Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario descargar pdf (Pagina 384)

830

Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8

OL-10394-05 Rev. R0

S* 0.0.0.0/0 is directly connected, Ethernet1/0 S 192.168.0.0/16 [1/0] via 192.168.1.2

192.169.1.0/24 is variably subnetted, 2 subnets, 2 masks C 192.169.1.0/24 is directly

connected, Ethernet1/0 L 192.169.1.1/32 is directly connected, Ethernet1/0

and

Router#show ip route loop ->default:ipv4:base 192.168.0.0/16 -> base 192.168.1.2

static 00:01:07 N

In this case the route

S 192.168.0.0/16 [1/0] via 192.168.1.2

should be removed from the RIB.

Conditions: The default route MUST be present in order for the above behavior to be considered

wrong. If a default route is NOT present then the route

S 192.168.0.0/16 [1/0] via 192.168.1.2

is a misconfiguration and must be corrected by altering the configuration. Until the configuration is

corrected, the route will remain in the RIB and traffic covered by that route will be dropped.

Workaround: The one route loop can be removed from the RIB using the clear ip route" command:

clear ip route 192.168.0.0

Further Problem Description: In the absence of the default route removal of the one route loop can

lead to oscillation, which would seriously degrade the performance of the router.

• CSCsr11099

Symptoms: Ping fails on port-channel subinterface.

Conditions: Routers R1, R2 connected back to back and configured as shown below. When the active

link goes down or is shut, the hot standby becomes active. At this point a ping between the routers

fails.

The following conditions are necessary: - lacp fast-switchover is configured on the port-channel

interface - Either encapsulation dot1q or encapsulation isl is configured on the port-channel

subinterface - There is only one active link

Releases affected: Cisco IOS Release 12.2SRC

R1 R2 --- --- gi2/0/1 ------- gi2/0/1 gi2/0/2 ------- gi2/0/2

R1 config: interface Port-channel1 no ip address lacp fast-switchover lacp max-bundle

interface Port-channel1.1 encapsulation dot1Q 38 ip address 10.1.3.1 255.255.255.0

interface GigabitEthernet2/0/1 no ip address no mls qos trust channel-group 1 mode

active

interface GigabitEthernet2/0/2 no ip address no mls qos trust channel-group 1 mode

active

R2 config: interface Port-channel1 no ip address lacp fast-switchover lacp max-bundle

interface Port-channel1.1 encapsulation dot1Q 38 ip address 10.1.3.2 255.255.255.0

interface GigabitEthernet2/0/1 no ip address no mls qos trust channel-group 1 mode

active

interface GigabitEthernet2/0/2 no ip address no mls qos trust channel-group 1 mode

active

Workaround: Do not configure lacp fast-switchover.

Further Problem Description: This occurs because the encapsulation assigned to the new active link

is set to the default "native" rather than the encapsulation configured on the port-channel

subinterface. Therefore, this will cause connectivity issues even with non-routed port-channel

subinterfaces.

• CSCsr13399

Symptoms: Topology:

Router PPPoE/PPPoA <----> 7301.

1 2 ... 379 380 381 382 383 384 385 386 387 388 389 ... 397 398

Comentarios a estos manuales

Sin comentarios

Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario Pagina 384

Comentarios a estos manuales

Relacionado con productos y manuales para Redes Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch