up    up   inet
Cisco switch access port is configured like this:
interface GigabitEthernet6/5
 description VLAN99
 switchport access vlan 99
VLAN 99 is present in the switch. According to "show interfaces status", Gi6/5 seems to be up:
Gi6/5     VLAN99             connected    99         a-full a-1000 10/100/1000-TX
In addition, I have configured IP interface in switch, which is up as well:
Vlan99           YES manual up                    up
The problem is that I'm not able ping between router and switch. For example from Juniper:
> ping source count 4   
PING ( 56 data bytes

--- ping statistics ---
4 packets transmitted, 0 packets received, 100% packet loss
In switch I'm not able to see incoming MAC address on port Gi6/5. Route entry in router is present. Any ideas, what might be wrong here? If any additional information is needed, please ask icon_rolleyes.gif


  • IOS2JUNOSIOS2JUNOS Member Posts: 56 ■■□□□□□□□□
    what if you assign ip to switch port direct

    interface GigabitEthernet6/5
    no switchport
    ip address x.x.x.x

    and then try to ping ..does that work?
  • mkomonmkomon Member Posts: 37 ■■□□□□□□□□
    Can you post relevant parts of the config files? What types of Juniper/Cisco gear is it?

    So far my guess would be the cable, although the negotiated gig speed doesn't support my guess too much.
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